diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/libsrtp/src/crypto/cipher | |
| parent | Initial commit. (diff) | |
| download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libsrtp/src/crypto/cipher')
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes.c | 2167 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_gcm_mbedtls.c | 412 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_gcm_nss.c | 442 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_gcm_ossl.c | 428 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_icm.c | 433 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_icm_mbedtls.c | 371 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_icm_nss.c | 404 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/aes_icm_ossl.c | 383 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/cipher.c | 664 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/cipher_test_cases.c | 365 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/cipher_test_cases.h | 53 | ||||
| -rw-r--r-- | third_party/libsrtp/src/crypto/cipher/null_cipher.c | 153 |
12 files changed, 6275 insertions, 0 deletions
diff --git a/third_party/libsrtp/src/crypto/cipher/aes.c b/third_party/libsrtp/src/crypto/cipher/aes.c new file mode 100644 index 0000000000..a2060c53e8 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes.c @@ -0,0 +1,2167 @@ +/* + * aes.c + * + * An implemnetation of the AES block cipher. + * + * David A. McGrew + * Cisco Systems, Inc. + */ + +/* + * + * Copyright (c) 2001-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "aes.h" +#include "err.h" + +/* + * we use the tables T0, T1, T2, T3, and T4 to compute AES, and + * the tables U0, U1, U2, and U4 to compute its inverse + * + * different tables are used on little-endian (Intel, VMS) and + * big-endian processors (everything else) + * + * these tables are computed using the program tables/aes_tables; use + * this program to generate different tables for porting or + * optimization on a different platform + */ + +#ifndef WORDS_BIGENDIAN +/* clang-format off */ +static const uint32_t T0[256] = { + 0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, + 0xdf2f2ff, 0xbd6b6bd6, 0xb16f6fde, 0x54c5c591, + 0x50303060, 0x3010102, 0xa96767ce, 0x7d2b2b56, + 0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec, + 0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, + 0x15fafaef, 0xeb5959b2, 0xc947478e, 0xbf0f0fb, + 0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, + 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b, + 0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c, + 0x5a36366c, 0x413f3f7e, 0x2f7f7f5, 0x4fcccc83, + 0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x8f1f1f9, + 0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a, + 0xc040408, 0x52c7c795, 0x65232346, 0x5ec3c39d, + 0x28181830, 0xa1969637, 0xf05050a, 0xb59a9a2f, + 0x907070e, 0x36121224, 0x9b80801b, 0x3de2e2df, + 0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, + 0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, + 0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b, + 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, + 0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413, + 0xf55353a6, 0x68d1d1b9, 0x0, 0x2cededc1, + 0x60202040, 0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6, + 0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, + 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85, + 0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, + 0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, + 0xcf45458a, 0x10f9f9e9, 0x6020204, 0x817f7ffe, + 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b, + 0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05, + 0xad92923f, 0xbc9d9d21, 0x48383870, 0x4f5f5f1, + 0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142, + 0x30101020, 0x1affffe5, 0xef3f3fd, 0x6dd2d2bf, + 0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3, + 0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, + 0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, + 0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6, + 0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, + 0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b, + 0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, + 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad, + 0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, + 0xdb494992, 0xa06060c, 0x6c242448, 0xe45c5cb8, + 0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, + 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, + 0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda, + 0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, + 0xb46c6cd8, 0xfa5656ac, 0x7f4f4f3, 0x25eaeacf, + 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810, + 0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c, + 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697, + 0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e, + 0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, + 0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, + 0xd8484890, 0x5030306, 0x1f6f6f7, 0x120e0e1c, + 0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, + 0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27, + 0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, + 0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433, + 0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, + 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5, + 0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, + 0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0, + 0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e, + 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t T1[256] = { + 0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, + 0xf2f2ff0d, 0x6b6bd6bd, 0x6f6fdeb1, 0xc5c59154, + 0x30306050, 0x1010203, 0x6767cea9, 0x2b2b567d, + 0xfefee719, 0xd7d7b562, 0xabab4de6, 0x7676ec9a, + 0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87, + 0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b, + 0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, + 0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b, + 0xb7b775c2, 0xfdfde11c, 0x93933dae, 0x26264c6a, + 0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, + 0x3434685c, 0xa5a551f4, 0xe5e5d134, 0xf1f1f908, + 0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f, + 0x404080c, 0xc7c79552, 0x23234665, 0xc3c39d5e, + 0x18183028, 0x969637a1, 0x5050a0f, 0x9a9a2fb5, + 0x7070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d, + 0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, + 0x909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e, + 0x1b1b362d, 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb, + 0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, + 0x2929527b, 0xe3e3dd3e, 0x2f2f5e71, 0x84841397, + 0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, + 0x20204060, 0xfcfce31f, 0xb1b179c8, 0x5b5bb6ed, + 0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b, + 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a, + 0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, + 0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, + 0x45458acf, 0xf9f9e910, 0x2020406, 0x7f7ffe81, + 0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3, + 0x5151a2f3, 0xa3a35dfe, 0x404080c0, 0x8f8f058a, + 0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104, + 0xbcbc63df, 0xb6b677c1, 0xdadaaf75, 0x21214263, + 0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, + 0xcdcd814c, 0xc0c1814, 0x13132635, 0xececc32f, + 0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, + 0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, + 0x6464c8ac, 0x5d5dbae7, 0x1919322b, 0x7373e695, + 0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f, + 0x22224466, 0x2a2a547e, 0x90903bab, 0x88880b83, + 0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, + 0xdedea779, 0x5e5ebce2, 0xb0b161d, 0xdbdbad76, + 0xe0e0db3b, 0x32326456, 0x3a3a744e, 0xa0a141e, + 0x494992db, 0x6060c0a, 0x2424486c, 0x5c5cb8e4, + 0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6, + 0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, + 0xe7e7d532, 0xc8c88b43, 0x37376e59, 0x6d6ddab7, + 0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, + 0x6c6cd8b4, 0x5656acfa, 0xf4f4f307, 0xeaeacf25, + 0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x8081018, + 0xbaba6fd5, 0x7878f088, 0x25254a6f, 0x2e2e5c72, + 0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751, + 0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21, + 0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, + 0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa, + 0x484890d8, 0x3030605, 0xf6f6f701, 0xe0e1c12, + 0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0, + 0x86861791, 0xc1c19958, 0x1d1d3a27, 0x9e9e27b9, + 0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233, + 0x6969d2bb, 0xd9d9a970, 0x8e8e0789, 0x949433a7, + 0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, + 0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a, + 0x8c8c038f, 0xa1a159f8, 0x89890980, 0xd0d1a17, + 0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8, + 0x414182c3, 0x999929b0, 0x2d2d5a77, 0xf0f1e11, + 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t T2[256] = { + 0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, + 0xf2ff0df2, 0x6bd6bd6b, 0x6fdeb16f, 0xc59154c5, + 0x30605030, 0x1020301, 0x67cea967, 0x2b567d2b, + 0xfee719fe, 0xd7b562d7, 0xab4de6ab, 0x76ec9a76, + 0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d, + 0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0, + 0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, + 0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0, + 0xb775c2b7, 0xfde11cfd, 0x933dae93, 0x264c6a26, + 0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, + 0x34685c34, 0xa551f4a5, 0xe5d134e5, 0xf1f908f1, + 0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15, + 0x4080c04, 0xc79552c7, 0x23466523, 0xc39d5ec3, + 0x18302818, 0x9637a196, 0x50a0f05, 0x9a2fb59a, + 0x70e0907, 0x12243612, 0x801b9b80, 0xe2df3de2, + 0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, + 0x9121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a, + 0x1b362d1b, 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0, + 0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, + 0x29527b29, 0xe3dd3ee3, 0x2f5e712f, 0x84139784, + 0x53a6f553, 0xd1b968d1, 0x0, 0xedc12ced, + 0x20406020, 0xfce31ffc, 0xb179c8b1, 0x5bb6ed5b, + 0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39, + 0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf, + 0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, + 0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, + 0x458acf45, 0xf9e910f9, 0x2040602, 0x7ffe817f, + 0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8, + 0x51a2f351, 0xa35dfea3, 0x4080c040, 0x8f058a8f, + 0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5, + 0xbc63dfbc, 0xb677c1b6, 0xdaaf75da, 0x21426321, + 0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, + 0xcd814ccd, 0xc18140c, 0x13263513, 0xecc32fec, + 0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, + 0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d, + 0x64c8ac64, 0x5dbae75d, 0x19322b19, 0x73e69573, + 0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc, + 0x22446622, 0x2a547e2a, 0x903bab90, 0x880b8388, + 0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, + 0xdea779de, 0x5ebce25e, 0xb161d0b, 0xdbad76db, + 0xe0db3be0, 0x32645632, 0x3a744e3a, 0xa141e0a, + 0x4992db49, 0x60c0a06, 0x24486c24, 0x5cb8e45c, + 0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662, + 0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, + 0xe7d532e7, 0xc88b43c8, 0x376e5937, 0x6ddab76d, + 0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, + 0x6cd8b46c, 0x56acfa56, 0xf4f307f4, 0xeacf25ea, + 0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x8101808, + 0xba6fd5ba, 0x78f08878, 0x254a6f25, 0x2e5c722e, + 0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6, + 0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f, + 0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, + 0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66, + 0x4890d848, 0x3060503, 0xf6f701f6, 0xe1c120e, + 0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9, + 0x86179186, 0xc19958c1, 0x1d3a271d, 0x9e27b99e, + 0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311, + 0x69d2bb69, 0xd9a970d9, 0x8e07898e, 0x9433a794, + 0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, + 0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf, + 0x8c038f8c, 0xa159f8a1, 0x89098089, 0xd1a170d, + 0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868, + 0x4182c341, 0x9929b099, 0x2d5a772d, 0xf1e110f, + 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t T3[256] = { + 0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, + 0xff0df2f2, 0xd6bd6b6b, 0xdeb16f6f, 0x9154c5c5, + 0x60503030, 0x2030101, 0xcea96767, 0x567d2b2b, + 0xe719fefe, 0xb562d7d7, 0x4de6abab, 0xec9a7676, + 0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, + 0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0, + 0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, + 0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0, + 0x75c2b7b7, 0xe11cfdfd, 0x3dae9393, 0x4c6a2626, + 0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc, + 0x685c3434, 0x51f4a5a5, 0xd134e5e5, 0xf908f1f1, + 0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515, + 0x80c0404, 0x9552c7c7, 0x46652323, 0x9d5ec3c3, + 0x30281818, 0x37a19696, 0xa0f0505, 0x2fb59a9a, + 0xe090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2, + 0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, + 0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a, + 0x362d1b1b, 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0, + 0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, + 0x527b2929, 0xdd3ee3e3, 0x5e712f2f, 0x13978484, + 0xa6f55353, 0xb968d1d1, 0x0, 0xc12ceded, + 0x40602020, 0xe31ffcfc, 0x79c8b1b1, 0xb6ed5b5b, + 0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939, + 0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf, + 0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, + 0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, + 0x8acf4545, 0xe910f9f9, 0x4060202, 0xfe817f7f, + 0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8, + 0xa2f35151, 0x5dfea3a3, 0x80c04040, 0x58a8f8f, + 0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5, + 0x63dfbcbc, 0x77c1b6b6, 0xaf75dada, 0x42632121, + 0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, + 0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec, + 0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, + 0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, + 0xc8ac6464, 0xbae75d5d, 0x322b1919, 0xe6957373, + 0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc, + 0x44662222, 0x547e2a2a, 0x3bab9090, 0xb838888, + 0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, + 0xa779dede, 0xbce25e5e, 0x161d0b0b, 0xad76dbdb, + 0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, + 0x92db4949, 0xc0a0606, 0x486c2424, 0xb8e45c5c, + 0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262, + 0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, + 0xd532e7e7, 0x8b43c8c8, 0x6e593737, 0xdab76d6d, + 0x18c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, + 0xd8b46c6c, 0xacfa5656, 0xf307f4f4, 0xcf25eaea, + 0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808, + 0x6fd5baba, 0xf0887878, 0x4a6f2525, 0x5c722e2e, + 0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, + 0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f, + 0x96dd4b4b, 0x61dcbdbd, 0xd868b8b, 0xf858a8a, + 0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666, + 0x90d84848, 0x6050303, 0xf701f6f6, 0x1c120e0e, + 0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9, + 0x17918686, 0x9958c1c1, 0x3a271d1d, 0x27b99e9e, + 0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111, + 0xd2bb6969, 0xa970d9d9, 0x7898e8e, 0x33a79494, + 0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, + 0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf, + 0x38f8c8c, 0x59f8a1a1, 0x9808989, 0x1a170d0d, + 0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868, + 0x82c34141, 0x29b09999, 0x5a772d2d, 0x1e110f0f, + 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U0[256] = { + 0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, + 0xcb6bab3b, 0xf1459d1f, 0xab58faac, 0x9303e34b, + 0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5, + 0xfcd7e54f, 0xd7cb2ac5, 0x80443526, 0x8fa362b5, + 0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d, + 0x2752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b, + 0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295, + 0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e, + 0x6a89c275, 0x78798ef4, 0x6b3e5899, 0xdd71b927, + 0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, + 0x184adf63, 0x82311ae5, 0x60335197, 0x457f5362, + 0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9, + 0x58684870, 0x19fd458f, 0x876cde94, 0xb7f87b52, + 0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, + 0x728ebb2, 0x3c2b52f, 0x9a7bc586, 0xa50837d3, + 0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, + 0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e, + 0xcdf4da65, 0xd5be0506, 0x1f6234d1, 0x8afea6c4, + 0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, + 0x39ec830b, 0xaaef6040, 0x69f715e, 0x51106ebd, + 0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, + 0xb58d5491, 0x55dc471, 0x6fd40604, 0xff155060, + 0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967, + 0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879, + 0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x0, + 0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, + 0xfbff0efd, 0x5638850f, 0x1ed5ae3d, 0x27392d36, + 0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624, + 0xb1670a0c, 0xfe75793, 0xd296eeb4, 0x9e919b1b, + 0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c, + 0xaba93e2, 0xe52aa0c0, 0x43e0223c, 0x1d171b12, + 0xb0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, + 0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3, + 0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, + 0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, + 0xcadc31d7, 0x10856342, 0x40229713, 0x2011c684, + 0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7, + 0x4b2f9e1d, 0xf330b2dc, 0xec52860d, 0xd0e3c177, + 0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, + 0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, 0xef903322, + 0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, + 0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f, + 0xe49d3a2c, 0xd927850, 0x9bcc5f6a, 0x62467e54, + 0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, + 0xbe805d9f, 0x7c93d069, 0xa92dd56f, 0xb31225cf, + 0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, + 0x97826cd, 0xf418596e, 0x1b79aec, 0xa89a4f83, + 0x656e95e6, 0x7ee6ffaa, 0x8cfbc21, 0xe6e815ef, + 0xd99be7ba, 0xce366f4a, 0xd4099fea, 0xd67cb029, + 0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235, + 0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733, + 0x4a9804f1, 0xf7daec41, 0xe50cd7f, 0x2ff69117, + 0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4, + 0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1, 0x7f516546, + 0x4ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb, + 0x5a1d67b3, 0x52d2db92, 0x335610e9, 0x1347d66d, + 0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb, + 0xee27a9ce, 0x35c961b7, 0xede51ce1, 0x3cb1477a, + 0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, + 0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478, + 0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, + 0x72c31d16, 0xc25e2bc, 0x8b493c28, 0x41950dff, + 0x7101a839, 0xdeb30c08, 0x9ce4b4d8, 0x90c15664, + 0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U1[256] = { + 0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, + 0x6bab3bcb, 0x459d1ff1, 0x58faacab, 0x3e34b93, + 0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525, + 0xd7e54ffc, 0xcb2ac5d7, 0x44352680, 0xa362b58f, + 0x5ab1de49, 0x1bba2567, 0xeea4598, 0xc0fe5de1, + 0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6, + 0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da, + 0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44, + 0x89c2756a, 0x798ef478, 0x3e58996b, 0x71b927dd, + 0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4, + 0x4adf6318, 0x311ae582, 0x33519760, 0x7f536245, + 0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994, + 0x68487058, 0xfd458f19, 0x6cde9487, 0xf87b52b7, + 0xd373ab23, 0x24b72e2, 0x8f1fe357, 0xab55662a, + 0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x837d3a5, + 0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, + 0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1, + 0xf4da65cd, 0xbe0506d5, 0x6234d11f, 0xfea6c48a, + 0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, + 0xec830b39, 0xef6040aa, 0x9f715e06, 0x106ebd51, + 0x8a213ef9, 0x6dd963d, 0x53eddae, 0xbde64d46, + 0x8d5491b5, 0x5dc47105, 0xd406046f, 0x155060ff, + 0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777, + 0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db, + 0xa7ca147, 0xf427ce9, 0x1e84f8c9, 0x0, + 0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, + 0xff0efdfb, 0x38850f56, 0xd5ae3d1e, 0x392d3627, + 0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a, + 0x670a0cb1, 0xe757930f, 0x96eeb4d2, 0x919b1b9e, + 0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16, + 0xba93e20a, 0x2aa0c0e5, 0xe0223c43, 0x171b121d, + 0xd090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, + 0x19f15785, 0x775af4c, 0xdd99eebb, 0x607fa3fd, + 0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, + 0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863, + 0xdc31d7ca, 0x85634210, 0x22971340, 0x11c68420, + 0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, + 0x2f9e1d4b, 0x30b2dcf3, 0x52860dec, 0xe3c177d0, + 0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, + 0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8, 0x903322ef, + 0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0xbd49836, + 0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4, + 0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462, + 0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, + 0x805d9fbe, 0x93d0697c, 0x2dd56fa9, 0x1225cfb3, + 0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, + 0x7826cd09, 0x18596ef4, 0xb79aec01, 0x9a4f83a8, + 0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6, + 0x9be7bad9, 0x366f4ace, 0x99fead4, 0x7cb029d6, + 0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0, + 0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315, + 0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f, + 0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x496e4df, + 0xb5d19ee3, 0x886a4c1b, 0x1f2cc1b8, 0x5165467f, + 0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e, + 0x1d67b35a, 0xd2db9252, 0x5610e933, 0x47d66d13, + 0x61d79a8c, 0xca1377a, 0x14f8598e, 0x3c13eb89, + 0x27a9ceee, 0xc961b735, 0xe51ce1ed, 0xb1477a3c, + 0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, + 0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886, + 0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, + 0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41, + 0x1a83971, 0xb30c08de, 0xe4b4d89c, 0xc1566490, + 0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U2[256] = { + 0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, + 0xab3bcb6b, 0x9d1ff145, 0xfaacab58, 0xe34b9303, + 0x302055fa, 0x76adf66d, 0xcc889176, 0x2f5254c, + 0xe54ffcd7, 0x2ac5d7cb, 0x35268044, 0x62b58fa3, + 0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0, + 0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9, + 0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59, + 0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8, + 0xc2756a89, 0x8ef47879, 0x58996b3e, 0xb927dd71, + 0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a, + 0xdf63184a, 0x1ae58231, 0x51976033, 0x5362457f, + 0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x8f9942b, + 0x48705868, 0x458f19fd, 0xde94876c, 0x7b52b7f8, + 0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, + 0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508, + 0x2830f287, 0xbf23b2a5, 0x302ba6a, 0x16ed5c82, + 0xcf8a2b1c, 0x79a792b4, 0x7f3f0f2, 0x694ea1e2, + 0xda65cdf4, 0x506d5be, 0x34d11f62, 0xa6c48afe, + 0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, + 0x830b39ec, 0x6040aaef, 0x715e069f, 0x6ebd5110, + 0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, + 0x5491b58d, 0xc471055d, 0x6046fd4, 0x5060ff15, + 0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e, + 0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee, + 0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x0, + 0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, + 0xefdfbff, 0x850f5638, 0xae3d1ed5, 0x2d362739, + 0xf0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e, + 0xa0cb167, 0x57930fe7, 0xeeb4d296, 0x9b1b9e91, + 0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a, + 0x93e20aba, 0xa0c0e52a, 0x223c43e0, 0x1b121d17, + 0x90e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, + 0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60, + 0x1f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, + 0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, + 0x31d7cadc, 0x63421085, 0x97134022, 0xc6842011, + 0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1, + 0x9e1d4b2f, 0xb2dcf330, 0x860dec52, 0xc177d0e3, + 0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, + 0xfca8c48c, 0xf0a01a3f, 0x7d56d82c, 0x3322ef90, + 0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, + 0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf, + 0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246, + 0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, + 0x5d9fbe80, 0xd0697c93, 0xd56fa92d, 0x25cfb312, + 0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, + 0x26cd0978, 0x596ef418, 0x9aec01b7, 0x4f83a89a, + 0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8, + 0xe7bad99b, 0x6f4ace36, 0x9fead409, 0xb029d67c, + 0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066, + 0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8, + 0x4f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6, + 0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04, + 0xd19ee3b5, 0x6a4c1b88, 0x2cc1b81f, 0x65467f51, + 0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0xbfb2e41, + 0x67b35a1d, 0xdb9252d2, 0x10e93356, 0xd66d1347, + 0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c, + 0xa9ceee27, 0x61b735c9, 0x1ce1ede5, 0x477a3cb1, + 0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, + 0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db, + 0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, + 0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0xdff4195, + 0xa8397101, 0xc08deb3, 0xb4d89ce4, 0x566490c1, + 0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U3[256] = { + 0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, + 0x3bcb6bab, 0x1ff1459d, 0xacab58fa, 0x4b9303e3, + 0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02, + 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435, 0xb58fa362, + 0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe, + 0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3, + 0x3e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952, + 0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9, + 0x756a89c2, 0xf478798e, 0x996b3e58, 0x27dd71b9, + 0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace, + 0x63184adf, 0xe582311a, 0x97603351, 0x62457f53, + 0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08, + 0x70586848, 0x8f19fd45, 0x94876cde, 0x52b7f87b, + 0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, + 0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837, + 0x30f28728, 0x23b2a5bf, 0x2ba6a03, 0xed5c8216, + 0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269, + 0x65cdf4da, 0x6d5be05, 0xd11f6234, 0xc48afea6, + 0x349d532e, 0xa2a055f3, 0x532e18a, 0xa475ebf6, + 0xb39ec83, 0x40aaef60, 0x5e069f71, 0xbd51106e, + 0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, + 0x91b58d54, 0x71055dc4, 0x46fd406, 0x60ff1550, + 0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9, + 0xb0bd42e8, 0x7888b89, 0xe7385b19, 0x79dbeec8, + 0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x0, + 0x9838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, + 0xfdfbff0e, 0xf563885, 0x3d1ed5ae, 0x3627392d, + 0xa64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36, + 0xcb1670a, 0x930fe757, 0xb4d296ee, 0x1b9e919b, + 0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12, + 0xe20aba93, 0xc0e52aa0, 0x3c43e022, 0x121d171b, + 0xe0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, + 0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f, + 0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, + 0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4, + 0xd7cadc31, 0x42108563, 0x13402297, 0x842011c6, + 0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129, + 0x1d4b2f9e, 0xdcf330b2, 0xdec5286, 0x77d0e3c1, + 0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, + 0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d, 0x22ef9033, + 0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, + 0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad, + 0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e, + 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, + 0x9fbe805d, 0x697c93d0, 0x6fa92dd5, 0xcfb31225, + 0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, + 0xcd097826, 0x6ef41859, 0xec01b79a, 0x83a89a4f, + 0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815, + 0xbad99be7, 0x4ace366f, 0xead4099f, 0x29d67cb0, + 0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2, + 0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7, + 0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691, + 0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496, + 0x9ee3b5d1, 0x4c1b886a, 0xc1b81f2c, 0x467f5165, + 0x9d04ea5e, 0x15d358c, 0xfa737487, 0xfb2e410b, + 0xb35a1d67, 0x9252d2db, 0xe9335610, 0x6d1347d6, + 0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13, + 0xceee27a9, 0xb735c961, 0xe1ede51c, 0x7a3cb147, + 0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, + 0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44, + 0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, + 0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d, + 0x397101a8, 0x8deb30c, 0xd89ce4b4, 0x6490c156, + 0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8, +}; +/* clang-format on */ + +#else /* assume big endian */ +/* clang-format off */ +static const uint32_t T0[256] = { + 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, + 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, + 0x60303050, 0x2010103, 0xce6767a9, 0x562b2b7d, + 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, + 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, + 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, + 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, + 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, + 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, + 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, + 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, + 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, + 0x804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, + 0x30181828, 0x379696a1, 0xa05050f, 0x2f9a9ab5, + 0xe070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, + 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, + 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, + 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, + 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, + 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, + 0xa65353f5, 0xb9d1d168, 0x0, 0xc1eded2c, + 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, + 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, + 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, + 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, + 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, + 0x8a4545cf, 0xe9f9f910, 0x4020206, 0xfe7f7f81, + 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, + 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x58f8f8a, + 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, + 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, + 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, + 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, + 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, + 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, + 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, + 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, + 0x44222266, 0x542a2a7e, 0x3b9090ab, 0xb888883, + 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, + 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, + 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, + 0x924949db, 0xc06060a, 0x4824246c, 0xb85c5ce4, + 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, + 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, + 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, + 0x18d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, + 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, + 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, + 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, + 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, + 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, + 0x964b4bdd, 0x61bdbddc, 0xd8b8b86, 0xf8a8a85, + 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, + 0x904848d8, 0x6030305, 0xf7f6f601, 0x1c0e0e12, + 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, + 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, + 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, + 0xd26969bb, 0xa9d9d970, 0x78e8e89, 0x339494a7, + 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, + 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, + 0x38c8c8f, 0x59a1a1f8, 0x9898980, 0x1a0d0d17, + 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, + 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, + 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t T1[256] = { + 0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, + 0xdfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, + 0x50603030, 0x3020101, 0xa9ce6767, 0x7d562b2b, + 0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, + 0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, + 0x15effafa, 0xebb25959, 0xc98e4747, 0xbfbf0f0, + 0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, + 0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, + 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, + 0x5a6c3636, 0x417e3f3f, 0x2f5f7f7, 0x4f83cccc, + 0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x8f9f1f1, + 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, + 0xc080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, + 0x28301818, 0xa1379696, 0xf0a0505, 0xb52f9a9a, + 0x90e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, + 0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, + 0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, + 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, + 0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, + 0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, + 0xf5a65353, 0x68b9d1d1, 0x0, 0x2cc1eded, + 0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, + 0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, + 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, + 0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, + 0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, + 0xcf8a4545, 0x10e9f9f9, 0x6040202, 0x81fe7f7f, + 0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, + 0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, + 0xad3f9292, 0xbc219d9d, 0x48703838, 0x4f1f5f5, + 0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, + 0x30201010, 0x1ae5ffff, 0xefdf3f3, 0x6dbfd2d2, + 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, + 0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, + 0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, + 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, + 0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, + 0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, + 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, + 0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, + 0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, + 0xdb924949, 0xa0c0606, 0x6c482424, 0xe4b85c5c, + 0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, + 0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, + 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, + 0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, + 0xb4d86c6c, 0xfaac5656, 0x7f3f4f4, 0x25cfeaea, + 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, + 0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, + 0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, + 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, + 0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, + 0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, + 0xd8904848, 0x5060303, 0x1f7f6f6, 0x121c0e0e, + 0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, + 0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, + 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, + 0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, + 0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, + 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, + 0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, + 0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, + 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, + 0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t T2[256] = { + 0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, + 0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, + 0x30506030, 0x1030201, 0x67a9ce67, 0x2b7d562b, + 0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, + 0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, + 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, + 0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, + 0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, + 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, + 0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, + 0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, + 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, + 0x40c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, + 0x18283018, 0x96a13796, 0x50f0a05, 0x9ab52f9a, + 0x7090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, + 0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, + 0x91b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, + 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, + 0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, + 0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, + 0x53f5a653, 0xd168b9d1, 0x0, 0xed2cc1ed, + 0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, + 0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, + 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, + 0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, + 0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, + 0x45cf8a45, 0xf910e9f9, 0x2060402, 0x7f81fe7f, + 0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, + 0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, + 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, + 0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, + 0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, + 0xcd4c81cd, 0xc14180c, 0x13352613, 0xec2fc3ec, + 0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, + 0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, + 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, + 0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, + 0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, + 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, + 0xde79a7de, 0x5ee2bc5e, 0xb1d160b, 0xdb76addb, + 0xe03bdbe0, 0x32566432, 0x3a4e743a, 0xa1e140a, + 0x49db9249, 0x60a0c06, 0x246c4824, 0x5ce4b85c, + 0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, + 0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, + 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, + 0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, + 0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, + 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x8181008, + 0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, + 0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, + 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, + 0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, + 0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, + 0x48d89048, 0x3050603, 0xf601f7f6, 0xe121c0e, + 0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, + 0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, + 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, + 0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, + 0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, + 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, + 0x8c8f038c, 0xa1f859a1, 0x89800989, 0xd171a0d, + 0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, + 0x41c38241, 0x99b02999, 0x2d775a2d, 0xf111e0f, + 0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t T3[256] = { + 0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, + 0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, + 0x30305060, 0x1010302, 0x6767a9ce, 0x2b2b7d56, + 0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, + 0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, + 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, + 0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, + 0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, + 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, + 0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, + 0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, + 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, + 0x4040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, + 0x18182830, 0x9696a137, 0x5050f0a, 0x9a9ab52f, + 0x707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, + 0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, + 0x9091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, + 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, + 0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, + 0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, + 0x5353f5a6, 0xd1d168b9, 0x0, 0xeded2cc1, + 0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, + 0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, + 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, + 0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, + 0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, + 0x4545cf8a, 0xf9f910e9, 0x2020604, 0x7f7f81fe, + 0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, + 0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, + 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, + 0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, + 0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, + 0xcdcd4c81, 0xc0c1418, 0x13133526, 0xecec2fc3, + 0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, + 0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, + 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, + 0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, + 0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, + 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, + 0xdede79a7, 0x5e5ee2bc, 0xb0b1d16, 0xdbdb76ad, + 0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0xa0a1e14, + 0x4949db92, 0x6060a0c, 0x24246c48, 0x5c5ce4b8, + 0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, + 0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, + 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, + 0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, + 0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, + 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x8081810, + 0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, + 0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, + 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, + 0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, + 0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, + 0x4848d890, 0x3030506, 0xf6f601f7, 0xe0e121c, + 0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, + 0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, + 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, + 0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, + 0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, + 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, + 0x8c8c8f03, 0xa1a1f859, 0x89898009, 0xd0d171a, + 0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, + 0x4141c382, 0x9999b029, 0x2d2d775a, 0xf0f111e, + 0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U0[256] = { + 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, + 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, + 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, + 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, + 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, + 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, + 0x38f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, + 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, + 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, + 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, + 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, + 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, + 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, + 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, + 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, + 0x302887f2, 0x23bfa5b2, 0x2036aba, 0xed16825c, + 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, + 0x65daf4cd, 0x605bed5, 0xd134621f, 0xc4a6fe8a, + 0x342e539d, 0xa2f355a0, 0x58ae132, 0xa4f6eb75, + 0xb83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, + 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, + 0x91548db5, 0x71c45d05, 0x406d46f, 0x605015ff, + 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, + 0xb0e842bd, 0x7898b88, 0xe7195b38, 0x79c8eedb, + 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x0, + 0x9808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, + 0xfd0efffb, 0xf853856, 0x3daed51e, 0x362d3927, + 0xa0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, + 0xc0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, + 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, + 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, + 0xe090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, + 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, + 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, + 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, + 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, + 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, + 0x1d9e2f4b, 0xdcb230f3, 0xd8652ec, 0x77c1e3d0, + 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, + 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, + 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, + 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, + 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, + 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, + 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, + 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, + 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, + 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, + 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, + 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, + 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, + 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, + 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, + 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, + 0x9d5eea04, 0x18c355d, 0xfa877473, 0xfb0b412e, + 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, + 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, + 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, + 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, + 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, + 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, + 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, + 0x39a80171, 0x80cb3de, 0xd8b4e49c, 0x6456c190, + 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U1[256] = { + 0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, + 0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, + 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, + 0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, + 0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, + 0x2c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, + 0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, + 0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, + 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, + 0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, + 0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, + 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, + 0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, + 0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, + 0x7b2eb28, 0x32fb5c2, 0x9a86c57b, 0xa5d33708, + 0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, + 0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, + 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, + 0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, + 0x390b83ec, 0xaa4060ef, 0x65e719f, 0x51bd6e10, + 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, + 0xb591548d, 0x571c45d, 0x6f0406d4, 0xff605015, + 0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, + 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, + 0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x0, + 0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, + 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, + 0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, + 0xb10c0a67, 0xf9357e7, 0xd2b4ee96, 0x9e1b9b91, + 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, + 0xae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, + 0xb0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, + 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, + 0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, + 0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, + 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, + 0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, + 0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, + 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, + 0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, + 0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, + 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, + 0xe42c3a9d, 0xd507892, 0x9b6a5fcc, 0x62547e46, + 0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, + 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, + 0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, + 0x9cd2678, 0xf46e5918, 0x1ec9ab7, 0xa8834f9a, + 0x65e6956e, 0x7eaaffe6, 0x821bccf, 0xe6ef15e8, + 0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, + 0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, + 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, + 0x4af10498, 0xf741ecda, 0xe7fcd50, 0x2f1791f6, + 0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, + 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, + 0x49d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, + 0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, + 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, + 0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, + 0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, + 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, + 0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, + 0x72161dc3, 0xcbce225, 0x8b283c49, 0x41ff0d95, + 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, + 0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U2[256] = { + 0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, + 0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x3934be3, + 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, + 0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, + 0x5a49deb1, 0x1b6725ba, 0xe9845ea, 0xc0e15dfe, + 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, + 0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, + 0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, + 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, + 0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, + 0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, + 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, + 0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, + 0xd323ab73, 0x2e2724b, 0x8f57e31f, 0xab2a6655, + 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x8a5d337, + 0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, + 0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, + 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, + 0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, + 0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, + 0x8af93e21, 0x63d96dd, 0x5aedd3e, 0xbd464de6, + 0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, + 0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, + 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, + 0xa47a17c, 0xfe97c42, 0x1ec9f884, 0x0, + 0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, + 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, + 0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, + 0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, + 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, + 0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, + 0xd0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, + 0x198557f1, 0x74caf75, 0xddbbee99, 0x60fda37f, + 0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, + 0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, + 0xdccad731, 0x85104263, 0x22401397, 0x112084c6, + 0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, + 0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, + 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, + 0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, + 0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0xb3698d4, + 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, + 0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, + 0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, + 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, + 0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, + 0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, + 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, + 0x9bd9bae7, 0x36ce4a6f, 0x9d4ea9f, 0x7cd629b0, + 0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, + 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, + 0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, + 0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x4dfe496, + 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, + 0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, + 0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, + 0x618c9ad7, 0xc7a37a1, 0x148e59f8, 0x3c89eb13, + 0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, + 0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, + 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, + 0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, + 0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, + 0x17139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, + 0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U3[256] = { + 0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, + 0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, + 0x30fa5520, 0x766df6ad, 0xcc769188, 0x24c25f5, + 0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, + 0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, + 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, + 0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, + 0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, + 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, + 0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, + 0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, + 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x82b94f9, + 0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, + 0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, + 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, + 0x2887f230, 0xbfa5b223, 0x36aba02, 0x16825ced, + 0xcf1c2b8a, 0x79b492a7, 0x7f2f0f3, 0x69e2a14e, + 0xdaf4cd65, 0x5bed506, 0x34621fd1, 0xa6fe8ac4, + 0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, + 0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, + 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, + 0x548db591, 0xc45d0571, 0x6d46f04, 0x5015ff60, + 0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, + 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, + 0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x0, + 0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, + 0xefffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, + 0xfd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, + 0xa67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, + 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, + 0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, + 0x90d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, + 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, + 0x1269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, + 0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, + 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, + 0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, + 0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, + 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, + 0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, + 0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, + 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, + 0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, + 0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, + 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, + 0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, + 0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, + 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, + 0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, + 0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, + 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, + 0x4984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, + 0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, + 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, + 0x5eea049d, 0x8c355d01, 0x877473fa, 0xb412efb, + 0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, + 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, + 0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, + 0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, + 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, + 0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, + 0x1dc37216, 0xe2250cbc, 0x3c498b28, 0xd9541ff, + 0xa8017139, 0xcb3de08, 0xb4e49cd8, 0x56c19064, + 0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0 +}; +/* clang-format on */ +#endif + +/* + * the following tables (aes_sbox, aes_inv_sbox, T4, U4) are + * endian-neutral + */ +/* clang-format off */ +static const uint8_t aes_sbox[256] = { + 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, + 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, + 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, + 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, + 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, + 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, + 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, + 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, + 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, + 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, + 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, + 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, + 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, + 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, + 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, + 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, + 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, + 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, + 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, + 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, + 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, + 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, + 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, + 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, + 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, + 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, + 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, + 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 +}; +/* clang-format on */ + +#ifndef CPU_RISC +/* clang-format off */ +static const uint8_t aes_inv_sbox[256] = { + 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, + 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, + 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, + 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, + 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, + 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, + 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, + 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, + 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, + 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, + 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, + 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, + 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, + 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, + 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, + 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, + 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, + 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, + 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, + 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, + 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, + 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, + 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, + 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, + 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, + 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, + 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, + 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, + 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, + 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, + 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, + 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d +}; +/* clang-format on */ +#endif /* ! CPU_RISC */ + +#ifdef CPU_RISC +/* clang-format off */ +static const uint32_t T4[256] = { + 0x63636363, 0x7c7c7c7c, 0x77777777, 0x7b7b7b7b, + 0xf2f2f2f2, 0x6b6b6b6b, 0x6f6f6f6f, 0xc5c5c5c5, + 0x30303030, 0x01010101, 0x67676767, 0x2b2b2b2b, + 0xfefefefe, 0xd7d7d7d7, 0xabababab, 0x76767676, + 0xcacacaca, 0x82828282, 0xc9c9c9c9, 0x7d7d7d7d, + 0xfafafafa, 0x59595959, 0x47474747, 0xf0f0f0f0, + 0xadadadad, 0xd4d4d4d4, 0xa2a2a2a2, 0xafafafaf, + 0x9c9c9c9c, 0xa4a4a4a4, 0x72727272, 0xc0c0c0c0, + 0xb7b7b7b7, 0xfdfdfdfd, 0x93939393, 0x26262626, + 0x36363636, 0x3f3f3f3f, 0xf7f7f7f7, 0xcccccccc, + 0x34343434, 0xa5a5a5a5, 0xe5e5e5e5, 0xf1f1f1f1, + 0x71717171, 0xd8d8d8d8, 0x31313131, 0x15151515, + 0x04040404, 0xc7c7c7c7, 0x23232323, 0xc3c3c3c3, + 0x18181818, 0x96969696, 0x05050505, 0x9a9a9a9a, + 0x07070707, 0x12121212, 0x80808080, 0xe2e2e2e2, + 0xebebebeb, 0x27272727, 0xb2b2b2b2, 0x75757575, + 0x09090909, 0x83838383, 0x2c2c2c2c, 0x1a1a1a1a, + 0x1b1b1b1b, 0x6e6e6e6e, 0x5a5a5a5a, 0xa0a0a0a0, + 0x52525252, 0x3b3b3b3b, 0xd6d6d6d6, 0xb3b3b3b3, + 0x29292929, 0xe3e3e3e3, 0x2f2f2f2f, 0x84848484, + 0x53535353, 0xd1d1d1d1, 0x00000000, 0xedededed, + 0x20202020, 0xfcfcfcfc, 0xb1b1b1b1, 0x5b5b5b5b, + 0x6a6a6a6a, 0xcbcbcbcb, 0xbebebebe, 0x39393939, + 0x4a4a4a4a, 0x4c4c4c4c, 0x58585858, 0xcfcfcfcf, + 0xd0d0d0d0, 0xefefefef, 0xaaaaaaaa, 0xfbfbfbfb, + 0x43434343, 0x4d4d4d4d, 0x33333333, 0x85858585, + 0x45454545, 0xf9f9f9f9, 0x02020202, 0x7f7f7f7f, + 0x50505050, 0x3c3c3c3c, 0x9f9f9f9f, 0xa8a8a8a8, + 0x51515151, 0xa3a3a3a3, 0x40404040, 0x8f8f8f8f, + 0x92929292, 0x9d9d9d9d, 0x38383838, 0xf5f5f5f5, + 0xbcbcbcbc, 0xb6b6b6b6, 0xdadadada, 0x21212121, + 0x10101010, 0xffffffff, 0xf3f3f3f3, 0xd2d2d2d2, + 0xcdcdcdcd, 0x0c0c0c0c, 0x13131313, 0xecececec, + 0x5f5f5f5f, 0x97979797, 0x44444444, 0x17171717, + 0xc4c4c4c4, 0xa7a7a7a7, 0x7e7e7e7e, 0x3d3d3d3d, + 0x64646464, 0x5d5d5d5d, 0x19191919, 0x73737373, + 0x60606060, 0x81818181, 0x4f4f4f4f, 0xdcdcdcdc, + 0x22222222, 0x2a2a2a2a, 0x90909090, 0x88888888, + 0x46464646, 0xeeeeeeee, 0xb8b8b8b8, 0x14141414, + 0xdededede, 0x5e5e5e5e, 0x0b0b0b0b, 0xdbdbdbdb, + 0xe0e0e0e0, 0x32323232, 0x3a3a3a3a, 0x0a0a0a0a, + 0x49494949, 0x06060606, 0x24242424, 0x5c5c5c5c, + 0xc2c2c2c2, 0xd3d3d3d3, 0xacacacac, 0x62626262, + 0x91919191, 0x95959595, 0xe4e4e4e4, 0x79797979, + 0xe7e7e7e7, 0xc8c8c8c8, 0x37373737, 0x6d6d6d6d, + 0x8d8d8d8d, 0xd5d5d5d5, 0x4e4e4e4e, 0xa9a9a9a9, + 0x6c6c6c6c, 0x56565656, 0xf4f4f4f4, 0xeaeaeaea, + 0x65656565, 0x7a7a7a7a, 0xaeaeaeae, 0x08080808, + 0xbabababa, 0x78787878, 0x25252525, 0x2e2e2e2e, + 0x1c1c1c1c, 0xa6a6a6a6, 0xb4b4b4b4, 0xc6c6c6c6, + 0xe8e8e8e8, 0xdddddddd, 0x74747474, 0x1f1f1f1f, + 0x4b4b4b4b, 0xbdbdbdbd, 0x8b8b8b8b, 0x8a8a8a8a, + 0x70707070, 0x3e3e3e3e, 0xb5b5b5b5, 0x66666666, + 0x48484848, 0x03030303, 0xf6f6f6f6, 0x0e0e0e0e, + 0x61616161, 0x35353535, 0x57575757, 0xb9b9b9b9, + 0x86868686, 0xc1c1c1c1, 0x1d1d1d1d, 0x9e9e9e9e, + 0xe1e1e1e1, 0xf8f8f8f8, 0x98989898, 0x11111111, + 0x69696969, 0xd9d9d9d9, 0x8e8e8e8e, 0x94949494, + 0x9b9b9b9b, 0x1e1e1e1e, 0x87878787, 0xe9e9e9e9, + 0xcececece, 0x55555555, 0x28282828, 0xdfdfdfdf, + 0x8c8c8c8c, 0xa1a1a1a1, 0x89898989, 0x0d0d0d0d, + 0xbfbfbfbf, 0xe6e6e6e6, 0x42424242, 0x68686868, + 0x41414141, 0x99999999, 0x2d2d2d2d, 0x0f0f0f0f, + 0xb0b0b0b0, 0x54545454, 0xbbbbbbbb, 0x16161616 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint32_t U4[256] = { + 0x52525252, 0x9090909, 0x6a6a6a6a, 0xd5d5d5d5, + 0x30303030, 0x36363636, 0xa5a5a5a5, 0x38383838, + 0xbfbfbfbf, 0x40404040, 0xa3a3a3a3, 0x9e9e9e9e, + 0x81818181, 0xf3f3f3f3, 0xd7d7d7d7, 0xfbfbfbfb, + 0x7c7c7c7c, 0xe3e3e3e3, 0x39393939, 0x82828282, + 0x9b9b9b9b, 0x2f2f2f2f, 0xffffffff, 0x87878787, + 0x34343434, 0x8e8e8e8e, 0x43434343, 0x44444444, + 0xc4c4c4c4, 0xdededede, 0xe9e9e9e9, 0xcbcbcbcb, + 0x54545454, 0x7b7b7b7b, 0x94949494, 0x32323232, + 0xa6a6a6a6, 0xc2c2c2c2, 0x23232323, 0x3d3d3d3d, + 0xeeeeeeee, 0x4c4c4c4c, 0x95959595, 0xb0b0b0b, + 0x42424242, 0xfafafafa, 0xc3c3c3c3, 0x4e4e4e4e, + 0x8080808, 0x2e2e2e2e, 0xa1a1a1a1, 0x66666666, + 0x28282828, 0xd9d9d9d9, 0x24242424, 0xb2b2b2b2, + 0x76767676, 0x5b5b5b5b, 0xa2a2a2a2, 0x49494949, + 0x6d6d6d6d, 0x8b8b8b8b, 0xd1d1d1d1, 0x25252525, + 0x72727272, 0xf8f8f8f8, 0xf6f6f6f6, 0x64646464, + 0x86868686, 0x68686868, 0x98989898, 0x16161616, + 0xd4d4d4d4, 0xa4a4a4a4, 0x5c5c5c5c, 0xcccccccc, + 0x5d5d5d5d, 0x65656565, 0xb6b6b6b6, 0x92929292, + 0x6c6c6c6c, 0x70707070, 0x48484848, 0x50505050, + 0xfdfdfdfd, 0xedededed, 0xb9b9b9b9, 0xdadadada, + 0x5e5e5e5e, 0x15151515, 0x46464646, 0x57575757, + 0xa7a7a7a7, 0x8d8d8d8d, 0x9d9d9d9d, 0x84848484, + 0x90909090, 0xd8d8d8d8, 0xabababab, 0x0, + 0x8c8c8c8c, 0xbcbcbcbc, 0xd3d3d3d3, 0xa0a0a0a, + 0xf7f7f7f7, 0xe4e4e4e4, 0x58585858, 0x5050505, + 0xb8b8b8b8, 0xb3b3b3b3, 0x45454545, 0x6060606, + 0xd0d0d0d0, 0x2c2c2c2c, 0x1e1e1e1e, 0x8f8f8f8f, + 0xcacacaca, 0x3f3f3f3f, 0xf0f0f0f, 0x2020202, + 0xc1c1c1c1, 0xafafafaf, 0xbdbdbdbd, 0x3030303, + 0x1010101, 0x13131313, 0x8a8a8a8a, 0x6b6b6b6b, + 0x3a3a3a3a, 0x91919191, 0x11111111, 0x41414141, + 0x4f4f4f4f, 0x67676767, 0xdcdcdcdc, 0xeaeaeaea, + 0x97979797, 0xf2f2f2f2, 0xcfcfcfcf, 0xcececece, + 0xf0f0f0f0, 0xb4b4b4b4, 0xe6e6e6e6, 0x73737373, + 0x96969696, 0xacacacac, 0x74747474, 0x22222222, + 0xe7e7e7e7, 0xadadadad, 0x35353535, 0x85858585, + 0xe2e2e2e2, 0xf9f9f9f9, 0x37373737, 0xe8e8e8e8, + 0x1c1c1c1c, 0x75757575, 0xdfdfdfdf, 0x6e6e6e6e, + 0x47474747, 0xf1f1f1f1, 0x1a1a1a1a, 0x71717171, + 0x1d1d1d1d, 0x29292929, 0xc5c5c5c5, 0x89898989, + 0x6f6f6f6f, 0xb7b7b7b7, 0x62626262, 0xe0e0e0e, + 0xaaaaaaaa, 0x18181818, 0xbebebebe, 0x1b1b1b1b, + 0xfcfcfcfc, 0x56565656, 0x3e3e3e3e, 0x4b4b4b4b, + 0xc6c6c6c6, 0xd2d2d2d2, 0x79797979, 0x20202020, + 0x9a9a9a9a, 0xdbdbdbdb, 0xc0c0c0c0, 0xfefefefe, + 0x78787878, 0xcdcdcdcd, 0x5a5a5a5a, 0xf4f4f4f4, + 0x1f1f1f1f, 0xdddddddd, 0xa8a8a8a8, 0x33333333, + 0x88888888, 0x7070707, 0xc7c7c7c7, 0x31313131, + 0xb1b1b1b1, 0x12121212, 0x10101010, 0x59595959, + 0x27272727, 0x80808080, 0xecececec, 0x5f5f5f5f, + 0x60606060, 0x51515151, 0x7f7f7f7f, 0xa9a9a9a9, + 0x19191919, 0xb5b5b5b5, 0x4a4a4a4a, 0xd0d0d0d, + 0x2d2d2d2d, 0xe5e5e5e5, 0x7a7a7a7a, 0x9f9f9f9f, + 0x93939393, 0xc9c9c9c9, 0x9c9c9c9c, 0xefefefef, + 0xa0a0a0a0, 0xe0e0e0e0, 0x3b3b3b3b, 0x4d4d4d4d, + 0xaeaeaeae, 0x2a2a2a2a, 0xf5f5f5f5, 0xb0b0b0b0, + 0xc8c8c8c8, 0xebebebeb, 0xbbbbbbbb, 0x3c3c3c3c, + 0x83838383, 0x53535353, 0x99999999, 0x61616161, + 0x17171717, 0x2b2b2b2b, 0x4040404, 0x7e7e7e7e, + 0xbabababa, 0x77777777, 0xd6d6d6d6, 0x26262626, + 0xe1e1e1e1, 0x69696969, 0x14141414, 0x63636363, + 0x55555555, 0x21212121, 0xc0c0c0c, 0x7d7d7d7d +}; +/* clang-format on */ +#endif /* CPU_RISC */ + +#define gf2_8_field_polynomial 0x1B +/* + * gf2_8_shift(z) returns the result of the GF(2^8) 'multiply by x' + * operation, using the field representation from AES; that is, the + * next gf2_8 value in the cyclic representation of that field. The + * value z should be an uint8_t. + */ +#define gf2_8_shift(z) \ + (((z)&128) ? (((z) << 1) ^ gf2_8_field_polynomial) : ((z) << 1)) + +/* aes internals */ + +static void aes_128_expand_encryption_key(const uint8_t *key, + srtp_aes_expanded_key_t *expanded_key) +{ + int i; + uint8_t rc; + + /* initialize round constant */ + rc = 1; + + expanded_key->num_rounds = 10; + + v128_copy_octet_string(&expanded_key->round[0], key); + + /* loop over round keys */ + for (i = 1; i < 11; i++) { + /* munge first word of round key */ + expanded_key->round[i].v8[0] = + aes_sbox[expanded_key->round[i - 1].v8[13]] ^ rc; + expanded_key->round[i].v8[1] = + aes_sbox[expanded_key->round[i - 1].v8[14]]; + expanded_key->round[i].v8[2] = + aes_sbox[expanded_key->round[i - 1].v8[15]]; + expanded_key->round[i].v8[3] = + aes_sbox[expanded_key->round[i - 1].v8[12]]; + + expanded_key->round[i].v32[0] ^= expanded_key->round[i - 1].v32[0]; + + /* set remaining 32 bit words to the exor of the one previous with + * the one four words previous */ + + expanded_key->round[i].v32[1] = + expanded_key->round[i].v32[0] ^ expanded_key->round[i - 1].v32[1]; + + expanded_key->round[i].v32[2] = + expanded_key->round[i].v32[1] ^ expanded_key->round[i - 1].v32[2]; + + expanded_key->round[i].v32[3] = + expanded_key->round[i].v32[2] ^ expanded_key->round[i - 1].v32[3]; + + /* modify round constant */ + rc = gf2_8_shift(rc); + } +} + +static void aes_256_expand_encryption_key(const unsigned char *key, + srtp_aes_expanded_key_t *expanded_key) +{ + int i; + uint8_t rc; + + /* initialize round constant */ + rc = 1; + + expanded_key->num_rounds = 14; + + v128_copy_octet_string(&expanded_key->round[0], key); + v128_copy_octet_string(&expanded_key->round[1], key + 16); + + /* loop over rest of round keys */ + for (i = 2; i < 15; i++) { + /* munge first word of round key */ + if ((i & 1) == 0) { + expanded_key->round[i].v8[0] = + aes_sbox[expanded_key->round[i - 1].v8[13]] ^ rc; + expanded_key->round[i].v8[1] = + aes_sbox[expanded_key->round[i - 1].v8[14]]; + expanded_key->round[i].v8[2] = + aes_sbox[expanded_key->round[i - 1].v8[15]]; + expanded_key->round[i].v8[3] = + aes_sbox[expanded_key->round[i - 1].v8[12]]; + + /* modify round constant */ + rc = gf2_8_shift(rc); + } else { + expanded_key->round[i].v8[0] = + aes_sbox[expanded_key->round[i - 1].v8[12]]; + expanded_key->round[i].v8[1] = + aes_sbox[expanded_key->round[i - 1].v8[13]]; + expanded_key->round[i].v8[2] = + aes_sbox[expanded_key->round[i - 1].v8[14]]; + expanded_key->round[i].v8[3] = + aes_sbox[expanded_key->round[i - 1].v8[15]]; + } + + expanded_key->round[i].v32[0] ^= expanded_key->round[i - 2].v32[0]; + + /* set remaining 32 bit words to the exor of the one previous with + * the one eight words previous */ + + expanded_key->round[i].v32[1] = + expanded_key->round[i].v32[0] ^ expanded_key->round[i - 2].v32[1]; + + expanded_key->round[i].v32[2] = + expanded_key->round[i].v32[1] ^ expanded_key->round[i - 2].v32[2]; + + expanded_key->round[i].v32[3] = + expanded_key->round[i].v32[2] ^ expanded_key->round[i - 2].v32[3]; + } +} + +srtp_err_status_t srtp_aes_expand_encryption_key( + const uint8_t *key, + int key_len, + srtp_aes_expanded_key_t *expanded_key) +{ + if (key_len == 16) { + aes_128_expand_encryption_key(key, expanded_key); + return srtp_err_status_ok; + } else if (key_len == 24) { + /* AES-192 not yet supported */ + return srtp_err_status_bad_param; + } else if (key_len == 32) { + aes_256_expand_encryption_key(key, expanded_key); + return srtp_err_status_ok; + } else { + return srtp_err_status_bad_param; + } +} + +srtp_err_status_t srtp_aes_expand_decryption_key( + const uint8_t *key, + int key_len, + srtp_aes_expanded_key_t *expanded_key) +{ + int i; + srtp_err_status_t status; + int num_rounds = expanded_key->num_rounds; + + status = srtp_aes_expand_encryption_key(key, key_len, expanded_key); + if (status) { + return status; + } + + /* invert the order of the round keys */ + for (i = 0; i < num_rounds / 2; i++) { + v128_t tmp; + v128_copy(&tmp, &expanded_key->round[num_rounds - i]); + v128_copy(&expanded_key->round[num_rounds - i], + &expanded_key->round[i]); + v128_copy(&expanded_key->round[i], &tmp); + } + + /* + * apply the inverse mixColumn transform to the round keys (except + * for the first and the last) + * + * mixColumn is implemented by using the tables U0, U1, U2, U3, + * followed by the T4 table (which cancels out the use of the sbox + * in the U-tables) + */ + for (i = 1; i < num_rounds; i++) { +#ifdef CPU_RISC + uint32_t tmp; + +#ifdef WORDS_BIGENDIAN + /* clang-format off */ + tmp = expanded_key->round[i].v32[0]; + expanded_key->round[i].v32[0] = + U0[T4[(tmp >> 24) ] & 0xff] ^ + U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U3[T4[(tmp) & 0xff] & 0xff]; + + tmp = expanded_key->round[i].v32[1]; + expanded_key->round[i].v32[1] = + U0[T4[(tmp >> 24) ] & 0xff] ^ + U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U3[T4[(tmp) & 0xff] & 0xff]; + + tmp = expanded_key->round[i].v32[2]; + expanded_key->round[i].v32[2] = + U0[T4[(tmp >> 24) ] & 0xff] ^ + U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U3[T4[(tmp) & 0xff] & 0xff]; + + tmp = expanded_key->round[i].v32[3]; + expanded_key->round[i].v32[3] = + U0[T4[(tmp >> 24) ] & 0xff] ^ + U1[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U2[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U3[T4[(tmp) & 0xff] & 0xff]; +#else + tmp = expanded_key->round[i].v32[0]; + expanded_key->round[i].v32[0] = + U3[T4[(tmp >> 24) ] & 0xff] ^ + U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U0[T4[(tmp) & 0xff] & 0xff]; + + tmp = expanded_key->round[i].v32[1]; + expanded_key->round[i].v32[1] = + U3[T4[(tmp >> 24) ] & 0xff] ^ + U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U0[T4[(tmp) & 0xff] & 0xff]; + + tmp = expanded_key->round[i].v32[2]; + expanded_key->round[i].v32[2] = + U3[T4[(tmp >> 24) ] & 0xff] ^ + U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U0[T4[(tmp) & 0xff] & 0xff]; + + tmp = expanded_key->round[i].v32[3]; + expanded_key->round[i].v32[3] = + U3[T4[(tmp >> 24) ] & 0xff] ^ + U2[T4[(tmp >> 16) & 0xff] & 0xff] ^ + U1[T4[(tmp >> 8) & 0xff] & 0xff] ^ + U0[T4[(tmp) & 0xff] & 0xff]; +/* clang-format on */ +#endif /* WORDS_BIGENDIAN */ + +#else /* assume CPU_CISC */ + + uint32_t c0, c1, c2, c3; + + c0 = U0[aes_sbox[expanded_key->round[i].v8[0]]] ^ + U1[aes_sbox[expanded_key->round[i].v8[1]]] ^ + U2[aes_sbox[expanded_key->round[i].v8[2]]] ^ + U3[aes_sbox[expanded_key->round[i].v8[3]]]; + + c1 = U0[aes_sbox[expanded_key->round[i].v8[4]]] ^ + U1[aes_sbox[expanded_key->round[i].v8[5]]] ^ + U2[aes_sbox[expanded_key->round[i].v8[6]]] ^ + U3[aes_sbox[expanded_key->round[i].v8[7]]]; + + c2 = U0[aes_sbox[expanded_key->round[i].v8[8]]] ^ + U1[aes_sbox[expanded_key->round[i].v8[9]]] ^ + U2[aes_sbox[expanded_key->round[i].v8[10]]] ^ + U3[aes_sbox[expanded_key->round[i].v8[11]]]; + + c3 = U0[aes_sbox[expanded_key->round[i].v8[12]]] ^ + U1[aes_sbox[expanded_key->round[i].v8[13]]] ^ + U2[aes_sbox[expanded_key->round[i].v8[14]]] ^ + U3[aes_sbox[expanded_key->round[i].v8[15]]]; + + expanded_key->round[i].v32[0] = c0; + expanded_key->round[i].v32[1] = c1; + expanded_key->round[i].v32[2] = c2; + expanded_key->round[i].v32[3] = c3; + +#endif + } + + return srtp_err_status_ok; +} + +#ifdef CPU_CISC + +static inline void aes_round(v128_t *state, const v128_t *round_key) +{ + uint32_t column0, column1, column2, column3; + + /* compute the columns of the output square in terms of the octets + of state, using the tables T0, T1, T2, T3 */ + + column0 = T0[state->v8[0]] ^ T1[state->v8[5]] ^ T2[state->v8[10]] ^ + T3[state->v8[15]]; + + column1 = T0[state->v8[4]] ^ T1[state->v8[9]] ^ T2[state->v8[14]] ^ + T3[state->v8[3]]; + + column2 = T0[state->v8[8]] ^ T1[state->v8[13]] ^ T2[state->v8[2]] ^ + T3[state->v8[7]]; + + column3 = T0[state->v8[12]] ^ T1[state->v8[1]] ^ T2[state->v8[6]] ^ + T3[state->v8[11]]; + + state->v32[0] = column0 ^ round_key->v32[0]; + state->v32[1] = column1 ^ round_key->v32[1]; + state->v32[2] = column2 ^ round_key->v32[2]; + state->v32[3] = column3 ^ round_key->v32[3]; +} + +static inline void aes_inv_round(v128_t *state, const v128_t *round_key) +{ + uint32_t column0, column1, column2, column3; + + /* compute the columns of the output square in terms of the octets + of state, using the tables U0, U1, U2, U3 */ + + column0 = U0[state->v8[0]] ^ U1[state->v8[13]] ^ U2[state->v8[10]] ^ + U3[state->v8[7]]; + + column1 = U0[state->v8[4]] ^ U1[state->v8[1]] ^ U2[state->v8[14]] ^ + U3[state->v8[11]]; + + column2 = U0[state->v8[8]] ^ U1[state->v8[5]] ^ U2[state->v8[2]] ^ + U3[state->v8[15]]; + + column3 = U0[state->v8[12]] ^ U1[state->v8[9]] ^ U2[state->v8[6]] ^ + U3[state->v8[3]]; + + state->v32[0] = column0 ^ round_key->v32[0]; + state->v32[1] = column1 ^ round_key->v32[1]; + state->v32[2] = column2 ^ round_key->v32[2]; + state->v32[3] = column3 ^ round_key->v32[3]; +} + +static inline void aes_final_round(v128_t *state, const v128_t *round_key) +{ + uint8_t tmp; + + /* byte substitutions and row shifts */ + /* first row - no shift */ + state->v8[0] = aes_sbox[state->v8[0]]; + state->v8[4] = aes_sbox[state->v8[4]]; + state->v8[8] = aes_sbox[state->v8[8]]; + state->v8[12] = aes_sbox[state->v8[12]]; + + /* second row - shift one left */ + tmp = aes_sbox[state->v8[1]]; + state->v8[1] = aes_sbox[state->v8[5]]; + state->v8[5] = aes_sbox[state->v8[9]]; + state->v8[9] = aes_sbox[state->v8[13]]; + state->v8[13] = tmp; + + /* third row - shift two left */ + tmp = aes_sbox[state->v8[10]]; + state->v8[10] = aes_sbox[state->v8[2]]; + state->v8[2] = tmp; + tmp = aes_sbox[state->v8[14]]; + state->v8[14] = aes_sbox[state->v8[6]]; + state->v8[6] = tmp; + + /* fourth row - shift three left */ + tmp = aes_sbox[state->v8[15]]; + state->v8[15] = aes_sbox[state->v8[11]]; + state->v8[11] = aes_sbox[state->v8[7]]; + state->v8[7] = aes_sbox[state->v8[3]]; + state->v8[3] = tmp; + + v128_xor_eq(state, round_key); +} + +static inline void aes_inv_final_round(v128_t *state, const v128_t *round_key) +{ + uint8_t tmp; + + /* byte substitutions and row shifts */ + /* first row - no shift */ + state->v8[0] = aes_inv_sbox[state->v8[0]]; + state->v8[4] = aes_inv_sbox[state->v8[4]]; + state->v8[8] = aes_inv_sbox[state->v8[8]]; + state->v8[12] = aes_inv_sbox[state->v8[12]]; + + /* second row - shift one right */ + tmp = aes_inv_sbox[state->v8[13]]; + state->v8[13] = aes_inv_sbox[state->v8[9]]; + state->v8[9] = aes_inv_sbox[state->v8[5]]; + state->v8[5] = aes_inv_sbox[state->v8[1]]; + state->v8[1] = tmp; + + /* third row - shift two right */ + tmp = aes_inv_sbox[state->v8[2]]; + state->v8[2] = aes_inv_sbox[state->v8[10]]; + state->v8[10] = tmp; + tmp = aes_inv_sbox[state->v8[6]]; + state->v8[6] = aes_inv_sbox[state->v8[14]]; + state->v8[14] = tmp; + + /* fourth row - shift three right */ + tmp = aes_inv_sbox[state->v8[3]]; + state->v8[3] = aes_inv_sbox[state->v8[7]]; + state->v8[7] = aes_inv_sbox[state->v8[11]]; + state->v8[11] = aes_inv_sbox[state->v8[15]]; + state->v8[15] = tmp; + + v128_xor_eq(state, round_key); +} + +#elif defined(CPU_RISC) + +static inline void aes_round(v128_t *state, const v128_t *round_key) +{ + uint32_t column0, column1, column2, column3; + +/* compute the columns of the output square in terms of the octets + of state, using the tables T0, T1, T2, T3 */ +#ifdef WORDS_BIGENDIAN + column0 = T0[state->v32[0] >> 24] ^ T1[(state->v32[1] >> 16) & 0xff] ^ + T2[(state->v32[2] >> 8) & 0xff] ^ T3[state->v32[3] & 0xff]; + + column1 = T0[state->v32[1] >> 24] ^ T1[(state->v32[2] >> 16) & 0xff] ^ + T2[(state->v32[3] >> 8) & 0xff] ^ T3[state->v32[0] & 0xff]; + + column2 = T0[state->v32[2] >> 24] ^ T1[(state->v32[3] >> 16) & 0xff] ^ + T2[(state->v32[0] >> 8) & 0xff] ^ T3[state->v32[1] & 0xff]; + + column3 = T0[state->v32[3] >> 24] ^ T1[(state->v32[0] >> 16) & 0xff] ^ + T2[(state->v32[1] >> 8) & 0xff] ^ T3[state->v32[2] & 0xff]; +#else + column0 = T0[state->v32[0] & 0xff] ^ T1[(state->v32[1] >> 8) & 0xff] ^ + T2[(state->v32[2] >> 16) & 0xff] ^ T3[state->v32[3] >> 24]; + + column1 = T0[state->v32[1] & 0xff] ^ T1[(state->v32[2] >> 8) & 0xff] ^ + T2[(state->v32[3] >> 16) & 0xff] ^ T3[state->v32[0] >> 24]; + + column2 = T0[state->v32[2] & 0xff] ^ T1[(state->v32[3] >> 8) & 0xff] ^ + T2[(state->v32[0] >> 16) & 0xff] ^ T3[state->v32[1] >> 24]; + + column3 = T0[state->v32[3] & 0xff] ^ T1[(state->v32[0] >> 8) & 0xff] ^ + T2[(state->v32[1] >> 16) & 0xff] ^ T3[state->v32[2] >> 24]; +#endif /* WORDS_BIGENDIAN */ + + state->v32[0] = column0 ^ round_key->v32[0]; + state->v32[1] = column1 ^ round_key->v32[1]; + state->v32[2] = column2 ^ round_key->v32[2]; + state->v32[3] = column3 ^ round_key->v32[3]; +} + +static inline void aes_inv_round(v128_t *state, const v128_t *round_key) +{ + uint32_t column0, column1, column2, column3; + +/* compute the columns of the output square in terms of the octets + of state, using the tables U0, U1, U2, U3 */ + +#ifdef WORDS_BIGENDIAN + column0 = U0[state->v32[0] >> 24] ^ U1[(state->v32[3] >> 16) & 0xff] ^ + U2[(state->v32[2] >> 8) & 0xff] ^ U3[state->v32[1] & 0xff]; + + column1 = U0[state->v32[1] >> 24] ^ U1[(state->v32[0] >> 16) & 0xff] ^ + U2[(state->v32[3] >> 8) & 0xff] ^ U3[state->v32[2] & 0xff]; + + column2 = U0[state->v32[2] >> 24] ^ U1[(state->v32[1] >> 16) & 0xff] ^ + U2[(state->v32[0] >> 8) & 0xff] ^ U3[state->v32[3] & 0xff]; + + column3 = U0[state->v32[3] >> 24] ^ U1[(state->v32[2] >> 16) & 0xff] ^ + U2[(state->v32[1] >> 8) & 0xff] ^ U3[state->v32[0] & 0xff]; +#else + column0 = U0[state->v32[0] & 0xff] ^ U1[(state->v32[3] >> 8) & 0xff] ^ + U2[(state->v32[2] >> 16) & 0xff] ^ + U3[(state->v32[1] >> 24) & 0xff]; + + column1 = U0[state->v32[1] & 0xff] ^ U1[(state->v32[0] >> 8) & 0xff] ^ + U2[(state->v32[3] >> 16) & 0xff] ^ + U3[(state->v32[2] >> 24) & 0xff]; + + column2 = U0[state->v32[2] & 0xff] ^ U1[(state->v32[1] >> 8) & 0xff] ^ + U2[(state->v32[0] >> 16) & 0xff] ^ + U3[(state->v32[3] >> 24) & 0xff]; + + column3 = U0[state->v32[3] & 0xff] ^ U1[(state->v32[2] >> 8) & 0xff] ^ + U2[(state->v32[1] >> 16) & 0xff] ^ + U3[(state->v32[0] >> 24) & 0xff]; +#endif /* WORDS_BIGENDIAN */ + + state->v32[0] = column0 ^ round_key->v32[0]; + state->v32[1] = column1 ^ round_key->v32[1]; + state->v32[2] = column2 ^ round_key->v32[2]; + state->v32[3] = column3 ^ round_key->v32[3]; +} + +static inline void aes_final_round(v128_t *state, const v128_t *round_key) +{ + uint32_t tmp0, tmp1, tmp2, tmp3; + +#ifdef WORDS_BIGENDIAN + /* clang-format off */ + tmp0 = (T4[(state->v32[0] >> 24)] & 0xff000000) ^ + (T4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ + round_key->v32[0]; + + tmp1 = (T4[(state->v32[1] >> 24)] & 0xff000000) ^ + (T4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ + round_key->v32[1]; + + tmp2 = (T4[(state->v32[2] >> 24)] & 0xff000000) ^ + (T4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ + round_key->v32[2]; + + tmp3 = (T4[(state->v32[3] >> 24)] & 0xff000000) ^ + (T4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ + round_key->v32[3]; +#else + tmp0 = (T4[(state->v32[3] >> 24)] & 0xff000000) ^ + (T4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ + round_key->v32[0]; + + tmp1 = (T4[(state->v32[0] >> 24)] & 0xff000000) ^ + (T4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ + round_key->v32[1]; + + tmp2 = (T4[(state->v32[1] >> 24)] & 0xff000000) ^ + (T4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ + round_key->v32[2]; + + tmp3 = (T4[(state->v32[2] >> 24)] & 0xff000000) ^ + (T4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ + (T4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ + (T4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ + round_key->v32[3]; +/* clang-format on */ +#endif /* WORDS_BIGENDIAN */ + + state->v32[0] = tmp0; + state->v32[1] = tmp1; + state->v32[2] = tmp2; + state->v32[3] = tmp3; +} + +static inline void aes_inv_final_round(v128_t *state, const v128_t *round_key) +{ + uint32_t tmp0, tmp1, tmp2, tmp3; + +#ifdef WORDS_BIGENDIAN + /* clang-format off */ + tmp0 = (U4[(state->v32[0] >> 24)] & 0xff000000) ^ + (U4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ + round_key->v32[0]; + + tmp1 = (U4[(state->v32[1] >> 24)] & 0xff000000) ^ + (U4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ + round_key->v32[1]; + + tmp2 = (U4[(state->v32[2] >> 24)] & 0xff000000) ^ + (U4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ + round_key->v32[2]; + + tmp3 = (U4[(state->v32[3] >> 24)] & 0xff000000) ^ + (U4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ + round_key->v32[3]; +#else + tmp0 = (U4[(state->v32[1] >> 24)] & 0xff000000) ^ + (U4[(state->v32[2] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[3] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[0] ) & 0xff] & 0x000000ff) ^ + round_key->v32[0]; + + tmp1 = (U4[(state->v32[2] >> 24)] & 0xff000000) ^ + (U4[(state->v32[3] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[0] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[1] ) & 0xff] & 0x000000ff) ^ + round_key->v32[1]; + + tmp2 = (U4[(state->v32[3] >> 24)] & 0xff000000) ^ + (U4[(state->v32[0] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[1] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[2] ) & 0xff] & 0x000000ff) ^ + round_key->v32[2]; + + tmp3 = (U4[(state->v32[0] >> 24)] & 0xff000000) ^ + (U4[(state->v32[1] >> 16) & 0xff] & 0x00ff0000) ^ + (U4[(state->v32[2] >> 8) & 0xff] & 0x0000ff00) ^ + (U4[(state->v32[3] ) & 0xff] & 0x000000ff) ^ + round_key->v32[3]; +/* clang-format on */ +#endif /* WORDS_BIGENDIAN */ + + state->v32[0] = tmp0; + state->v32[1] = tmp1; + state->v32[2] = tmp2; + state->v32[3] = tmp3; +} + +#elif CPU_16 /* assume 16-bit word size on processor */ + +static inline void aes_round(v128_t *state, const v128_t *round_key) +{ + uint32_t column0, column1, column2, column3; + /* compute the columns of the output square in terms of the octets + of state, using the tables T0, T1, T2, T3 */ + + column0 = T0[state->v8[0]] ^ T1[state->v8[5]] ^ T2[state->v8[10]] ^ + T3[state->v8[15]]; + + column1 = T0[state->v8[4]] ^ T1[state->v8[9]] ^ T2[state->v8[14]] ^ + T3[state->v8[3]]; + + column2 = T0[state->v8[8]] ^ T1[state->v8[13]] ^ T2[state->v8[2]] ^ + T3[state->v8[7]]; + + column3 = T0[state->v8[12]] ^ T1[state->v8[1]] ^ T2[state->v8[6]] ^ + T3[state->v8[11]]; + + state->v32[0] = column0 ^ round_key->v32[0]; + state->v32[1] = column1 ^ round_key->v32[1]; + state->v32[2] = column2 ^ round_key->v32[2]; + state->v32[3] = column3 ^ round_key->v32[3]; +} + +static inline void aes_inv_round(v128_t *state, const v128_t *round_key) +{ + uint32_t column0, column1, column2, column3; + + /* compute the columns of the output square in terms of the octets + of state, using the tables U0, U1, U2, U3 */ + + column0 = U0[state->v8[0]] ^ U1[state->v8[5]] ^ U2[state->v8[10]] ^ + U3[state->v8[15]]; + + column1 = U0[state->v8[4]] ^ U1[state->v8[9]] ^ U2[state->v8[14]] ^ + U3[state->v8[3]]; + + column2 = U0[state->v8[8]] ^ U1[state->v8[13]] ^ U2[state->v8[2]] ^ + U3[state->v8[7]]; + + column3 = U0[state->v8[12]] ^ U1[state->v8[1]] ^ U2[state->v8[6]] ^ + U3[state->v8[11]]; + + state->v32[0] = column0 ^ round_key->v32[0]; + state->v32[1] = column1 ^ round_key->v32[1]; + state->v32[2] = column2 ^ round_key->v32[2]; + state->v32[3] = column3 ^ round_key->v32[3]; +} + +static inline void aes_final_round(v128_t *state, const v128_t *round_key) +{ + uint8_t tmp; + + /* byte substitutions and row shifts */ + /* first row - no shift */ + state->v8[0] = aes_sbox[state->v8[0]]; + state->v8[4] = aes_sbox[state->v8[4]]; + state->v8[8] = aes_sbox[state->v8[8]]; + state->v8[12] = aes_sbox[state->v8[12]]; + + /* second row - shift one left */ + tmp = aes_sbox[state->v8[1]]; + state->v8[1] = aes_sbox[state->v8[5]]; + state->v8[5] = aes_sbox[state->v8[9]]; + state->v8[9] = aes_sbox[state->v8[13]]; + state->v8[13] = tmp; + + /* third row - shift two left */ + tmp = aes_sbox[state->v8[10]]; + state->v8[10] = aes_sbox[state->v8[2]]; + state->v8[2] = tmp; + tmp = aes_sbox[state->v8[14]]; + state->v8[14] = aes_sbox[state->v8[6]]; + state->v8[6] = tmp; + + /* fourth row - shift three left */ + tmp = aes_sbox[state->v8[15]]; + state->v8[15] = aes_sbox[state->v8[11]]; + state->v8[11] = aes_sbox[state->v8[7]]; + state->v8[7] = aes_sbox[state->v8[3]]; + state->v8[3] = tmp; + + v128_xor_eq(state, round_key); +} + +static inline void aes_inv_final_round(v128_t *state, const v128_t *round_key) +{ + uint8_t tmp; + + /* byte substitutions and row shifts */ + /* first row - no shift */ + state->v8[0] = aes_inv_sbox[state->v8[0]]; + state->v8[4] = aes_inv_sbox[state->v8[4]]; + state->v8[8] = aes_inv_sbox[state->v8[8]]; + state->v8[12] = aes_inv_sbox[state->v8[12]]; + + /* second row - shift one left */ + tmp = aes_inv_sbox[state->v8[1]]; + state->v8[1] = aes_inv_sbox[state->v8[5]]; + state->v8[5] = aes_inv_sbox[state->v8[9]]; + state->v8[9] = aes_inv_sbox[state->v8[13]]; + state->v8[13] = tmp; + + /* third row - shift two left */ + tmp = aes_inv_sbox[state->v8[10]]; + state->v8[10] = aes_inv_sbox[state->v8[2]]; + state->v8[2] = tmp; + tmp = aes_inv_sbox[state->v8[14]]; + state->v8[14] = aes_inv_sbox[state->v8[6]]; + state->v8[6] = tmp; + + /* fourth row - shift three left */ + tmp = aes_inv_sbox[state->v8[15]]; + state->v8[15] = aes_inv_sbox[state->v8[11]]; + state->v8[11] = aes_inv_sbox[state->v8[7]]; + state->v8[7] = aes_inv_sbox[state->v8[3]]; + state->v8[3] = tmp; + + v128_xor_eq(state, round_key); +} + +#endif /* CPU type */ + +void srtp_aes_encrypt(v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key) +{ + /* add in the subkey */ + v128_xor_eq(plaintext, &exp_key->round[0]); + + /* now do the rounds */ + aes_round(plaintext, &exp_key->round[1]); + aes_round(plaintext, &exp_key->round[2]); + aes_round(plaintext, &exp_key->round[3]); + aes_round(plaintext, &exp_key->round[4]); + aes_round(plaintext, &exp_key->round[5]); + aes_round(plaintext, &exp_key->round[6]); + aes_round(plaintext, &exp_key->round[7]); + aes_round(plaintext, &exp_key->round[8]); + aes_round(plaintext, &exp_key->round[9]); + if (exp_key->num_rounds == 10) { + aes_final_round(plaintext, &exp_key->round[10]); + } else if (exp_key->num_rounds == 12) { + aes_round(plaintext, &exp_key->round[10]); + aes_round(plaintext, &exp_key->round[11]); + aes_final_round(plaintext, &exp_key->round[12]); + } else if (exp_key->num_rounds == 14) { + aes_round(plaintext, &exp_key->round[10]); + aes_round(plaintext, &exp_key->round[11]); + aes_round(plaintext, &exp_key->round[12]); + aes_round(plaintext, &exp_key->round[13]); + aes_final_round(plaintext, &exp_key->round[14]); + } +} + +void srtp_aes_decrypt(v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key) +{ + /* add in the subkey */ + v128_xor_eq(plaintext, &exp_key->round[0]); + + /* now do the rounds */ + aes_inv_round(plaintext, &exp_key->round[1]); + aes_inv_round(plaintext, &exp_key->round[2]); + aes_inv_round(plaintext, &exp_key->round[3]); + aes_inv_round(plaintext, &exp_key->round[4]); + aes_inv_round(plaintext, &exp_key->round[5]); + aes_inv_round(plaintext, &exp_key->round[6]); + aes_inv_round(plaintext, &exp_key->round[7]); + aes_inv_round(plaintext, &exp_key->round[8]); + aes_inv_round(plaintext, &exp_key->round[9]); + if (exp_key->num_rounds == 10) { + aes_inv_final_round(plaintext, &exp_key->round[10]); + } else if (exp_key->num_rounds == 12) { + aes_inv_round(plaintext, &exp_key->round[10]); + aes_inv_round(plaintext, &exp_key->round[11]); + aes_inv_final_round(plaintext, &exp_key->round[12]); + } else if (exp_key->num_rounds == 14) { + aes_inv_round(plaintext, &exp_key->round[10]); + aes_inv_round(plaintext, &exp_key->round[11]); + aes_inv_round(plaintext, &exp_key->round[12]); + aes_inv_round(plaintext, &exp_key->round[13]); + aes_inv_final_round(plaintext, &exp_key->round[14]); + } +} diff --git a/third_party/libsrtp/src/crypto/cipher/aes_gcm_mbedtls.c b/third_party/libsrtp/src/crypto/cipher/aes_gcm_mbedtls.c new file mode 100644 index 0000000000..d7d4b61cdf --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_gcm_mbedtls.c @@ -0,0 +1,412 @@ +/* + * aes_gcm_mbedtls.c + * + * AES Galois Counter Mode + * + * YongCheng Yang + * + */ + +/* + * + * Copyright (c) 2013-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <mbedtls/gcm.h> +#include "aes_gcm.h" +#include "alloc.h" +#include "err.h" /* for srtp_debug */ +#include "crypto_types.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" + +srtp_debug_module_t srtp_mod_aes_gcm = { + 0, /* debugging is off by default */ + "aes gcm mbedtls" /* printable module name */ +}; + +/** + * SRTP IV Formation for AES-GCM + * https://tools.ietf.org/html/rfc7714#section-8.1 + * 0 0 0 0 0 0 0 0 0 0 1 1 + * 0 1 2 3 4 5 6 7 8 9 0 1 + * +--+--+--+--+--+--+--+--+--+--+--+--+ + * |00|00| SSRC | ROC | SEQ |---+ + * +--+--+--+--+--+--+--+--+--+--+--+--+ | + * | + * +--+--+--+--+--+--+--+--+--+--+--+--+ | + * | Encryption Salt |->(+) + * +--+--+--+--+--+--+--+--+--+--+--+--+ | + * | + * +--+--+--+--+--+--+--+--+--+--+--+--+ | + * | Initialization Vector |<--+ + * +--+--+--+--+--+--+--+--+--+--+--+--+ + * + * SRTCP IV Formation for AES-GCM + * https://tools.ietf.org/html/rfc7714#section-9.1 + * + */ + +/* + * For now we only support 8 and 16 octet tags. The spec allows for + * optional 12 byte tag, which may be supported in the future. + */ +#define GCM_IV_LEN 12 +#define GCM_AUTH_TAG_LEN 16 +#define GCM_AUTH_TAG_LEN_8 8 + +#define FUNC_ENTRY() debug_print(srtp_mod_aes_gcm, "%s entry", __func__); +/* + * This function allocates a new instance of this crypto engine. + * The key_len parameter should be one of 28 or 44 for + * AES-128-GCM or AES-256-GCM respectively. Note that the + * key length includes the 14 byte salt value that is used when + * initializing the KDF. + */ +static srtp_err_status_t srtp_aes_gcm_mbedtls_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + FUNC_ENTRY(); + srtp_aes_gcm_ctx_t *gcm; + + debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d", + key_len); + debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen); + + /* + * Verify the key_len is valid for one of: AES-128/256 + */ + if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) { + return (srtp_err_status_bad_param); + } + + if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) { + return (srtp_err_status_bad_param); + } + + /* allocate memory a cipher of type aes_gcm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + return (srtp_err_status_alloc_fail); + } + + gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t)); + if (gcm == NULL) { + srtp_crypto_free(*c); + *c = NULL; + return (srtp_err_status_alloc_fail); + } + + gcm->ctx = + (mbedtls_gcm_context *)srtp_crypto_alloc(sizeof(mbedtls_gcm_context)); + if (gcm->ctx == NULL) { + srtp_crypto_free(gcm); + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + mbedtls_gcm_init(gcm->ctx); + + /* set pointers */ + (*c)->state = gcm; + + /* setup cipher attributes */ + switch (key_len) { + case SRTP_AES_GCM_128_KEY_LEN_WSALT: + (*c)->type = &srtp_aes_gcm_128; + (*c)->algorithm = SRTP_AES_GCM_128; + gcm->key_size = SRTP_AES_128_KEY_LEN; + gcm->tag_len = tlen; + break; + case SRTP_AES_GCM_256_KEY_LEN_WSALT: + (*c)->type = &srtp_aes_gcm_256; + (*c)->algorithm = SRTP_AES_GCM_256; + gcm->key_size = SRTP_AES_256_KEY_LEN; + gcm->tag_len = tlen; + break; + } + + /* set key size */ + (*c)->key_len = key_len; + + return (srtp_err_status_ok); +} + +/* + * This function deallocates a GCM session + */ +static srtp_err_status_t srtp_aes_gcm_mbedtls_dealloc(srtp_cipher_t *c) +{ + srtp_aes_gcm_ctx_t *ctx; + FUNC_ENTRY(); + ctx = (srtp_aes_gcm_ctx_t *)c->state; + if (ctx) { + mbedtls_gcm_free(ctx->ctx); + srtp_crypto_free(ctx->ctx); + /* zeroize the key material */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free memory */ + srtp_crypto_free(c); + + return (srtp_err_status_ok); +} + +static srtp_err_status_t srtp_aes_gcm_mbedtls_context_init(void *cv, + const uint8_t *key) +{ + FUNC_ENTRY(); + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + uint32_t key_len_in_bits; + int errCode = 0; + c->dir = srtp_direction_any; + c->aad_size = 0; + + debug_print(srtp_mod_aes_gcm, "key: %s", + srtp_octet_string_hex_string(key, c->key_size)); + key_len_in_bits = (c->key_size << 3); + switch (c->key_size) { + case SRTP_AES_256_KEY_LEN: + case SRTP_AES_128_KEY_LEN: + break; + default: + return (srtp_err_status_bad_param); + break; + } + + errCode = mbedtls_gcm_setkey(c->ctx, MBEDTLS_CIPHER_ID_AES, + (const unsigned char *)key, key_len_in_bits); + if (errCode != 0) { + debug_print(srtp_mod_aes_gcm, "mbedtls error code: %d", errCode); + return srtp_err_status_init_fail; + } + + return (srtp_err_status_ok); +} + +static srtp_err_status_t srtp_aes_gcm_mbedtls_set_iv( + void *cv, + uint8_t *iv, + srtp_cipher_direction_t direction) +{ + FUNC_ENTRY(); + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + if (direction != srtp_direction_encrypt && + direction != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + c->dir = direction; + + debug_print(srtp_mod_aes_gcm, "setting iv: %s", + srtp_octet_string_hex_string(iv, GCM_IV_LEN)); + c->iv_len = GCM_IV_LEN; + memcpy(c->iv, iv, c->iv_len); + return (srtp_err_status_ok); +} + +/* + * This function processes the AAD + * + * Parameters: + * c Crypto context + * aad Additional data to process for AEAD cipher suites + * aad_len length of aad buffer + */ +static srtp_err_status_t srtp_aes_gcm_mbedtls_set_aad(void *cv, + const uint8_t *aad, + uint32_t aad_len) +{ + FUNC_ENTRY(); + int errCode = 0; + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + debug_print(srtp_mod_aes_gcm, "setting AAD: %s", + srtp_octet_string_hex_string(aad, aad_len)); + + if (aad_len + c->aad_size > MAX_AD_SIZE) { + return srtp_err_status_bad_param; + } + + memcpy(c->aad + c->aad_size, aad, aad_len); + c->aad_size += aad_len; + + return (srtp_err_status_ok); +} + +/* + * This function encrypts a buffer using AES GCM mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_mbedtls_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + FUNC_ENTRY(); + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + int errCode = 0; + + if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + + errCode = mbedtls_gcm_crypt_and_tag(c->ctx, MBEDTLS_GCM_ENCRYPT, *enc_len, + c->iv, c->iv_len, c->aad, c->aad_size, + buf, buf, c->tag_len, c->tag); + + c->aad_size = 0; + if (errCode != 0) { + debug_print(srtp_mod_aes_gcm, "mbedtls error code: %d", errCode); + return srtp_err_status_bad_param; + } + + return (srtp_err_status_ok); +} + +/* + * This function calculates and returns the GCM tag for a given context. + * This should be called after encrypting the data. The *len value + * is increased by the tag size. The caller must ensure that *buf has + * enough room to accept the appended tag. + * + * Parameters: + * c Crypto context + * buf data to encrypt + * len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_mbedtls_get_tag(void *cv, + uint8_t *buf, + uint32_t *len) +{ + FUNC_ENTRY(); + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + debug_print(srtp_mod_aes_gcm, "appended tag size: %d", c->tag_len); + *len = c->tag_len; + memcpy(buf, c->tag, c->tag_len); + return (srtp_err_status_ok); +} + +/* + * This function decrypts a buffer using AES GCM mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_mbedtls_decrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + FUNC_ENTRY(); + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + int errCode = 0; + int len = *enc_len; + + if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + + debug_print(srtp_mod_aes_gcm, "AAD: %s", + srtp_octet_string_hex_string(c->aad, c->aad_size)); + + errCode = mbedtls_gcm_auth_decrypt( + c->ctx, (*enc_len - c->tag_len), c->iv, c->iv_len, c->aad, c->aad_size, + buf + (*enc_len - c->tag_len), c->tag_len, buf, buf); + c->aad_size = 0; + if (errCode != 0) { + return (srtp_err_status_auth_fail); + } + + /* + * Reduce the buffer size by the tag length since the tag + * is not part of the original payload + */ + *enc_len -= c->tag_len; + + return (srtp_err_status_ok); +} + +/* + * Name of this crypto engine + */ +static const char srtp_aes_gcm_128_mbedtls_description[] = + "AES-128 GCM using mbedtls"; +static const char srtp_aes_gcm_256_mbedtls_description[] = + "AES-256 GCM using mbedtls"; + +/* + * This is the vector function table for this crypto engine. + */ +const srtp_cipher_type_t srtp_aes_gcm_128 = { + srtp_aes_gcm_mbedtls_alloc, + srtp_aes_gcm_mbedtls_dealloc, + srtp_aes_gcm_mbedtls_context_init, + srtp_aes_gcm_mbedtls_set_aad, + srtp_aes_gcm_mbedtls_encrypt, + srtp_aes_gcm_mbedtls_decrypt, + srtp_aes_gcm_mbedtls_set_iv, + srtp_aes_gcm_mbedtls_get_tag, + srtp_aes_gcm_128_mbedtls_description, + &srtp_aes_gcm_128_test_case_0, + SRTP_AES_GCM_128 +}; + +/* + * This is the vector function table for this crypto engine. + */ +const srtp_cipher_type_t srtp_aes_gcm_256 = { + srtp_aes_gcm_mbedtls_alloc, + srtp_aes_gcm_mbedtls_dealloc, + srtp_aes_gcm_mbedtls_context_init, + srtp_aes_gcm_mbedtls_set_aad, + srtp_aes_gcm_mbedtls_encrypt, + srtp_aes_gcm_mbedtls_decrypt, + srtp_aes_gcm_mbedtls_set_iv, + srtp_aes_gcm_mbedtls_get_tag, + srtp_aes_gcm_256_mbedtls_description, + &srtp_aes_gcm_256_test_case_0, + SRTP_AES_GCM_256 +}; diff --git a/third_party/libsrtp/src/crypto/cipher/aes_gcm_nss.c b/third_party/libsrtp/src/crypto/cipher/aes_gcm_nss.c new file mode 100644 index 0000000000..23b6e0946a --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_gcm_nss.c @@ -0,0 +1,442 @@ +/* + * aes_gcm_nss.c + * + * AES Galois Counter Mode + * + * Richard L. Barnes + * Cisco Systems, Inc. + * + */ + +/* + * + * Copyright (c) 2013-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "aes_gcm.h" +#include "alloc.h" +#include "err.h" /* for srtp_debug */ +#include "crypto_types.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" +#include <secerr.h> +#include <nspr.h> + +srtp_debug_module_t srtp_mod_aes_gcm = { + 0, /* debugging is off by default */ + "aes gcm nss" /* printable module name */ +}; + +/* + * For now we only support 8 and 16 octet tags. The spec allows for + * optional 12 byte tag, which may be supported in the future. + */ +#define GCM_IV_LEN 12 +#define GCM_AUTH_TAG_LEN 16 +#define GCM_AUTH_TAG_LEN_8 8 + +/* + * This function allocates a new instance of this crypto engine. + * The key_len parameter should be one of 28 or 44 for + * AES-128-GCM or AES-256-GCM respectively. Note that the + * key length includes the 14 byte salt value that is used when + * initializing the KDF. + */ +static srtp_err_status_t srtp_aes_gcm_nss_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + srtp_aes_gcm_ctx_t *gcm; + NSSInitContext *nss; + + debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d", + key_len); + debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen); + + /* + * Verify the key_len is valid for one of: AES-128/256 + */ + if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) { + return (srtp_err_status_bad_param); + } + + if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) { + return (srtp_err_status_bad_param); + } + + /* Initialize NSS equiv of NSS_NoDB_Init(NULL) */ + nss = NSS_InitContext("", "", "", "", NULL, + NSS_INIT_READONLY | NSS_INIT_NOCERTDB | + NSS_INIT_NOMODDB | NSS_INIT_FORCEOPEN | + NSS_INIT_OPTIMIZESPACE); + if (!nss) { + return (srtp_err_status_cipher_fail); + } + + /* allocate memory a cipher of type aes_gcm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + NSS_ShutdownContext(nss); + return (srtp_err_status_alloc_fail); + } + + gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t)); + if (gcm == NULL) { + NSS_ShutdownContext(nss); + srtp_crypto_free(*c); + *c = NULL; + return (srtp_err_status_alloc_fail); + } + + gcm->nss = nss; + + /* set pointers */ + (*c)->state = gcm; + + /* setup cipher attributes */ + switch (key_len) { + case SRTP_AES_GCM_128_KEY_LEN_WSALT: + (*c)->type = &srtp_aes_gcm_128; + (*c)->algorithm = SRTP_AES_GCM_128; + gcm->key_size = SRTP_AES_128_KEY_LEN; + gcm->tag_size = tlen; + gcm->params.ulTagBits = 8 * tlen; + break; + case SRTP_AES_GCM_256_KEY_LEN_WSALT: + (*c)->type = &srtp_aes_gcm_256; + (*c)->algorithm = SRTP_AES_GCM_256; + gcm->key_size = SRTP_AES_256_KEY_LEN; + gcm->tag_size = tlen; + gcm->params.ulTagBits = 8 * tlen; + break; + default: + /* this should never hit, but to be sure... */ + return (srtp_err_status_bad_param); + } + + /* set key size and tag size*/ + (*c)->key_len = key_len; + + return (srtp_err_status_ok); +} + +/* + * This function deallocates a GCM session + */ +static srtp_err_status_t srtp_aes_gcm_nss_dealloc(srtp_cipher_t *c) +{ + srtp_aes_gcm_ctx_t *ctx; + + ctx = (srtp_aes_gcm_ctx_t *)c->state; + if (ctx) { + /* release NSS resources */ + if (ctx->key) { + PK11_FreeSymKey(ctx->key); + } + + if (ctx->nss) { + NSS_ShutdownContext(ctx->nss); + ctx->nss = NULL; + } + + /* zeroize the key material */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free memory */ + srtp_crypto_free(c); + + return (srtp_err_status_ok); +} + +/* + * aes_gcm_nss_context_init(...) initializes the aes_gcm_context + * using the value in key[]. + * + * the key is the secret key + */ +static srtp_err_status_t srtp_aes_gcm_nss_context_init(void *cv, + const uint8_t *key) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + c->dir = srtp_direction_any; + + debug_print(srtp_mod_aes_gcm, "key: %s", + srtp_octet_string_hex_string(key, c->key_size)); + + if (c->key) { + PK11_FreeSymKey(c->key); + c->key = NULL; + } + + PK11SlotInfo *slot = PK11_GetBestSlot(CKM_AES_GCM, NULL); + if (!slot) { + return (srtp_err_status_cipher_fail); + } + + SECItem key_item = { siBuffer, (unsigned char *)key, c->key_size }; + c->key = PK11_ImportSymKey(slot, CKM_AES_GCM, PK11_OriginUnwrap, + CKA_ENCRYPT, &key_item, NULL); + PK11_FreeSlot(slot); + + if (!c->key) { + return (srtp_err_status_cipher_fail); + } + + return (srtp_err_status_ok); +} + +/* + * aes_gcm_nss_set_iv(c, iv) sets the counter value to the exor of iv with + * the offset + */ +static srtp_err_status_t srtp_aes_gcm_nss_set_iv( + void *cv, + uint8_t *iv, + srtp_cipher_direction_t direction) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + if (direction != srtp_direction_encrypt && + direction != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + c->dir = direction; + + debug_print(srtp_mod_aes_gcm, "setting iv: %s", + srtp_octet_string_hex_string(iv, GCM_IV_LEN)); + + memcpy(c->iv, iv, GCM_IV_LEN); + + return (srtp_err_status_ok); +} + +/* + * This function processes the AAD + * + * Parameters: + * c Crypto context + * aad Additional data to process for AEAD cipher suites + * aad_len length of aad buffer + */ +static srtp_err_status_t srtp_aes_gcm_nss_set_aad(void *cv, + const uint8_t *aad, + uint32_t aad_len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + debug_print(srtp_mod_aes_gcm, "setting AAD: %s", + srtp_octet_string_hex_string(aad, aad_len)); + + if (aad_len + c->aad_size > MAX_AD_SIZE) { + return srtp_err_status_bad_param; + } + + memcpy(c->aad + c->aad_size, aad, aad_len); + c->aad_size += aad_len; + + return (srtp_err_status_ok); +} + +static srtp_err_status_t srtp_aes_gcm_nss_do_crypto(void *cv, + int encrypt, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + c->params.pIv = c->iv; + c->params.ulIvLen = GCM_IV_LEN; + c->params.pAAD = c->aad; + c->params.ulAADLen = c->aad_size; + + // Reset AAD + c->aad_size = 0; + + int rv; + SECItem param = { siBuffer, (unsigned char *)&c->params, + sizeof(CK_GCM_PARAMS) }; + if (encrypt) { + rv = PK11_Encrypt(c->key, CKM_AES_GCM, ¶m, buf, enc_len, + *enc_len + 16, buf, *enc_len); + } else { + rv = PK11_Decrypt(c->key, CKM_AES_GCM, ¶m, buf, enc_len, *enc_len, + buf, *enc_len); + } + + srtp_err_status_t status = (srtp_err_status_ok); + if (rv != SECSuccess) { + status = (srtp_err_status_cipher_fail); + } + + return status; +} + +/* + * This function encrypts a buffer using AES GCM mode + * + * XXX(rlb@ipv.sx): We're required to break off and cache the tag + * here, because the get_tag() method is separate and the tests expect + * encrypt() not to change the size of the plaintext. It might be + * good to update the calling API so that this is cleaner. + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_nss_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + // When we get a non-NULL buffer, we know that the caller is + // prepared to also take the tag. When we get a NULL buffer, + // even though there's no data, we need to give NSS a buffer + // where it can write the tag. We can't just use c->tag because + // memcpy has undefined behavior on overlapping ranges. + unsigned char tagbuf[16]; + unsigned char *non_null_buf = buf; + if (!non_null_buf && (*enc_len == 0)) { + non_null_buf = tagbuf; + } else if (!non_null_buf) { + return srtp_err_status_bad_param; + } + + srtp_err_status_t status = + srtp_aes_gcm_nss_do_crypto(cv, 1, non_null_buf, enc_len); + if (status != srtp_err_status_ok) { + return status; + } + + memcpy(c->tag, non_null_buf + (*enc_len - c->tag_size), c->tag_size); + *enc_len -= c->tag_size; + return srtp_err_status_ok; +} + +/* + * This function calculates and returns the GCM tag for a given context. + * This should be called after encrypting the data. The *len value + * is increased by the tag size. The caller must ensure that *buf has + * enough room to accept the appended tag. + * + * Parameters: + * c Crypto context + * buf data to encrypt + * len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_nss_get_tag(void *cv, + uint8_t *buf, + uint32_t *len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + *len = c->tag_size; + memcpy(buf, c->tag, c->tag_size); + return (srtp_err_status_ok); +} + +/* + * This function decrypts a buffer using AES GCM mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_nss_decrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_err_status_t status = srtp_aes_gcm_nss_do_crypto(cv, 0, buf, enc_len); + if (status != srtp_err_status_ok) { + int err = PR_GetError(); + if (err == SEC_ERROR_BAD_DATA) { + status = srtp_err_status_auth_fail; + } + } + + return status; +} + +/* + * Name of this crypto engine + */ +static const char srtp_aes_gcm_128_nss_description[] = "AES-128 GCM using NSS"; +static const char srtp_aes_gcm_256_nss_description[] = "AES-256 GCM using NSS"; + +/* + * This is the vector function table for this crypto engine. + */ +/* clang-format off */ +const srtp_cipher_type_t srtp_aes_gcm_128 = { + srtp_aes_gcm_nss_alloc, + srtp_aes_gcm_nss_dealloc, + srtp_aes_gcm_nss_context_init, + srtp_aes_gcm_nss_set_aad, + srtp_aes_gcm_nss_encrypt, + srtp_aes_gcm_nss_decrypt, + srtp_aes_gcm_nss_set_iv, + srtp_aes_gcm_nss_get_tag, + srtp_aes_gcm_128_nss_description, + &srtp_aes_gcm_128_test_case_0, + SRTP_AES_GCM_128 +}; +/* clang-format on */ + +/* + * This is the vector function table for this crypto engine. + */ +/* clang-format off */ +const srtp_cipher_type_t srtp_aes_gcm_256 = { + srtp_aes_gcm_nss_alloc, + srtp_aes_gcm_nss_dealloc, + srtp_aes_gcm_nss_context_init, + srtp_aes_gcm_nss_set_aad, + srtp_aes_gcm_nss_encrypt, + srtp_aes_gcm_nss_decrypt, + srtp_aes_gcm_nss_set_iv, + srtp_aes_gcm_nss_get_tag, + srtp_aes_gcm_256_nss_description, + &srtp_aes_gcm_256_test_case_0, + SRTP_AES_GCM_256 +}; +/* clang-format on */ diff --git a/third_party/libsrtp/src/crypto/cipher/aes_gcm_ossl.c b/third_party/libsrtp/src/crypto/cipher/aes_gcm_ossl.c new file mode 100644 index 0000000000..3e2d6bb113 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_gcm_ossl.c @@ -0,0 +1,428 @@ +/* + * aes_gcm_ossl.c + * + * AES Galois Counter Mode + * + * John A. Foley + * Cisco Systems, Inc. + * + */ + +/* + * + * Copyright (c) 2013-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <openssl/evp.h> +#include "aes_gcm.h" +#include "alloc.h" +#include "err.h" /* for srtp_debug */ +#include "crypto_types.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" + +srtp_debug_module_t srtp_mod_aes_gcm = { + 0, /* debugging is off by default */ + "aes gcm" /* printable module name */ +}; + +/* + * For now we only support 8 and 16 octet tags. The spec allows for + * optional 12 byte tag, which may be supported in the future. + */ +#define GCM_AUTH_TAG_LEN 16 +#define GCM_AUTH_TAG_LEN_8 8 + +/* + * This function allocates a new instance of this crypto engine. + * The key_len parameter should be one of 28 or 44 for + * AES-128-GCM or AES-256-GCM respectively. Note that the + * key length includes the 14 byte salt value that is used when + * initializing the KDF. + */ +static srtp_err_status_t srtp_aes_gcm_openssl_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + srtp_aes_gcm_ctx_t *gcm; + + debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d", + key_len); + debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen); + + /* + * Verify the key_len is valid for one of: AES-128/256 + */ + if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) { + return (srtp_err_status_bad_param); + } + + if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) { + return (srtp_err_status_bad_param); + } + + /* allocate memory a cipher of type aes_gcm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + return (srtp_err_status_alloc_fail); + } + + gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t)); + if (gcm == NULL) { + srtp_crypto_free(*c); + *c = NULL; + return (srtp_err_status_alloc_fail); + } + + gcm->ctx = EVP_CIPHER_CTX_new(); + if (gcm->ctx == NULL) { + srtp_crypto_free(gcm); + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + /* set pointers */ + (*c)->state = gcm; + + /* setup cipher attributes */ + switch (key_len) { + case SRTP_AES_GCM_128_KEY_LEN_WSALT: + (*c)->type = &srtp_aes_gcm_128; + (*c)->algorithm = SRTP_AES_GCM_128; + gcm->key_size = SRTP_AES_128_KEY_LEN; + gcm->tag_len = tlen; + break; + case SRTP_AES_GCM_256_KEY_LEN_WSALT: + (*c)->type = &srtp_aes_gcm_256; + (*c)->algorithm = SRTP_AES_GCM_256; + gcm->key_size = SRTP_AES_256_KEY_LEN; + gcm->tag_len = tlen; + break; + } + + /* set key size */ + (*c)->key_len = key_len; + + return (srtp_err_status_ok); +} + +/* + * This function deallocates a GCM session + */ +static srtp_err_status_t srtp_aes_gcm_openssl_dealloc(srtp_cipher_t *c) +{ + srtp_aes_gcm_ctx_t *ctx; + + ctx = (srtp_aes_gcm_ctx_t *)c->state; + if (ctx) { + EVP_CIPHER_CTX_free(ctx->ctx); + /* zeroize the key material */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free memory */ + srtp_crypto_free(c); + + return (srtp_err_status_ok); +} + +/* + * aes_gcm_openssl_context_init(...) initializes the aes_gcm_context + * using the value in key[]. + * + * the key is the secret key + */ +static srtp_err_status_t srtp_aes_gcm_openssl_context_init(void *cv, + const uint8_t *key) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + const EVP_CIPHER *evp; + + c->dir = srtp_direction_any; + + debug_print(srtp_mod_aes_gcm, "key: %s", + srtp_octet_string_hex_string(key, c->key_size)); + + switch (c->key_size) { + case SRTP_AES_256_KEY_LEN: + evp = EVP_aes_256_gcm(); + break; + case SRTP_AES_128_KEY_LEN: + evp = EVP_aes_128_gcm(); + break; + default: + return (srtp_err_status_bad_param); + break; + } + + EVP_CIPHER_CTX_cleanup(c->ctx); + if (!EVP_CipherInit_ex(c->ctx, evp, NULL, key, NULL, 0)) { + return (srtp_err_status_init_fail); + } + + return (srtp_err_status_ok); +} + +/* + * aes_gcm_openssl_set_iv(c, iv) sets the counter value to the exor of iv with + * the offset + */ +static srtp_err_status_t srtp_aes_gcm_openssl_set_iv( + void *cv, + uint8_t *iv, + srtp_cipher_direction_t direction) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + + if (direction != srtp_direction_encrypt && + direction != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + c->dir = direction; + + debug_print(srtp_mod_aes_gcm, "setting iv: %s", + srtp_octet_string_hex_string(iv, 12)); + + if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) { + return (srtp_err_status_init_fail); + } + + if (!EVP_CipherInit_ex(c->ctx, NULL, NULL, NULL, iv, + (c->dir == srtp_direction_encrypt ? 1 : 0))) { + return (srtp_err_status_init_fail); + } + + return (srtp_err_status_ok); +} + +/* + * This function processes the AAD + * + * Parameters: + * c Crypto context + * aad Additional data to process for AEAD cipher suites + * aad_len length of aad buffer + */ +static srtp_err_status_t srtp_aes_gcm_openssl_set_aad(void *cv, + const uint8_t *aad, + uint32_t aad_len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + int rv; + + debug_print(srtp_mod_aes_gcm, "setting AAD: %s", + srtp_octet_string_hex_string(aad, aad_len)); + + /* + * EVP_CTRL_GCM_SET_TAG can only be used when decrypting + */ + if (c->dir == srtp_direction_decrypt) { + /* + * Set dummy tag, OpenSSL requires the Tag to be set before + * processing AAD + */ + + /* + * OpenSSL never write to address pointed by the last parameter of + * EVP_CIPHER_CTX_ctrl while EVP_CTRL_GCM_SET_TAG (in reality, + * OpenSSL copy its content to the context), so we can make + * aad read-only in this function and all its wrappers. + */ + unsigned char dummy_tag[GCM_AUTH_TAG_LEN]; + memset(dummy_tag, 0x0, GCM_AUTH_TAG_LEN); + if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, + &dummy_tag)) { + return (srtp_err_status_algo_fail); + } + } + + rv = EVP_Cipher(c->ctx, NULL, aad, aad_len); + if (rv != aad_len) { + return (srtp_err_status_algo_fail); + } else { + return (srtp_err_status_ok); + } +} + +/* + * This function encrypts a buffer using AES GCM mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_openssl_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + + /* + * Encrypt the data + */ + EVP_Cipher(c->ctx, buf, buf, *enc_len); + + return (srtp_err_status_ok); +} + +/* + * This function calculates and returns the GCM tag for a given context. + * This should be called after encrypting the data. The *len value + * is increased by the tag size. The caller must ensure that *buf has + * enough room to accept the appended tag. + * + * Parameters: + * c Crypto context + * buf data to encrypt + * len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_openssl_get_tag(void *cv, + uint8_t *buf, + uint32_t *len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + /* + * Calculate the tag + */ + EVP_Cipher(c->ctx, NULL, NULL, 0); + + /* + * Retreive the tag + */ + if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_GET_TAG, c->tag_len, buf)) { + return (srtp_err_status_algo_fail); + } + + /* + * Increase encryption length by desired tag size + */ + *len = c->tag_len; + + return (srtp_err_status_ok); +} + +/* + * This function decrypts a buffer using AES GCM mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_gcm_openssl_decrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv; + if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) { + return (srtp_err_status_bad_param); + } + + /* + * Set the tag before decrypting + */ + if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, + buf + (*enc_len - c->tag_len))) { + return (srtp_err_status_auth_fail); + } + EVP_Cipher(c->ctx, buf, buf, *enc_len - c->tag_len); + + /* + * Check the tag + */ + if (EVP_Cipher(c->ctx, NULL, NULL, 0)) { + return (srtp_err_status_auth_fail); + } + + /* + * Reduce the buffer size by the tag length since the tag + * is not part of the original payload + */ + *enc_len -= c->tag_len; + + return (srtp_err_status_ok); +} + +/* + * Name of this crypto engine + */ +static const char srtp_aes_gcm_128_openssl_description[] = + "AES-128 GCM using openssl"; +static const char srtp_aes_gcm_256_openssl_description[] = + "AES-256 GCM using openssl"; + +/* + * This is the vector function table for this crypto engine. + */ +const srtp_cipher_type_t srtp_aes_gcm_128 = { + srtp_aes_gcm_openssl_alloc, + srtp_aes_gcm_openssl_dealloc, + srtp_aes_gcm_openssl_context_init, + srtp_aes_gcm_openssl_set_aad, + srtp_aes_gcm_openssl_encrypt, + srtp_aes_gcm_openssl_decrypt, + srtp_aes_gcm_openssl_set_iv, + srtp_aes_gcm_openssl_get_tag, + srtp_aes_gcm_128_openssl_description, + &srtp_aes_gcm_128_test_case_0, + SRTP_AES_GCM_128 +}; + +/* + * This is the vector function table for this crypto engine. + */ +const srtp_cipher_type_t srtp_aes_gcm_256 = { + srtp_aes_gcm_openssl_alloc, + srtp_aes_gcm_openssl_dealloc, + srtp_aes_gcm_openssl_context_init, + srtp_aes_gcm_openssl_set_aad, + srtp_aes_gcm_openssl_encrypt, + srtp_aes_gcm_openssl_decrypt, + srtp_aes_gcm_openssl_set_iv, + srtp_aes_gcm_openssl_get_tag, + srtp_aes_gcm_256_openssl_description, + &srtp_aes_gcm_256_test_case_0, + SRTP_AES_GCM_256 +}; diff --git a/third_party/libsrtp/src/crypto/cipher/aes_icm.c b/third_party/libsrtp/src/crypto/cipher/aes_icm.c new file mode 100644 index 0000000000..e05d9e45a3 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_icm.c @@ -0,0 +1,433 @@ +/* + * aes_icm.c + * + * AES Integer Counter Mode + * + * David A. McGrew + * Cisco Systems, Inc. + */ + +/* + * + * Copyright (c) 2001-2017 Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#define ALIGN_32 0 + +#include "aes_icm.h" +#include "alloc.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" + +srtp_debug_module_t srtp_mod_aes_icm = { + 0, /* debugging is off by default */ + "aes icm" /* printable module name */ +}; + +/* + * integer counter mode works as follows: + * + * 16 bits + * <-----> + * +------+------+------+------+------+------+------+------+ + * | nonce | pakcet index | ctr |---+ + * +------+------+------+------+------+------+------+------+ | + * | + * +------+------+------+------+------+------+------+------+ v + * | salt |000000|->(+) + * +------+------+------+------+------+------+------+------+ | + * | + * +---------+ + * | encrypt | + * +---------+ + * | + * +------+------+------+------+------+------+------+------+ | + * | keystream block |<--+ + * +------+------+------+------+------+------+------+------+ + * + * All fields are big-endian + * + * ctr is the block counter, which increments from zero for + * each packet (16 bits wide) + * + * packet index is distinct for each packet (48 bits wide) + * + * nonce can be distinct across many uses of the same key, or + * can be a fixed value per key, or can be per-packet randomness + * (64 bits) + * + */ + +static srtp_err_status_t srtp_aes_icm_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + srtp_aes_icm_ctx_t *icm; + + debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d", + key_len); + + /* + * The check for key_len = 30/46 does not apply. Our usage + * of aes functions with key_len = values other than 30 + * has not broken anything. Don't know what would be the + * effect of skipping this check for srtp in general. + */ + if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) { + return srtp_err_status_bad_param; + } + + /* allocate memory a cipher of type aes_icm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + return srtp_err_status_alloc_fail; + } + + icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t)); + if (icm == NULL) { + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + /* set pointers */ + (*c)->state = icm; + + switch (key_len) { + case SRTP_AES_ICM_256_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_256; + (*c)->type = &srtp_aes_icm_256; + break; + default: + (*c)->algorithm = SRTP_AES_ICM_128; + (*c)->type = &srtp_aes_icm_128; + break; + } + + /* set key size */ + icm->key_size = key_len; + (*c)->key_len = key_len; + + return srtp_err_status_ok; +} + +static srtp_err_status_t srtp_aes_icm_dealloc(srtp_cipher_t *c) +{ + srtp_aes_icm_ctx_t *ctx; + + if (c == NULL) { + return srtp_err_status_bad_param; + } + + ctx = (srtp_aes_icm_ctx_t *)c->state; + if (ctx) { + /* zeroize the key material */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free the cipher context */ + srtp_crypto_free(c); + + return srtp_err_status_ok; +} + +/* + * aes_icm_context_init(...) initializes the aes_icm_context + * using the value in key[]. + * + * the key is the secret key + * + * the salt is unpredictable (but not necessarily secret) data which + * randomizes the starting point in the keystream + */ + +static srtp_err_status_t srtp_aes_icm_context_init(void *cv, const uint8_t *key) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + srtp_err_status_t status; + int base_key_len, copy_len; + + if (c->key_size == SRTP_AES_ICM_128_KEY_LEN_WSALT || + c->key_size == SRTP_AES_ICM_256_KEY_LEN_WSALT) { + base_key_len = c->key_size - SRTP_SALT_LEN; + } else { + return srtp_err_status_bad_param; + } + + /* + * set counter and initial values to 'offset' value, being careful not to + * go past the end of the key buffer + */ + v128_set_to_zero(&c->counter); + v128_set_to_zero(&c->offset); + + copy_len = c->key_size - base_key_len; + /* force last two octets of the offset to be left zero (for srtp + * compatibility) */ + if (copy_len > SRTP_SALT_LEN) { + copy_len = SRTP_SALT_LEN; + } + + memcpy(&c->counter, key + base_key_len, copy_len); + memcpy(&c->offset, key + base_key_len, copy_len); + + debug_print(srtp_mod_aes_icm, "key: %s", + srtp_octet_string_hex_string(key, base_key_len)); + debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset)); + + /* expand key */ + status = + srtp_aes_expand_encryption_key(key, base_key_len, &c->expanded_key); + if (status) { + v128_set_to_zero(&c->counter); + v128_set_to_zero(&c->offset); + return status; + } + + /* indicate that the keystream_buffer is empty */ + c->bytes_in_buffer = 0; + + return srtp_err_status_ok; +} + +/* + * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with + * the offset + */ + +static srtp_err_status_t srtp_aes_icm_set_iv(void *cv, + uint8_t *iv, + srtp_cipher_direction_t direction) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + v128_t nonce; + + /* set nonce (for alignment) */ + v128_copy_octet_string(&nonce, iv); + + debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce)); + + v128_xor(&c->counter, &c->offset, &nonce); + + debug_print(srtp_mod_aes_icm, "set_counter: %s", + v128_hex_string(&c->counter)); + + /* indicate that the keystream_buffer is empty */ + c->bytes_in_buffer = 0; + + return srtp_err_status_ok; +} + +/* + * aes_icm_advance(...) refills the keystream_buffer and + * advances the block index of the sicm_context forward by one + * + * this is an internal, hopefully inlined function + */ +static void srtp_aes_icm_advance(srtp_aes_icm_ctx_t *c) +{ + /* fill buffer with new keystream */ + v128_copy(&c->keystream_buffer, &c->counter); + srtp_aes_encrypt(&c->keystream_buffer, &c->expanded_key); + c->bytes_in_buffer = sizeof(v128_t); + + debug_print(srtp_mod_aes_icm, "counter: %s", + v128_hex_string(&c->counter)); + debug_print(srtp_mod_aes_icm, "ciphertext: %s", + v128_hex_string(&c->keystream_buffer)); + + /* clock counter forward */ + if (!++(c->counter.v8[15])) { + ++(c->counter.v8[14]); + } +} + +/* + * icm_encrypt deals with the following cases: + * + * bytes_to_encr < bytes_in_buffer + * - add keystream into data + * + * bytes_to_encr > bytes_in_buffer + * - add keystream into data until keystream_buffer is depleted + * - loop over blocks, filling keystream_buffer and then + * adding keystream into data + * - fill buffer then add in remaining (< 16) bytes of keystream + */ + +static srtp_err_status_t srtp_aes_icm_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + unsigned int bytes_to_encr = *enc_len; + unsigned int i; + uint32_t *b; + + /* check that there's enough segment left*/ + if ((bytes_to_encr + htons(c->counter.v16[7])) > 0xffff) { + return srtp_err_status_terminus; + } + + debug_print(srtp_mod_aes_icm, "block index: %d", htons(c->counter.v16[7])); + if (bytes_to_encr <= (unsigned int)c->bytes_in_buffer) { + /* deal with odd case of small bytes_to_encr */ + for (i = (sizeof(v128_t) - c->bytes_in_buffer); + i < (sizeof(v128_t) - c->bytes_in_buffer + bytes_to_encr); i++) { + *buf++ ^= c->keystream_buffer.v8[i]; + } + + c->bytes_in_buffer -= bytes_to_encr; + + /* return now to avoid the main loop */ + return srtp_err_status_ok; + + } else { + /* encrypt bytes until the remaining data is 16-byte aligned */ + for (i = (sizeof(v128_t) - c->bytes_in_buffer); i < sizeof(v128_t); + i++) { + *buf++ ^= c->keystream_buffer.v8[i]; + } + + bytes_to_encr -= c->bytes_in_buffer; + c->bytes_in_buffer = 0; + } + + /* now loop over entire 16-byte blocks of keystream */ + for (i = 0; i < (bytes_to_encr / sizeof(v128_t)); i++) { + /* fill buffer with new keystream */ + srtp_aes_icm_advance(c); + +/* + * add keystream into the data buffer (this would be a lot faster + * if we could assume 32-bit alignment!) + */ + +#if ALIGN_32 + b = (uint32_t *)buf; + *b++ ^= c->keystream_buffer.v32[0]; + *b++ ^= c->keystream_buffer.v32[1]; + *b++ ^= c->keystream_buffer.v32[2]; + *b++ ^= c->keystream_buffer.v32[3]; + buf = (uint8_t *)b; +#else + if ((((uintptr_t)buf) & 0x03) != 0) { + *buf++ ^= c->keystream_buffer.v8[0]; + *buf++ ^= c->keystream_buffer.v8[1]; + *buf++ ^= c->keystream_buffer.v8[2]; + *buf++ ^= c->keystream_buffer.v8[3]; + *buf++ ^= c->keystream_buffer.v8[4]; + *buf++ ^= c->keystream_buffer.v8[5]; + *buf++ ^= c->keystream_buffer.v8[6]; + *buf++ ^= c->keystream_buffer.v8[7]; + *buf++ ^= c->keystream_buffer.v8[8]; + *buf++ ^= c->keystream_buffer.v8[9]; + *buf++ ^= c->keystream_buffer.v8[10]; + *buf++ ^= c->keystream_buffer.v8[11]; + *buf++ ^= c->keystream_buffer.v8[12]; + *buf++ ^= c->keystream_buffer.v8[13]; + *buf++ ^= c->keystream_buffer.v8[14]; + *buf++ ^= c->keystream_buffer.v8[15]; + } else { + b = (uint32_t *)buf; + *b++ ^= c->keystream_buffer.v32[0]; + *b++ ^= c->keystream_buffer.v32[1]; + *b++ ^= c->keystream_buffer.v32[2]; + *b++ ^= c->keystream_buffer.v32[3]; + buf = (uint8_t *)b; + } +#endif /* #if ALIGN_32 */ + } + + /* if there is a tail end of the data, process it */ + if ((bytes_to_encr & 0xf) != 0) { + /* fill buffer with new keystream */ + srtp_aes_icm_advance(c); + + for (i = 0; i < (bytes_to_encr & 0xf); i++) { + *buf++ ^= c->keystream_buffer.v8[i]; + } + + /* reset the keystream buffer size to right value */ + c->bytes_in_buffer = sizeof(v128_t) - i; + } else { + /* no tail, so just reset the keystream buffer size to zero */ + c->bytes_in_buffer = 0; + } + + return srtp_err_status_ok; +} + +static const char srtp_aes_icm_128_description[] = + "AES-128 integer counter mode"; +static const char srtp_aes_icm_256_description[] = + "AES-256 integer counter mode"; + +/* + * note: the encrypt function is identical to the decrypt function + */ + +const srtp_cipher_type_t srtp_aes_icm_128 = { + srtp_aes_icm_alloc, /* */ + srtp_aes_icm_dealloc, /* */ + srtp_aes_icm_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_encrypt, /* */ + srtp_aes_icm_encrypt, /* */ + srtp_aes_icm_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_128_description, /* */ + &srtp_aes_icm_128_test_case_0, /* */ + SRTP_AES_ICM_128 /* */ +}; + +const srtp_cipher_type_t srtp_aes_icm_256 = { + srtp_aes_icm_alloc, /* */ + srtp_aes_icm_dealloc, /* */ + srtp_aes_icm_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_encrypt, /* */ + srtp_aes_icm_encrypt, /* */ + srtp_aes_icm_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_256_description, /* */ + &srtp_aes_icm_256_test_case_0, /* */ + SRTP_AES_ICM_256 /* */ +}; diff --git a/third_party/libsrtp/src/crypto/cipher/aes_icm_mbedtls.c b/third_party/libsrtp/src/crypto/cipher/aes_icm_mbedtls.c new file mode 100644 index 0000000000..9893ded702 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_icm_mbedtls.c @@ -0,0 +1,371 @@ +/* + * aes_icm_mbedtls.c + * + * AES Integer Counter Mode + * + * YongCheng Yang + */ + +/* + * + * Copyright (c) 2013-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <mbedtls/aes.h> +#include "aes_icm_ext.h" +#include "crypto_types.h" +#include "err.h" /* for srtp_debug */ +#include "alloc.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" + +srtp_debug_module_t srtp_mod_aes_icm = { + 0, /* debugging is off by default */ + "aes icm mbedtls" /* printable module name */ +}; + +/* + * integer counter mode works as follows: + * + * https://tools.ietf.org/html/rfc3711#section-4.1.1 + * + * E(k, IV) || E(k, IV + 1 mod 2^128) || E(k, IV + 2 mod 2^128) ... + * IV = (k_s * 2^16) XOR (SSRC * 2^64) XOR (i * 2^16) + * + * IV SHALL be defined by the SSRC, the SRTP packet index i, + * and the SRTP session salting key k_s. + * + * SSRC: 32bits. + * Sequence number: 16bits. + * nonce is 64bits. . + * packet index = ROC || SEQ. (ROC: Rollover counter) + * + * 16 bits + * <-----> + * +------+------+------+------+------+------+------+------+ + * | nonce | packet index | ctr |---+ + * +------+------+------+------+------+------+------+------+ | + * | + * +------+------+------+------+------+------+------+------+ v + * | salt |000000|->(+) + * +------+------+------+------+------+------+------+------+ | + * | + * +---------+ + * | encrypt | + * +---------+ + * | + * +------+------+------+------+------+------+------+------+ | + * | keystream block |<--+ + * +------+------+------+------+------+------+------+------+ + * + * All fields are big-endian + * + * ctr is the block counter, which increments from zero for + * each packet (16 bits wide) + * + * packet index is distinct for each packet (48 bits wide) + * + * nonce can be distinct across many uses of the same key, or + * can be a fixed value per key, or can be per-packet randomness + * (64 bits) + * + */ + +/* + * This function allocates a new instance of this crypto engine. + * The key_len parameter should be one of 30, 38, or 46 for + * AES-128, AES-192, and AES-256 respectively. Note, this key_len + * value is inflated, as it also accounts for the 112 bit salt + * value. The tlen argument is for the AEAD tag length, which + * isn't used in counter mode. + */ +static srtp_err_status_t srtp_aes_icm_mbedtls_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + srtp_aes_icm_ctx_t *icm; + + debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d", + key_len); + + /* + * Verify the key_len is valid for one of: AES-128/192/256 + */ + if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) { + return srtp_err_status_bad_param; + } + + /* allocate memory a cipher of type aes_icm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + return srtp_err_status_alloc_fail; + } + + icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t)); + if (icm == NULL) { + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + icm->ctx = + (mbedtls_aes_context *)srtp_crypto_alloc(sizeof(mbedtls_aes_context)); + if (icm->ctx == NULL) { + srtp_crypto_free(icm); + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + mbedtls_aes_init(icm->ctx); + + /* set pointers */ + (*c)->state = icm; + + /* setup cipher parameters */ + switch (key_len) { + case SRTP_AES_ICM_128_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_128; + (*c)->type = &srtp_aes_icm_128; + icm->key_size = SRTP_AES_128_KEY_LEN; + break; + case SRTP_AES_ICM_192_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_192; + (*c)->type = &srtp_aes_icm_192; + icm->key_size = SRTP_AES_192_KEY_LEN; + break; + case SRTP_AES_ICM_256_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_256; + (*c)->type = &srtp_aes_icm_256; + icm->key_size = SRTP_AES_256_KEY_LEN; + break; + } + + /* set key size */ + (*c)->key_len = key_len; + + return srtp_err_status_ok; +} + +/* + * This function deallocates an instance of this engine + */ +static srtp_err_status_t srtp_aes_icm_mbedtls_dealloc(srtp_cipher_t *c) +{ + srtp_aes_icm_ctx_t *ctx; + + if (c == NULL) { + return srtp_err_status_bad_param; + } + + /* + * Free the aes context + */ + ctx = (srtp_aes_icm_ctx_t *)c->state; + if (ctx != NULL) { + mbedtls_aes_free(ctx->ctx); + srtp_crypto_free(ctx->ctx); + /* zeroize the key material */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free memory */ + srtp_crypto_free(c); + + return srtp_err_status_ok; +} + +static srtp_err_status_t srtp_aes_icm_mbedtls_context_init(void *cv, + const uint8_t *key) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + uint32_t key_size_in_bits = (c->key_size << 3); + int errcode = 0; + + /* + * set counter and initial values to 'offset' value, being careful not to + * go past the end of the key buffer + */ + v128_set_to_zero(&c->counter); + v128_set_to_zero(&c->offset); + memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN); + memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN); + + /* force last two octets of the offset to zero (for srtp compatibility) */ + c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0; + c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0; + debug_print(srtp_mod_aes_icm, "key: %s", + srtp_octet_string_hex_string(key, c->key_size)); + debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset)); + + switch (c->key_size) { + case SRTP_AES_256_KEY_LEN: + case SRTP_AES_192_KEY_LEN: + case SRTP_AES_128_KEY_LEN: + break; + default: + return srtp_err_status_bad_param; + break; + } + + errcode = mbedtls_aes_setkey_enc(c->ctx, key, key_size_in_bits); + if (errcode != 0) { + debug_print(srtp_mod_aes_icm, "errCode: %d", errcode); + } + + return srtp_err_status_ok; +} + +/* + * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with + * the offset + */ +static srtp_err_status_t srtp_aes_icm_mbedtls_set_iv( + void *cv, + uint8_t *iv, + srtp_cipher_direction_t dir) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + v128_t nonce; + c->nc_off = 0; + /* set nonce (for alignment) */ + v128_copy_octet_string(&nonce, iv); + + debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce)); + + v128_xor(&c->counter, &c->offset, &nonce); + + debug_print(srtp_mod_aes_icm, "set_counter: %s", + v128_hex_string(&c->counter)); + + return srtp_err_status_ok; +} + +/* + * This function encrypts a buffer using AES CTR mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_icm_mbedtls_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + + int errCode = 0; + debug_print(srtp_mod_aes_icm, "rs0: %s", v128_hex_string(&c->counter)); + + errCode = + mbedtls_aes_crypt_ctr(c->ctx, *enc_len, &(c->nc_off), c->counter.v8, + c->stream_block.v8, buf, buf); + if (errCode != 0) { + debug_print(srtp_mod_aes_icm, "encrypt error: %d", errCode); + return srtp_err_status_cipher_fail; + } + + return srtp_err_status_ok; +} + +/* + * Name of this crypto engine + */ +static const char srtp_aes_icm_128_mbedtls_description[] = + "AES-128 counter mode using mbedtls"; +static const char srtp_aes_icm_192_mbedtls_description[] = + "AES-192 counter mode using mbedtls"; +static const char srtp_aes_icm_256_mbedtls_description[] = + "AES-256 counter mode using mbedtls"; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_128 = { + srtp_aes_icm_mbedtls_alloc, /* */ + srtp_aes_icm_mbedtls_dealloc, /* */ + srtp_aes_icm_mbedtls_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_mbedtls_encrypt, /* */ + srtp_aes_icm_mbedtls_encrypt, /* */ + srtp_aes_icm_mbedtls_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_128_mbedtls_description, /* */ + &srtp_aes_icm_128_test_case_0, /* */ + SRTP_AES_ICM_128 /* */ +}; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_192 = { + srtp_aes_icm_mbedtls_alloc, /* */ + srtp_aes_icm_mbedtls_dealloc, /* */ + srtp_aes_icm_mbedtls_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_mbedtls_encrypt, /* */ + srtp_aes_icm_mbedtls_encrypt, /* */ + srtp_aes_icm_mbedtls_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_192_mbedtls_description, /* */ + &srtp_aes_icm_192_test_case_0, /* */ + SRTP_AES_ICM_192 /* */ +}; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_256 = { + srtp_aes_icm_mbedtls_alloc, /* */ + srtp_aes_icm_mbedtls_dealloc, /* */ + srtp_aes_icm_mbedtls_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_mbedtls_encrypt, /* */ + srtp_aes_icm_mbedtls_encrypt, /* */ + srtp_aes_icm_mbedtls_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_256_mbedtls_description, /* */ + &srtp_aes_icm_256_test_case_0, /* */ + SRTP_AES_ICM_256 /* */ +}; diff --git a/third_party/libsrtp/src/crypto/cipher/aes_icm_nss.c b/third_party/libsrtp/src/crypto/cipher/aes_icm_nss.c new file mode 100644 index 0000000000..04323b4fef --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_icm_nss.c @@ -0,0 +1,404 @@ +/* + * aes_icm_nss.c + * + * AES Integer Counter Mode + * + * Richard L. Barnes + * Cisco Systems, Inc. + */ + +/* + * + * Copyright (c) 2013-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "aes_icm_ext.h" +#include "crypto_types.h" +#include "err.h" /* for srtp_debug */ +#include "alloc.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" + +srtp_debug_module_t srtp_mod_aes_icm = { + 0, /* debugging is off by default */ + "aes icm nss" /* printable module name */ +}; + +/* + * integer counter mode works as follows: + * + * 16 bits + * <-----> + * +------+------+------+------+------+------+------+------+ + * | nonce | packet index | ctr |---+ + * +------+------+------+------+------+------+------+------+ | + * | + * +------+------+------+------+------+------+------+------+ v + * | salt |000000|->(+) + * +------+------+------+------+------+------+------+------+ | + * | + * +---------+ + * | encrypt | + * +---------+ + * | + * +------+------+------+------+------+------+------+------+ | + * | keystream block |<--+ + * +------+------+------+------+------+------+------+------+ + * + * All fields are big-endian + * + * ctr is the block counter, which increments from zero for + * each packet (16 bits wide) + * + * packet index is distinct for each packet (48 bits wide) + * + * nonce can be distinct across many uses of the same key, or + * can be a fixed value per key, or can be per-packet randomness + * (64 bits) + * + */ + +/* + * This function allocates a new instance of this crypto engine. + * The key_len parameter should be one of 30, 38, or 46 for + * AES-128, AES-192, and AES-256 respectively. Note, this key_len + * value is inflated, as it also accounts for the 112 bit salt + * value. The tlen argument is for the AEAD tag length, which + * isn't used in counter mode. + */ +static srtp_err_status_t srtp_aes_icm_nss_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + srtp_aes_icm_ctx_t *icm; + NSSInitContext *nss; + + debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d", + key_len); + + /* + * Verify the key_len is valid for one of: AES-128/192/256 + */ + if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) { + return srtp_err_status_bad_param; + } + + /* Initialize NSS equiv of NSS_NoDB_Init(NULL) */ + nss = NSS_InitContext("", "", "", "", NULL, + NSS_INIT_READONLY | NSS_INIT_NOCERTDB | + NSS_INIT_NOMODDB | NSS_INIT_FORCEOPEN | + NSS_INIT_OPTIMIZESPACE); + if (!nss) { + return (srtp_err_status_cipher_fail); + } + + /* allocate memory a cipher of type aes_icm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + NSS_ShutdownContext(nss); + return srtp_err_status_alloc_fail; + } + + icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t)); + if (icm == NULL) { + NSS_ShutdownContext(nss); + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + icm->key = NULL; + icm->ctx = NULL; + icm->nss = nss; + + /* set pointers */ + (*c)->state = icm; + + /* setup cipher parameters */ + switch (key_len) { + case SRTP_AES_ICM_128_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_128; + (*c)->type = &srtp_aes_icm_128; + icm->key_size = SRTP_AES_128_KEY_LEN; + break; + case SRTP_AES_ICM_192_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_192; + (*c)->type = &srtp_aes_icm_192; + icm->key_size = SRTP_AES_192_KEY_LEN; + break; + case SRTP_AES_ICM_256_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_256; + (*c)->type = &srtp_aes_icm_256; + icm->key_size = SRTP_AES_256_KEY_LEN; + break; + } + + /* set key size */ + (*c)->key_len = key_len; + + return srtp_err_status_ok; +} + +/* + * This function deallocates an instance of this engine + */ +static srtp_err_status_t srtp_aes_icm_nss_dealloc(srtp_cipher_t *c) +{ + srtp_aes_icm_ctx_t *ctx; + + ctx = (srtp_aes_icm_ctx_t *)c->state; + if (ctx) { + /* free any PK11 values that have been created */ + if (ctx->key) { + PK11_FreeSymKey(ctx->key); + ctx->key = NULL; + } + + if (ctx->ctx) { + PK11_DestroyContext(ctx->ctx, PR_TRUE); + ctx->ctx = NULL; + } + + if (ctx->nss) { + NSS_ShutdownContext(ctx->nss); + ctx->nss = NULL; + } + + /* zeroize everything */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free memory */ + srtp_crypto_free(c); + + return (srtp_err_status_ok); +} + +/* + * aes_icm_nss_context_init(...) initializes the aes_icm_context + * using the value in key[]. + * + * the key is the secret key + * + * the salt is unpredictable (but not necessarily secret) data which + * randomizes the starting point in the keystream + */ +static srtp_err_status_t srtp_aes_icm_nss_context_init(void *cv, + const uint8_t *key) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + + /* + * set counter and initial values to 'offset' value, being careful not to + * go past the end of the key buffer + */ + v128_set_to_zero(&c->counter); + v128_set_to_zero(&c->offset); + memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN); + memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN); + + /* force last two octets of the offset to zero (for srtp compatibility) */ + c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0; + c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0; + + debug_print(srtp_mod_aes_icm, "key: %s", + srtp_octet_string_hex_string(key, c->key_size)); + debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset)); + + if (c->key) { + PK11_FreeSymKey(c->key); + c->key = NULL; + } + + PK11SlotInfo *slot = PK11_GetBestSlot(CKM_AES_CTR, NULL); + if (!slot) { + return srtp_err_status_bad_param; + } + + SECItem keyItem = { siBuffer, (unsigned char *)key, c->key_size }; + c->key = PK11_ImportSymKey(slot, CKM_AES_CTR, PK11_OriginUnwrap, + CKA_ENCRYPT, &keyItem, NULL); + PK11_FreeSlot(slot); + + if (!c->key) { + return srtp_err_status_cipher_fail; + } + + return (srtp_err_status_ok); +} + +/* + * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with + * the offset + */ +static srtp_err_status_t srtp_aes_icm_nss_set_iv(void *cv, + uint8_t *iv, + srtp_cipher_direction_t dir) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + v128_t nonce; + + /* set nonce (for alignment) */ + v128_copy_octet_string(&nonce, iv); + + debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce)); + + v128_xor(&c->counter, &c->offset, &nonce); + + debug_print(srtp_mod_aes_icm, "set_counter: %s", + v128_hex_string(&c->counter)); + + /* set up the PK11 context now that we have all the info */ + CK_AES_CTR_PARAMS param; + param.ulCounterBits = 16; + memcpy(param.cb, &c->counter, 16); + + if (!c->key) { + return srtp_err_status_bad_param; + } + + if (c->ctx) { + PK11_DestroyContext(c->ctx, PR_TRUE); + } + + SECItem paramItem = { siBuffer, (unsigned char *)¶m, + sizeof(CK_AES_CTR_PARAMS) }; + c->ctx = PK11_CreateContextBySymKey(CKM_AES_CTR, CKA_ENCRYPT, c->key, + ¶mItem); + if (!c->ctx) { + return srtp_err_status_cipher_fail; + } + + return srtp_err_status_ok; +} + +/* + * This function encrypts a buffer using AES CTR mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_icm_nss_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + + if (!c->ctx) { + return srtp_err_status_bad_param; + } + + int rv = + PK11_CipherOp(c->ctx, buf, (int *)enc_len, *enc_len, buf, *enc_len); + + srtp_err_status_t status = (srtp_err_status_ok); + if (rv != SECSuccess) { + status = (srtp_err_status_cipher_fail); + } + + return status; +} + +/* + * Name of this crypto engine + */ +static const char srtp_aes_icm_128_nss_description[] = + "AES-128 counter mode using NSS"; +static const char srtp_aes_icm_192_nss_description[] = + "AES-192 counter mode using NSS"; +static const char srtp_aes_icm_256_nss_description[] = + "AES-256 counter mode using NSS"; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_128 = { + srtp_aes_icm_nss_alloc, /* */ + srtp_aes_icm_nss_dealloc, /* */ + srtp_aes_icm_nss_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_nss_encrypt, /* */ + srtp_aes_icm_nss_encrypt, /* */ + srtp_aes_icm_nss_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_128_nss_description, /* */ + &srtp_aes_icm_128_test_case_0, /* */ + SRTP_AES_ICM_128 /* */ +}; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_192 = { + srtp_aes_icm_nss_alloc, /* */ + srtp_aes_icm_nss_dealloc, /* */ + srtp_aes_icm_nss_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_nss_encrypt, /* */ + srtp_aes_icm_nss_encrypt, /* */ + srtp_aes_icm_nss_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_192_nss_description, /* */ + &srtp_aes_icm_192_test_case_0, /* */ + SRTP_AES_ICM_192 /* */ +}; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_256 = { + srtp_aes_icm_nss_alloc, /* */ + srtp_aes_icm_nss_dealloc, /* */ + srtp_aes_icm_nss_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_nss_encrypt, /* */ + srtp_aes_icm_nss_encrypt, /* */ + srtp_aes_icm_nss_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_256_nss_description, /* */ + &srtp_aes_icm_256_test_case_0, /* */ + SRTP_AES_ICM_256 /* */ +}; diff --git a/third_party/libsrtp/src/crypto/cipher/aes_icm_ossl.c b/third_party/libsrtp/src/crypto/cipher/aes_icm_ossl.c new file mode 100644 index 0000000000..f960a33ecf --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/aes_icm_ossl.c @@ -0,0 +1,383 @@ +/* + * aes_icm_ossl.c + * + * AES Integer Counter Mode + * + * John A. Foley + * Cisco Systems, Inc. + * + * 2/24/2012: This module was modified to use CiscoSSL for AES counter + * mode. Eddy Lem contributed the code to allow this. + * + * 12/20/2012: Added support for AES-192 and AES-256. + */ + +/* + * + * Copyright (c) 2013-2017, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <openssl/evp.h> +#include "aes_icm_ext.h" +#include "crypto_types.h" +#include "err.h" /* for srtp_debug */ +#include "alloc.h" +#include "cipher_types.h" +#include "cipher_test_cases.h" + +srtp_debug_module_t srtp_mod_aes_icm = { + 0, /* debugging is off by default */ + "aes icm ossl" /* printable module name */ +}; + +/* + * integer counter mode works as follows: + * + * 16 bits + * <-----> + * +------+------+------+------+------+------+------+------+ + * | nonce | packet index | ctr |---+ + * +------+------+------+------+------+------+------+------+ | + * | + * +------+------+------+------+------+------+------+------+ v + * | salt |000000|->(+) + * +------+------+------+------+------+------+------+------+ | + * | + * +---------+ + * | encrypt | + * +---------+ + * | + * +------+------+------+------+------+------+------+------+ | + * | keystream block |<--+ + * +------+------+------+------+------+------+------+------+ + * + * All fields are big-endian + * + * ctr is the block counter, which increments from zero for + * each packet (16 bits wide) + * + * packet index is distinct for each packet (48 bits wide) + * + * nonce can be distinct across many uses of the same key, or + * can be a fixed value per key, or can be per-packet randomness + * (64 bits) + * + */ + +/* + * This function allocates a new instance of this crypto engine. + * The key_len parameter should be one of 30, 38, or 46 for + * AES-128, AES-192, and AES-256 respectively. Note, this key_len + * value is inflated, as it also accounts for the 112 bit salt + * value. The tlen argument is for the AEAD tag length, which + * isn't used in counter mode. + */ +static srtp_err_status_t srtp_aes_icm_openssl_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + srtp_aes_icm_ctx_t *icm; + + debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d", + key_len); + + /* + * Verify the key_len is valid for one of: AES-128/192/256 + */ + if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT && + key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) { + return srtp_err_status_bad_param; + } + + /* allocate memory a cipher of type aes_icm */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + return srtp_err_status_alloc_fail; + } + + icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t)); + if (icm == NULL) { + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + icm->ctx = EVP_CIPHER_CTX_new(); + if (icm->ctx == NULL) { + srtp_crypto_free(icm); + srtp_crypto_free(*c); + *c = NULL; + return srtp_err_status_alloc_fail; + } + + /* set pointers */ + (*c)->state = icm; + + /* setup cipher parameters */ + switch (key_len) { + case SRTP_AES_ICM_128_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_128; + (*c)->type = &srtp_aes_icm_128; + icm->key_size = SRTP_AES_128_KEY_LEN; + break; + case SRTP_AES_ICM_192_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_192; + (*c)->type = &srtp_aes_icm_192; + icm->key_size = SRTP_AES_192_KEY_LEN; + break; + case SRTP_AES_ICM_256_KEY_LEN_WSALT: + (*c)->algorithm = SRTP_AES_ICM_256; + (*c)->type = &srtp_aes_icm_256; + icm->key_size = SRTP_AES_256_KEY_LEN; + break; + } + + /* set key size */ + (*c)->key_len = key_len; + + return srtp_err_status_ok; +} + +/* + * This function deallocates an instance of this engine + */ +static srtp_err_status_t srtp_aes_icm_openssl_dealloc(srtp_cipher_t *c) +{ + srtp_aes_icm_ctx_t *ctx; + + if (c == NULL) { + return srtp_err_status_bad_param; + } + + /* + * Free the EVP context + */ + ctx = (srtp_aes_icm_ctx_t *)c->state; + if (ctx != NULL) { + EVP_CIPHER_CTX_free(ctx->ctx); + /* zeroize the key material */ + octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t)); + srtp_crypto_free(ctx); + } + + /* free memory */ + srtp_crypto_free(c); + + return srtp_err_status_ok; +} + +/* + * aes_icm_openssl_context_init(...) initializes the aes_icm_context + * using the value in key[]. + * + * the key is the secret key + * + * the salt is unpredictable (but not necessarily secret) data which + * randomizes the starting point in the keystream + */ +static srtp_err_status_t srtp_aes_icm_openssl_context_init(void *cv, + const uint8_t *key) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + const EVP_CIPHER *evp; + + /* + * set counter and initial values to 'offset' value, being careful not to + * go past the end of the key buffer + */ + v128_set_to_zero(&c->counter); + v128_set_to_zero(&c->offset); + memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN); + memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN); + + /* force last two octets of the offset to zero (for srtp compatibility) */ + c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0; + c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0; + + debug_print(srtp_mod_aes_icm, "key: %s", + srtp_octet_string_hex_string(key, c->key_size)); + debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset)); + + switch (c->key_size) { + case SRTP_AES_256_KEY_LEN: + evp = EVP_aes_256_ctr(); + break; + case SRTP_AES_192_KEY_LEN: + evp = EVP_aes_192_ctr(); + break; + case SRTP_AES_128_KEY_LEN: + evp = EVP_aes_128_ctr(); + break; + default: + return srtp_err_status_bad_param; + break; + } + + EVP_CIPHER_CTX_cleanup(c->ctx); + if (!EVP_EncryptInit_ex(c->ctx, evp, NULL, key, NULL)) { + return srtp_err_status_fail; + } else { + return srtp_err_status_ok; + } + + return srtp_err_status_ok; +} + +/* + * aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with + * the offset + */ +static srtp_err_status_t srtp_aes_icm_openssl_set_iv( + void *cv, + uint8_t *iv, + srtp_cipher_direction_t dir) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + v128_t nonce; + + /* set nonce (for alignment) */ + v128_copy_octet_string(&nonce, iv); + + debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce)); + + v128_xor(&c->counter, &c->offset, &nonce); + + debug_print(srtp_mod_aes_icm, "set_counter: %s", + v128_hex_string(&c->counter)); + + if (!EVP_EncryptInit_ex(c->ctx, NULL, NULL, NULL, c->counter.v8)) { + return srtp_err_status_fail; + } else { + return srtp_err_status_ok; + } +} + +/* + * This function encrypts a buffer using AES CTR mode + * + * Parameters: + * c Crypto context + * buf data to encrypt + * enc_len length of encrypt buffer + */ +static srtp_err_status_t srtp_aes_icm_openssl_encrypt(void *cv, + unsigned char *buf, + unsigned int *enc_len) +{ + srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv; + int len = 0; + + debug_print(srtp_mod_aes_icm, "rs0: %s", v128_hex_string(&c->counter)); + + if (!EVP_EncryptUpdate(c->ctx, buf, &len, buf, *enc_len)) { + return srtp_err_status_cipher_fail; + } + *enc_len = len; + + if (!EVP_EncryptFinal_ex(c->ctx, buf + len, &len)) { + return srtp_err_status_cipher_fail; + } + *enc_len += len; + + return srtp_err_status_ok; +} + +/* + * Name of this crypto engine + */ +static const char srtp_aes_icm_128_openssl_description[] = + "AES-128 counter mode using openssl"; +static const char srtp_aes_icm_192_openssl_description[] = + "AES-192 counter mode using openssl"; +static const char srtp_aes_icm_256_openssl_description[] = + "AES-256 counter mode using openssl"; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_128 = { + srtp_aes_icm_openssl_alloc, /* */ + srtp_aes_icm_openssl_dealloc, /* */ + srtp_aes_icm_openssl_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_openssl_encrypt, /* */ + srtp_aes_icm_openssl_encrypt, /* */ + srtp_aes_icm_openssl_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_128_openssl_description, /* */ + &srtp_aes_icm_128_test_case_0, /* */ + SRTP_AES_ICM_128 /* */ +}; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_192 = { + srtp_aes_icm_openssl_alloc, /* */ + srtp_aes_icm_openssl_dealloc, /* */ + srtp_aes_icm_openssl_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_openssl_encrypt, /* */ + srtp_aes_icm_openssl_encrypt, /* */ + srtp_aes_icm_openssl_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_192_openssl_description, /* */ + &srtp_aes_icm_192_test_case_0, /* */ + SRTP_AES_ICM_192 /* */ +}; + +/* + * This is the function table for this crypto engine. + * note: the encrypt function is identical to the decrypt function + */ +const srtp_cipher_type_t srtp_aes_icm_256 = { + srtp_aes_icm_openssl_alloc, /* */ + srtp_aes_icm_openssl_dealloc, /* */ + srtp_aes_icm_openssl_context_init, /* */ + 0, /* set_aad */ + srtp_aes_icm_openssl_encrypt, /* */ + srtp_aes_icm_openssl_encrypt, /* */ + srtp_aes_icm_openssl_set_iv, /* */ + 0, /* get_tag */ + srtp_aes_icm_256_openssl_description, /* */ + &srtp_aes_icm_256_test_case_0, /* */ + SRTP_AES_ICM_256 /* */ +}; diff --git a/third_party/libsrtp/src/crypto/cipher/cipher.c b/third_party/libsrtp/src/crypto/cipher/cipher.c new file mode 100644 index 0000000000..de93bc90d8 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/cipher.c @@ -0,0 +1,664 @@ +/* + * cipher.c + * + * cipher meta-functions + * + * David A. McGrew + * Cisco Systems, Inc. + * + */ + +/* + * + * Copyright (c) 2001-2017 Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "cipher.h" +#include "cipher_priv.h" +#include "crypto_types.h" +#include "err.h" /* for srtp_debug */ +#include "alloc.h" /* for crypto_alloc(), crypto_free() */ + +srtp_debug_module_t srtp_mod_cipher = { + 0, /* debugging is off by default */ + "cipher" /* printable module name */ +}; + +srtp_err_status_t srtp_cipher_type_alloc(const srtp_cipher_type_t *ct, + srtp_cipher_t **c, + int key_len, + int tlen) +{ + if (!ct || !ct->alloc) { + return (srtp_err_status_bad_param); + } + return ((ct)->alloc((c), (key_len), (tlen))); +} + +srtp_err_status_t srtp_cipher_dealloc(srtp_cipher_t *c) +{ + if (!c || !c->type) { + return (srtp_err_status_bad_param); + } + return (((c)->type)->dealloc(c)); +} + +srtp_err_status_t srtp_cipher_init(srtp_cipher_t *c, const uint8_t *key) +{ + if (!c || !c->type || !c->state) { + return (srtp_err_status_bad_param); + } + return (((c)->type)->init(((c)->state), (key))); +} + +srtp_err_status_t srtp_cipher_set_iv(srtp_cipher_t *c, + uint8_t *iv, + int direction) +{ + if (!c || !c->type || !c->state) { + return (srtp_err_status_bad_param); + } + + return (((c)->type)->set_iv(((c)->state), iv, direction)); +} + +srtp_err_status_t srtp_cipher_output(srtp_cipher_t *c, + uint8_t *buffer, + uint32_t *num_octets_to_output) +{ + /* zeroize the buffer */ + octet_string_set_to_zero(buffer, *num_octets_to_output); + + /* exor keystream into buffer */ + return (((c)->type)->encrypt(((c)->state), buffer, num_octets_to_output)); +} + +srtp_err_status_t srtp_cipher_encrypt(srtp_cipher_t *c, + uint8_t *buffer, + uint32_t *num_octets_to_output) +{ + if (!c || !c->type || !c->state) { + return (srtp_err_status_bad_param); + } + + return (((c)->type)->encrypt(((c)->state), buffer, num_octets_to_output)); +} + +srtp_err_status_t srtp_cipher_decrypt(srtp_cipher_t *c, + uint8_t *buffer, + uint32_t *num_octets_to_output) +{ + if (!c || !c->type || !c->state) { + return (srtp_err_status_bad_param); + } + + return (((c)->type)->decrypt(((c)->state), buffer, num_octets_to_output)); +} + +srtp_err_status_t srtp_cipher_get_tag(srtp_cipher_t *c, + uint8_t *buffer, + uint32_t *tag_len) +{ + if (!c || !c->type || !c->state) { + return (srtp_err_status_bad_param); + } + if (!((c)->type)->get_tag) { + return (srtp_err_status_no_such_op); + } + + return (((c)->type)->get_tag(((c)->state), buffer, tag_len)); +} + +srtp_err_status_t srtp_cipher_set_aad(srtp_cipher_t *c, + const uint8_t *aad, + uint32_t aad_len) +{ + if (!c || !c->type || !c->state) { + return (srtp_err_status_bad_param); + } + if (!((c)->type)->set_aad) { + return (srtp_err_status_no_such_op); + } + + return (((c)->type)->set_aad(((c)->state), aad, aad_len)); +} + +/* some bookkeeping functions */ + +int srtp_cipher_get_key_length(const srtp_cipher_t *c) +{ + return c->key_len; +} + +/* + * A trivial platform independent random source. + * For use in test only. + */ +void srtp_cipher_rand_for_tests(void *dest, uint32_t len) +{ + /* Generic C-library (rand()) version */ + /* This is a random source of last resort */ + uint8_t *dst = (uint8_t *)dest; + while (len) { + int val = rand(); + /* rand() returns 0-32767 (ugh) */ + /* Is this a good enough way to get random bytes? + It is if it passes FIPS-140... */ + *dst++ = val & 0xff; + len--; + } +} + +/* + * A trivial platform independent 32 bit random number. + * For use in test only. + */ +uint32_t srtp_cipher_rand_u32_for_tests(void) +{ + uint32_t r; + srtp_cipher_rand_for_tests(&r, sizeof(r)); + return r; +} + +#define SELF_TEST_BUF_OCTETS 128 +#define NUM_RAND_TESTS 128 +#define MAX_KEY_LEN 64 +/* + * srtp_cipher_type_test(ct, test_data) tests a cipher of type ct against + * test cases provided in a list test_data of values of key, salt, iv, + * plaintext, and ciphertext that is known to be good + */ +srtp_err_status_t srtp_cipher_type_test( + const srtp_cipher_type_t *ct, + const srtp_cipher_test_case_t *test_data) +{ + const srtp_cipher_test_case_t *test_case = test_data; + srtp_cipher_t *c; + srtp_err_status_t status; + uint8_t buffer[SELF_TEST_BUF_OCTETS]; + uint8_t buffer2[SELF_TEST_BUF_OCTETS]; + uint32_t tag_len; + unsigned int len; + int i, j, case_num = 0; + unsigned k = 0; + + debug_print(srtp_mod_cipher, "running self-test for cipher %s", + ct->description); + + /* + * check to make sure that we have at least one test case, and + * return an error if we don't - we need to be paranoid here + */ + if (test_case == NULL) { + return srtp_err_status_cant_check; + } + + /* + * loop over all test cases, perform known-answer tests of both the + * encryption and decryption functions + */ + while (test_case != NULL) { + /* allocate cipher */ + status = srtp_cipher_type_alloc(ct, &c, test_case->key_length_octets, + test_case->tag_length_octets); + if (status) { + return status; + } + + /* + * test the encrypt function + */ + debug_print0(srtp_mod_cipher, "testing encryption"); + + /* initialize cipher */ + status = srtp_cipher_init(c, test_case->key); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + /* copy plaintext into test buffer */ + if (test_case->ciphertext_length_octets > SELF_TEST_BUF_OCTETS) { + srtp_cipher_dealloc(c); + return srtp_err_status_bad_param; + } + for (k = 0; k < test_case->plaintext_length_octets; k++) { + buffer[k] = test_case->plaintext[k]; + } + + debug_print(srtp_mod_cipher, "plaintext: %s", + srtp_octet_string_hex_string( + buffer, test_case->plaintext_length_octets)); + + /* set the initialization vector */ + status = srtp_cipher_set_iv(c, (uint8_t *)test_case->idx, + srtp_direction_encrypt); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + if (c->algorithm == SRTP_AES_GCM_128 || + c->algorithm == SRTP_AES_GCM_256) { + debug_print(srtp_mod_cipher, "IV: %s", + srtp_octet_string_hex_string(test_case->idx, 12)); + + /* + * Set the AAD + */ + status = srtp_cipher_set_aad(c, test_case->aad, + test_case->aad_length_octets); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + debug_print(srtp_mod_cipher, "AAD: %s", + srtp_octet_string_hex_string( + test_case->aad, test_case->aad_length_octets)); + } + + /* encrypt */ + len = test_case->plaintext_length_octets; + status = srtp_cipher_encrypt(c, buffer, &len); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + if (c->algorithm == SRTP_AES_GCM_128 || + c->algorithm == SRTP_AES_GCM_256) { + /* + * Get the GCM tag + */ + status = srtp_cipher_get_tag(c, buffer + len, &tag_len); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + len += tag_len; + } + + debug_print(srtp_mod_cipher, "ciphertext: %s", + srtp_octet_string_hex_string( + buffer, test_case->ciphertext_length_octets)); + + /* compare the resulting ciphertext with that in the test case */ + if (len != test_case->ciphertext_length_octets) { + srtp_cipher_dealloc(c); + return srtp_err_status_algo_fail; + } + status = srtp_err_status_ok; + for (k = 0; k < test_case->ciphertext_length_octets; k++) { + if (buffer[k] != test_case->ciphertext[k]) { + status = srtp_err_status_algo_fail; + debug_print(srtp_mod_cipher, "test case %d failed", case_num); + debug_print(srtp_mod_cipher, "(failure at byte %u)", k); + break; + } + } + if (status) { + debug_print(srtp_mod_cipher, "c computed: %s", + srtp_octet_string_hex_string( + buffer, 2 * test_case->plaintext_length_octets)); + debug_print(srtp_mod_cipher, "c expected: %s", + srtp_octet_string_hex_string( + test_case->ciphertext, + 2 * test_case->plaintext_length_octets)); + + srtp_cipher_dealloc(c); + return srtp_err_status_algo_fail; + } + + /* + * test the decrypt function + */ + debug_print0(srtp_mod_cipher, "testing decryption"); + + /* re-initialize cipher for decryption */ + status = srtp_cipher_init(c, test_case->key); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + /* copy ciphertext into test buffer */ + if (test_case->ciphertext_length_octets > SELF_TEST_BUF_OCTETS) { + srtp_cipher_dealloc(c); + return srtp_err_status_bad_param; + } + for (k = 0; k < test_case->ciphertext_length_octets; k++) { + buffer[k] = test_case->ciphertext[k]; + } + + debug_print(srtp_mod_cipher, "ciphertext: %s", + srtp_octet_string_hex_string( + buffer, test_case->plaintext_length_octets)); + + /* set the initialization vector */ + status = srtp_cipher_set_iv(c, (uint8_t *)test_case->idx, + srtp_direction_decrypt); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + if (c->algorithm == SRTP_AES_GCM_128 || + c->algorithm == SRTP_AES_GCM_256) { + /* + * Set the AAD + */ + status = srtp_cipher_set_aad(c, test_case->aad, + test_case->aad_length_octets); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + debug_print(srtp_mod_cipher, "AAD: %s", + srtp_octet_string_hex_string( + test_case->aad, test_case->aad_length_octets)); + } + + /* decrypt */ + len = test_case->ciphertext_length_octets; + status = srtp_cipher_decrypt(c, buffer, &len); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + debug_print(srtp_mod_cipher, "plaintext: %s", + srtp_octet_string_hex_string( + buffer, test_case->plaintext_length_octets)); + + /* compare the resulting plaintext with that in the test case */ + if (len != test_case->plaintext_length_octets) { + srtp_cipher_dealloc(c); + return srtp_err_status_algo_fail; + } + status = srtp_err_status_ok; + for (k = 0; k < test_case->plaintext_length_octets; k++) { + if (buffer[k] != test_case->plaintext[k]) { + status = srtp_err_status_algo_fail; + debug_print(srtp_mod_cipher, "test case %d failed", case_num); + debug_print(srtp_mod_cipher, "(failure at byte %u)", k); + } + } + if (status) { + debug_print(srtp_mod_cipher, "p computed: %s", + srtp_octet_string_hex_string( + buffer, 2 * test_case->plaintext_length_octets)); + debug_print(srtp_mod_cipher, "p expected: %s", + srtp_octet_string_hex_string( + test_case->plaintext, + 2 * test_case->plaintext_length_octets)); + + srtp_cipher_dealloc(c); + return srtp_err_status_algo_fail; + } + + /* deallocate the cipher */ + status = srtp_cipher_dealloc(c); + if (status) { + return status; + } + + /* + * the cipher passed the test case, so move on to the next test + * case in the list; if NULL, we'l proceed to the next test + */ + test_case = test_case->next_test_case; + ++case_num; + } + + /* now run some random invertibility tests */ + + /* allocate cipher, using paramaters from the first test case */ + test_case = test_data; + status = srtp_cipher_type_alloc(ct, &c, test_case->key_length_octets, + test_case->tag_length_octets); + if (status) { + return status; + } + + for (j = 0; j < NUM_RAND_TESTS; j++) { + unsigned int length; + unsigned int plaintext_len; + uint8_t key[MAX_KEY_LEN]; + uint8_t iv[MAX_KEY_LEN]; + + /* choose a length at random (leaving room for IV and padding) */ + length = srtp_cipher_rand_u32_for_tests() % (SELF_TEST_BUF_OCTETS - 64); + debug_print(srtp_mod_cipher, "random plaintext length %d\n", length); + srtp_cipher_rand_for_tests(buffer, length); + + debug_print(srtp_mod_cipher, "plaintext: %s", + srtp_octet_string_hex_string(buffer, length)); + + /* copy plaintext into second buffer */ + for (i = 0; (unsigned int)i < length; i++) { + buffer2[i] = buffer[i]; + } + + /* choose a key at random */ + if (test_case->key_length_octets > MAX_KEY_LEN) { + srtp_cipher_dealloc(c); + return srtp_err_status_cant_check; + } + srtp_cipher_rand_for_tests(key, test_case->key_length_octets); + + /* chose a random initialization vector */ + srtp_cipher_rand_for_tests(iv, MAX_KEY_LEN); + + /* initialize cipher */ + status = srtp_cipher_init(c, key); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + /* set initialization vector */ + status = srtp_cipher_set_iv(c, (uint8_t *)test_case->idx, + srtp_direction_encrypt); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + if (c->algorithm == SRTP_AES_GCM_128 || + c->algorithm == SRTP_AES_GCM_256) { + /* + * Set the AAD + */ + status = srtp_cipher_set_aad(c, test_case->aad, + test_case->aad_length_octets); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + debug_print(srtp_mod_cipher, "AAD: %s", + srtp_octet_string_hex_string( + test_case->aad, test_case->aad_length_octets)); + } + + /* encrypt buffer with cipher */ + plaintext_len = length; + status = srtp_cipher_encrypt(c, buffer, &length); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + if (c->algorithm == SRTP_AES_GCM_128 || + c->algorithm == SRTP_AES_GCM_256) { + /* + * Get the GCM tag + */ + status = srtp_cipher_get_tag(c, buffer + length, &tag_len); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + length += tag_len; + } + debug_print(srtp_mod_cipher, "ciphertext: %s", + srtp_octet_string_hex_string(buffer, length)); + + /* + * re-initialize cipher for decryption, re-set the iv, then + * decrypt the ciphertext + */ + status = srtp_cipher_init(c, key); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + status = srtp_cipher_set_iv(c, (uint8_t *)test_case->idx, + srtp_direction_decrypt); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + if (c->algorithm == SRTP_AES_GCM_128 || + c->algorithm == SRTP_AES_GCM_256) { + /* + * Set the AAD + */ + status = srtp_cipher_set_aad(c, test_case->aad, + test_case->aad_length_octets); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + debug_print(srtp_mod_cipher, "AAD: %s", + srtp_octet_string_hex_string( + test_case->aad, test_case->aad_length_octets)); + } + status = srtp_cipher_decrypt(c, buffer, &length); + if (status) { + srtp_cipher_dealloc(c); + return status; + } + + debug_print(srtp_mod_cipher, "plaintext[2]: %s", + srtp_octet_string_hex_string(buffer, length)); + + /* compare the resulting plaintext with the original one */ + if (length != plaintext_len) { + srtp_cipher_dealloc(c); + return srtp_err_status_algo_fail; + } + status = srtp_err_status_ok; + for (k = 0; k < plaintext_len; k++) { + if (buffer[k] != buffer2[k]) { + status = srtp_err_status_algo_fail; + debug_print(srtp_mod_cipher, "random test case %d failed", + case_num); + debug_print(srtp_mod_cipher, "(failure at byte %u)", k); + } + } + if (status) { + srtp_cipher_dealloc(c); + return srtp_err_status_algo_fail; + } + } + + status = srtp_cipher_dealloc(c); + if (status) { + return status; + } + + return srtp_err_status_ok; +} + +/* + * srtp_cipher_type_self_test(ct) performs srtp_cipher_type_test on ct's + * internal list of test data. + */ +srtp_err_status_t srtp_cipher_type_self_test(const srtp_cipher_type_t *ct) +{ + return srtp_cipher_type_test(ct, ct->test_data); +} + +/* + * cipher_bits_per_second(c, l, t) computes (an estimate of) the + * number of bits that a cipher implementation can encrypt in a second + * + * c is a cipher (which MUST be allocated and initialized already), l + * is the length in octets of the test data to be encrypted, and t is + * the number of trials + * + * if an error is encountered, the value 0 is returned + */ +uint64_t srtp_cipher_bits_per_second(srtp_cipher_t *c, + int octets_in_buffer, + int num_trials) +{ + int i; + v128_t nonce; + clock_t timer; + unsigned char *enc_buf; + unsigned int len = octets_in_buffer; + + enc_buf = (unsigned char *)srtp_crypto_alloc(octets_in_buffer); + if (enc_buf == NULL) { + return 0; /* indicate bad parameters by returning null */ + } + /* time repeated trials */ + v128_set_to_zero(&nonce); + timer = clock(); + for (i = 0; i < num_trials; i++, nonce.v32[3] = i) { + if (srtp_cipher_set_iv(c, (uint8_t *)&nonce, srtp_direction_encrypt) != + srtp_err_status_ok) { + srtp_crypto_free(enc_buf); + return 0; + } + if (srtp_cipher_encrypt(c, enc_buf, &len) != srtp_err_status_ok) { + srtp_crypto_free(enc_buf); + return 0; + } + } + timer = clock() - timer; + + srtp_crypto_free(enc_buf); + + if (timer == 0) { + /* Too fast! */ + return 0; + } + + return (uint64_t)CLOCKS_PER_SEC * num_trials * 8 * octets_in_buffer / timer; +} diff --git a/third_party/libsrtp/src/crypto/cipher/cipher_test_cases.c b/third_party/libsrtp/src/crypto/cipher/cipher_test_cases.c new file mode 100644 index 0000000000..e4b8f0fcd8 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/cipher_test_cases.c @@ -0,0 +1,365 @@ +/* + * + * Copyright (c) 2013-2021, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "cipher_test_cases.h" +#include <stddef.h> + +/* + * KAT values for AES self-test. These + * values came from the legacy libsrtp code. + */ +/* clang-format off */ +static const uint8_t srtp_aes_icm_128_test_case_0_key[SRTP_AES_ICM_128_KEY_LEN_WSALT] = { + 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, + 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd +}; +/* clang-format on */ + +/* clang-format off */ +static uint8_t srtp_aes_icm_128_test_case_0_nonce[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_icm_128_test_case_0_plaintext[32] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_icm_128_test_case_0_ciphertext[32] = { + 0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80, + 0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4, + 0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7, + 0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab +}; +/* clang-format on */ + +const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0 = { + SRTP_AES_ICM_128_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_icm_128_test_case_0_key, /* key */ + srtp_aes_icm_128_test_case_0_nonce, /* packet index */ + 32, /* octets in plaintext */ + srtp_aes_icm_128_test_case_0_plaintext, /* plaintext */ + 32, /* octets in ciphertext */ + srtp_aes_icm_128_test_case_0_ciphertext, /* ciphertext */ + 0, /* */ + NULL, /* */ + 0, /* */ + NULL /* pointer to next testcase */ +}; + +/* + * KAT values for AES-192-CTR self-test. These + * values came from section 7 of RFC 6188. + */ +/* clang-format off */ +static const uint8_t srtp_aes_icm_192_test_case_0_key[SRTP_AES_ICM_192_KEY_LEN_WSALT] = { + 0xea, 0xb2, 0x34, 0x76, 0x4e, 0x51, 0x7b, 0x2d, + 0x3d, 0x16, 0x0d, 0x58, 0x7d, 0x8c, 0x86, 0x21, + 0x97, 0x40, 0xf6, 0x5f, 0x99, 0xb6, 0xbc, 0xf7, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd +}; +/* clang-format on */ + +/* clang-format off */ +static uint8_t srtp_aes_icm_192_test_case_0_nonce[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_icm_192_test_case_0_plaintext[32] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_icm_192_test_case_0_ciphertext[32] = { + 0x35, 0x09, 0x6c, 0xba, 0x46, 0x10, 0x02, 0x8d, + 0xc1, 0xb5, 0x75, 0x03, 0x80, 0x4c, 0xe3, 0x7c, + 0x5d, 0xe9, 0x86, 0x29, 0x1d, 0xcc, 0xe1, 0x61, + 0xd5, 0x16, 0x5e, 0xc4, 0x56, 0x8f, 0x5c, 0x9a +}; +/* clang-format on */ + +const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0 = { + SRTP_AES_ICM_192_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_icm_192_test_case_0_key, /* key */ + srtp_aes_icm_192_test_case_0_nonce, /* packet index */ + 32, /* octets in plaintext */ + srtp_aes_icm_192_test_case_0_plaintext, /* plaintext */ + 32, /* octets in ciphertext */ + srtp_aes_icm_192_test_case_0_ciphertext, /* ciphertext */ + 0, /* */ + NULL, /* */ + 0, /* */ + NULL /* pointer to next testcase */ +}; + +/* + * KAT values for AES-256-CTR self-test. These + * values came from section 7 of RFC 6188. + */ +/* clang-format off */ +static const uint8_t srtp_aes_icm_256_test_case_0_key[SRTP_AES_ICM_256_KEY_LEN_WSALT] = { + 0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70, + 0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92, + 0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82, + 0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd +}; +/* clang-format on */ + +/* clang-format off */ +static uint8_t srtp_aes_icm_256_test_case_0_nonce[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_icm_256_test_case_0_plaintext[32] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_icm_256_test_case_0_ciphertext[32] = { + 0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25, + 0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4, + 0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6, + 0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac +}; +/* clang-format on */ + +const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0 = { + SRTP_AES_ICM_256_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_icm_256_test_case_0_key, /* key */ + srtp_aes_icm_256_test_case_0_nonce, /* packet index */ + 32, /* octets in plaintext */ + srtp_aes_icm_256_test_case_0_plaintext, /* plaintext */ + 32, /* octets in ciphertext */ + srtp_aes_icm_256_test_case_0_ciphertext, /* ciphertext */ + 0, /* */ + NULL, /* */ + 0, /* */ + NULL /* pointer to next testcase */ +}; + +/* + * KAT values for AES self-test. These + * values we're derived from independent test code + * using OpenSSL. + */ +/* clang-format off */ +static const uint8_t srtp_aes_gcm_128_test_case_0_key[SRTP_AES_GCM_128_KEY_LEN_WSALT] = { + 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, + 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, + 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, + 0x09, 0x0a, 0x0b, 0x0c, +}; +/* clang-format on */ + +/* clang-format off */ +static uint8_t srtp_aes_gcm_128_test_case_0_iv[12] = { + 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, + 0xde, 0xca, 0xf8, 0x88 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_128_test_case_0_plaintext[60] = { + 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, + 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, + 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, + 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, + 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, + 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, + 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, + 0xba, 0x63, 0x7b, 0x39 +}; + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_128_test_case_0_aad[20] = { + 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, + 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, + 0xab, 0xad, 0xda, 0xd2 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_128_test_case_0_ciphertext[76] = { + 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24, + 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c, + 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0, + 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e, + 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c, + 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05, + 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97, + 0x3d, 0x58, 0xe0, 0x91, + /* the last 16 bytes are the tag */ + 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb, + 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47, +}; +/* clang-format on */ + +static const srtp_cipher_test_case_t srtp_aes_gcm_128_test_case_0a = { + SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_gcm_128_test_case_0_key, /* key */ + srtp_aes_gcm_128_test_case_0_iv, /* packet index */ + 60, /* octets in plaintext */ + srtp_aes_gcm_128_test_case_0_plaintext, /* plaintext */ + 68, /* octets in ciphertext */ + srtp_aes_gcm_128_test_case_0_ciphertext, /* ciphertext + tag */ + 20, /* octets in AAD */ + srtp_aes_gcm_128_test_case_0_aad, /* AAD */ + 8, /* */ + NULL /* pointer to next testcase */ +}; + +const srtp_cipher_test_case_t srtp_aes_gcm_128_test_case_0 = { + SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_gcm_128_test_case_0_key, /* key */ + srtp_aes_gcm_128_test_case_0_iv, /* packet index */ + 60, /* octets in plaintext */ + srtp_aes_gcm_128_test_case_0_plaintext, /* plaintext */ + 76, /* octets in ciphertext */ + srtp_aes_gcm_128_test_case_0_ciphertext, /* ciphertext + tag */ + 20, /* octets in AAD */ + srtp_aes_gcm_128_test_case_0_aad, /* AAD */ + 16, /* */ + &srtp_aes_gcm_128_test_case_0a /* pointer to next testcase */ +}; + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_256_test_case_0_key[SRTP_AES_GCM_256_KEY_LEN_WSALT] = { + 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, + 0xa5, 0x59, 0x09, 0xc5, 0x54, 0x66, 0x93, 0x1c, + 0xaf, 0xf5, 0x26, 0x9a, 0x21, 0xd5, 0x14, 0xb2, + 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, + 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, + 0x09, 0x0a, 0x0b, 0x0c, +}; +/* clang-format on */ + +/* clang-format off */ +static uint8_t srtp_aes_gcm_256_test_case_0_iv[12] = { + 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, + 0xde, 0xca, 0xf8, 0x88 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_256_test_case_0_plaintext[60] = { + 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, + 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, + 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, + 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, + 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, + 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, + 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, + 0xba, 0x63, 0x7b, 0x39 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_256_test_case_0_aad[20] = { + 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, + 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, + 0xab, 0xad, 0xda, 0xd2 +}; +/* clang-format on */ + +/* clang-format off */ +static const uint8_t srtp_aes_gcm_256_test_case_0_ciphertext[76] = { + 0x0b, 0x11, 0xcf, 0xaf, 0x68, 0x4d, 0xae, 0x46, + 0xc7, 0x90, 0xb8, 0x8e, 0xb7, 0x6a, 0x76, 0x2a, + 0x94, 0x82, 0xca, 0xab, 0x3e, 0x39, 0xd7, 0x86, + 0x1b, 0xc7, 0x93, 0xed, 0x75, 0x7f, 0x23, 0x5a, + 0xda, 0xfd, 0xd3, 0xe2, 0x0e, 0x80, 0x87, 0xa9, + 0x6d, 0xd7, 0xe2, 0x6a, 0x7d, 0x5f, 0xb4, 0x80, + 0xef, 0xef, 0xc5, 0x29, 0x12, 0xd1, 0xaa, 0x10, + 0x09, 0xc9, 0x86, 0xc1, + /* the last 16 bytes are the tag */ + 0x45, 0xbc, 0x03, 0xe6, 0xe1, 0xac, 0x0a, 0x9f, + 0x81, 0xcb, 0x8e, 0x5b, 0x46, 0x65, 0x63, 0x1d, +}; +/* clang-format on */ + +static const srtp_cipher_test_case_t srtp_aes_gcm_256_test_case_0a = { + SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_gcm_256_test_case_0_key, /* key */ + srtp_aes_gcm_256_test_case_0_iv, /* packet index */ + 60, /* octets in plaintext */ + srtp_aes_gcm_256_test_case_0_plaintext, /* plaintext */ + 68, /* octets in ciphertext */ + srtp_aes_gcm_256_test_case_0_ciphertext, /* ciphertext + tag */ + 20, /* octets in AAD */ + srtp_aes_gcm_256_test_case_0_aad, /* AAD */ + 8, /* */ + NULL /* pointer to next testcase */ +}; + +const srtp_cipher_test_case_t srtp_aes_gcm_256_test_case_0 = { + SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */ + srtp_aes_gcm_256_test_case_0_key, /* key */ + srtp_aes_gcm_256_test_case_0_iv, /* packet index */ + 60, /* octets in plaintext */ + srtp_aes_gcm_256_test_case_0_plaintext, /* plaintext */ + 76, /* octets in ciphertext */ + srtp_aes_gcm_256_test_case_0_ciphertext, /* ciphertext + tag */ + 20, /* octets in AAD */ + srtp_aes_gcm_256_test_case_0_aad, /* AAD */ + 16, /* */ + &srtp_aes_gcm_256_test_case_0a /* pointer to next testcase */ +}; diff --git a/third_party/libsrtp/src/crypto/cipher/cipher_test_cases.h b/third_party/libsrtp/src/crypto/cipher/cipher_test_cases.h new file mode 100644 index 0000000000..c8a9284002 --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/cipher_test_cases.h @@ -0,0 +1,53 @@ +/* + * + * Copyright (c) 2013-2021, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef CHIPHER_TEST_CASES_H +#define CHIPHER_TEST_CASES_H + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "cipher.h" + +extern const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0; +extern const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0; +extern const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0; + +extern const srtp_cipher_test_case_t srtp_aes_gcm_128_test_case_0; +extern const srtp_cipher_test_case_t srtp_aes_gcm_256_test_case_0; + +#endif diff --git a/third_party/libsrtp/src/crypto/cipher/null_cipher.c b/third_party/libsrtp/src/crypto/cipher/null_cipher.c new file mode 100644 index 0000000000..969724611c --- /dev/null +++ b/third_party/libsrtp/src/crypto/cipher/null_cipher.c @@ -0,0 +1,153 @@ +/* + * null_cipher.c + * + * A null cipher implementation. This cipher leaves the plaintext + * unchanged. + * + * David A. McGrew + * Cisco Systems, Inc. + */ + +/* + * + * Copyright (c) 2001-2017 Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include "datatypes.h" +#include "null_cipher.h" +#include "err.h" /* for srtp_debug */ +#include "alloc.h" +#include "cipher_types.h" + +static srtp_err_status_t srtp_null_cipher_alloc(srtp_cipher_t **c, + int key_len, + int tlen) +{ + extern const srtp_cipher_type_t srtp_null_cipher; + + debug_print(srtp_mod_cipher, "allocating cipher with key length %d", + key_len); + + /* allocate memory a cipher of type null_cipher */ + *c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t)); + if (*c == NULL) { + return srtp_err_status_alloc_fail; + } + + /* set pointers */ + (*c)->algorithm = SRTP_NULL_CIPHER; + (*c)->type = &srtp_null_cipher; + (*c)->state = (void *)0x1; /* The null cipher does not maintain state */ + + /* set key size */ + (*c)->key_len = key_len; + + return srtp_err_status_ok; +} + +static srtp_err_status_t srtp_null_cipher_dealloc(srtp_cipher_t *c) +{ + extern const srtp_cipher_type_t srtp_null_cipher; + + /* zeroize entire state*/ + octet_string_set_to_zero(c, sizeof(srtp_cipher_t)); + + /* free memory of type null_cipher */ + srtp_crypto_free(c); + + return srtp_err_status_ok; +} + +static srtp_err_status_t srtp_null_cipher_init(void *cv, const uint8_t *key) +{ + /* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */ + + debug_print0(srtp_mod_cipher, "initializing null cipher"); + + return srtp_err_status_ok; +} + +static srtp_err_status_t srtp_null_cipher_set_iv(void *cv, + uint8_t *iv, + srtp_cipher_direction_t dir) +{ + /* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */ + return srtp_err_status_ok; +} + +static srtp_err_status_t srtp_null_cipher_encrypt(void *cv, + unsigned char *buf, + unsigned int *bytes_to_encr) +{ + /* srtp_null_cipher_ctx_t *c = (srtp_null_cipher_ctx_t *)cv; */ + return srtp_err_status_ok; +} + +static const char srtp_null_cipher_description[] = "null cipher"; + +static const srtp_cipher_test_case_t srtp_null_cipher_test_0 = { + 0, /* octets in key */ + NULL, /* key */ + 0, /* packet index */ + 0, /* octets in plaintext */ + NULL, /* plaintext */ + 0, /* octets in plaintext */ + NULL, /* ciphertext */ + 0, /* */ + NULL, /* */ + 0, /* */ + NULL /* pointer to next testcase */ +}; + +/* + * note: the decrypt function is idential to the encrypt function + */ + +const srtp_cipher_type_t srtp_null_cipher = { + srtp_null_cipher_alloc, /* */ + srtp_null_cipher_dealloc, /* */ + srtp_null_cipher_init, /* */ + 0, /* set_aad */ + srtp_null_cipher_encrypt, /* */ + srtp_null_cipher_encrypt, /* */ + srtp_null_cipher_set_iv, /* */ + 0, /* get_tag */ + srtp_null_cipher_description, /* */ + &srtp_null_cipher_test_0, /* */ + SRTP_NULL_CIPHER /* */ +}; |