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Diffstat (limited to 'lib/crypto/aes.h')
| -rw-r--r-- | lib/crypto/aes.h | 678 |
1 files changed, 678 insertions, 0 deletions
diff --git a/lib/crypto/aes.h b/lib/crypto/aes.h new file mode 100644 index 0000000..00bfa3e --- /dev/null +++ b/lib/crypto/aes.h @@ -0,0 +1,678 @@ +/* + * Copyright (c) 2003-2004 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. 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. + * + * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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. + */ + +/* $Id$ */ + +#ifndef LIB_CRYPTO_AES_H +#define LIB_CRYPTO_AES_H 1 + +#include "aesni.h" + +#define SAMBA_RIJNDAEL 1 +#define SAMBA_AES_CBC_ENCRYPT 1 +#define SAMBA_AES_CFB8_ENCRYPT 1 +#define SAMBA_AES_BLOCK_XOR 1 + +/* symbol renaming */ +#define AES_set_encrypt_key samba_AES_set_encrypt_key +#define AES_set_decrypt_key samba_AES_decrypt_key +#define AES_encrypt samba_AES_encrypt +#define AES_decrypt samba_AES_decrypt +#define AES_cbc_encrypt samba_AES_cbc_encrypt +#define AES_cfb8_encrypt samba_AES_cfb8_encrypt + +/* + * + */ + +#define AES_BLOCK_SIZE 16 +#define AES_MAXNR 14 + +#define AES_ENCRYPT 1 +#define AES_DECRYPT 0 + +struct aes_key_rj { + uint32_t key[(AES_MAXNR+1)*4]; + int rounds; +}; + +typedef struct aes_key { + union { + struct aes_key_rj aes_rj; + struct crypto_aesni_ctx aes_ni; + } u; +} AES_KEY; + +#ifdef __cplusplus +extern "C" { +#endif + +int AES_set_encrypt_key(const unsigned char *, const int, AES_KEY *); +int AES_set_decrypt_key(const unsigned char *, const int, AES_KEY *); + +void AES_encrypt(const unsigned char *, unsigned char *, const AES_KEY *); +void AES_decrypt(const unsigned char *, unsigned char *, const AES_KEY *); + +void AES_cbc_encrypt(const unsigned char *, unsigned char *, + const unsigned long, const AES_KEY *, + unsigned char *, int); + +void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out, + unsigned long size, const AES_KEY *key, + unsigned char *iv, int forward_encrypt); + +#define aes_cfb8_encrypt(in, out, size, key, iv, forward_encrypt) \ + AES_cfb8_encrypt(in, out, size, key, iv, forward_encrypt) + +#ifdef __cplusplus +} +#endif + +#ifdef SAMBA_AES_BLOCK_XOR +static inline void aes_block_xor(const uint8_t in1[AES_BLOCK_SIZE], + const uint8_t in2[AES_BLOCK_SIZE], + uint8_t out[AES_BLOCK_SIZE]) +{ +#define __IS_ALIGN8(p) ((((uintptr_t)(p)) & 0x7) == 0) +#define __IS_ALIGNED(a,b,c) __IS_ALIGN8(\ + ((uintptr_t)(a)) | \ + ((uintptr_t)(b)) | \ + ((uintptr_t)(c))) + /* If everything is aligned we can optimize */ + if (likely(__IS_ALIGNED(in1, in2, out))) { +#define __RO64(p) ((const uint64_t *)(p)) +#define __RW64(p) ((uint64_t *)(p)) + __RW64(out)[0] = __RO64(in1)[0] ^ __RO64(in2)[0]; + __RW64(out)[1] = __RO64(in1)[1] ^ __RO64(in2)[1]; + } else { + uint64_t i1[2]; + uint64_t i2[2]; + uint64_t o[2]; + + memcpy(i1, in1, AES_BLOCK_SIZE); + memcpy(i2, in2, AES_BLOCK_SIZE); + o[0] = i1[0] ^ i2[0]; + o[1] = i1[1] ^ i2[1]; + memcpy(out, o, AES_BLOCK_SIZE); + } +} +#endif /* SAMBA_AES_BLOCK_XOR */ + +static inline void aes_block_lshift(const uint8_t in[AES_BLOCK_SIZE], + uint8_t out[AES_BLOCK_SIZE]) +{ + static const struct aes_block_lshift_entry { + uint8_t lshift; + uint8_t overflow; + } aes_block_lshift_table[UINT8_MAX+1] = { + [0x00] = { .lshift = 0x00, .overflow = 0x00 }, + [0x01] = { .lshift = 0x02, .overflow = 0x00 }, + [0x02] = { .lshift = 0x04, .overflow = 0x00 }, + [0x03] = { .lshift = 0x06, .overflow = 0x00 }, + [0x04] = { .lshift = 0x08, .overflow = 0x00 }, + [0x05] = { .lshift = 0x0a, .overflow = 0x00 }, + [0x06] = { .lshift = 0x0c, .overflow = 0x00 }, + [0x07] = { .lshift = 0x0e, .overflow = 0x00 }, + [0x08] = { .lshift = 0x10, .overflow = 0x00 }, + [0x09] = { .lshift = 0x12, .overflow = 0x00 }, + [0x0a] = { .lshift = 0x14, .overflow = 0x00 }, + [0x0b] = { .lshift = 0x16, .overflow = 0x00 }, + [0x0c] = { .lshift = 0x18, .overflow = 0x00 }, + [0x0d] = { .lshift = 0x1a, .overflow = 0x00 }, + [0x0e] = { .lshift = 0x1c, .overflow = 0x00 }, + [0x0f] = { .lshift = 0x1e, .overflow = 0x00 }, + [0x10] = { .lshift = 0x20, .overflow = 0x00 }, + [0x11] = { .lshift = 0x22, .overflow = 0x00 }, + [0x12] = { .lshift = 0x24, .overflow = 0x00 }, + [0x13] = { .lshift = 0x26, .overflow = 0x00 }, + [0x14] = { .lshift = 0x28, .overflow = 0x00 }, + [0x15] = { .lshift = 0x2a, .overflow = 0x00 }, + [0x16] = { .lshift = 0x2c, .overflow = 0x00 }, + [0x17] = { .lshift = 0x2e, .overflow = 0x00 }, + [0x18] = { .lshift = 0x30, .overflow = 0x00 }, + [0x19] = { .lshift = 0x32, .overflow = 0x00 }, + [0x1a] = { .lshift = 0x34, .overflow = 0x00 }, + [0x1b] = { .lshift = 0x36, .overflow = 0x00 }, + [0x1c] = { .lshift = 0x38, .overflow = 0x00 }, + [0x1d] = { .lshift = 0x3a, .overflow = 0x00 }, + [0x1e] = { .lshift = 0x3c, .overflow = 0x00 }, + [0x1f] = { .lshift = 0x3e, .overflow = 0x00 }, + [0x20] = { .lshift = 0x40, .overflow = 0x00 }, + [0x21] = { .lshift = 0x42, .overflow = 0x00 }, + [0x22] = { .lshift = 0x44, .overflow = 0x00 }, + [0x23] = { .lshift = 0x46, .overflow = 0x00 }, + [0x24] = { .lshift = 0x48, .overflow = 0x00 }, + [0x25] = { .lshift = 0x4a, .overflow = 0x00 }, + [0x26] = { .lshift = 0x4c, .overflow = 0x00 }, + [0x27] = { .lshift = 0x4e, .overflow = 0x00 }, + [0x28] = { .lshift = 0x50, .overflow = 0x00 }, + [0x29] = { .lshift = 0x52, .overflow = 0x00 }, + [0x2a] = { .lshift = 0x54, .overflow = 0x00 }, + [0x2b] = { .lshift = 0x56, .overflow = 0x00 }, + [0x2c] = { .lshift = 0x58, .overflow = 0x00 }, + [0x2d] = { .lshift = 0x5a, .overflow = 0x00 }, + [0x2e] = { .lshift = 0x5c, .overflow = 0x00 }, + [0x2f] = { .lshift = 0x5e, .overflow = 0x00 }, + [0x30] = { .lshift = 0x60, .overflow = 0x00 }, + [0x31] = { .lshift = 0x62, .overflow = 0x00 }, + [0x32] = { .lshift = 0x64, .overflow = 0x00 }, + [0x33] = { .lshift = 0x66, .overflow = 0x00 }, + [0x34] = { .lshift = 0x68, .overflow = 0x00 }, + [0x35] = { .lshift = 0x6a, .overflow = 0x00 }, + [0x36] = { .lshift = 0x6c, .overflow = 0x00 }, + [0x37] = { .lshift = 0x6e, .overflow = 0x00 }, + [0x38] = { .lshift = 0x70, .overflow = 0x00 }, + [0x39] = { .lshift = 0x72, .overflow = 0x00 }, + [0x3a] = { .lshift = 0x74, .overflow = 0x00 }, + [0x3b] = { .lshift = 0x76, .overflow = 0x00 }, + [0x3c] = { .lshift = 0x78, .overflow = 0x00 }, + [0x3d] = { .lshift = 0x7a, .overflow = 0x00 }, + [0x3e] = { .lshift = 0x7c, .overflow = 0x00 }, + [0x3f] = { .lshift = 0x7e, .overflow = 0x00 }, + [0x40] = { .lshift = 0x80, .overflow = 0x00 }, + [0x41] = { .lshift = 0x82, .overflow = 0x00 }, + [0x42] = { .lshift = 0x84, .overflow = 0x00 }, + [0x43] = { .lshift = 0x86, .overflow = 0x00 }, + [0x44] = { .lshift = 0x88, .overflow = 0x00 }, + [0x45] = { .lshift = 0x8a, .overflow = 0x00 }, + [0x46] = { .lshift = 0x8c, .overflow = 0x00 }, + [0x47] = { .lshift = 0x8e, .overflow = 0x00 }, + [0x48] = { .lshift = 0x90, .overflow = 0x00 }, + [0x49] = { .lshift = 0x92, .overflow = 0x00 }, + [0x4a] = { .lshift = 0x94, .overflow = 0x00 }, + [0x4b] = { .lshift = 0x96, .overflow = 0x00 }, + [0x4c] = { .lshift = 0x98, .overflow = 0x00 }, + [0x4d] = { .lshift = 0x9a, .overflow = 0x00 }, + [0x4e] = { .lshift = 0x9c, .overflow = 0x00 }, + [0x4f] = { .lshift = 0x9e, .overflow = 0x00 }, + [0x50] = { .lshift = 0xa0, .overflow = 0x00 }, + [0x51] = { .lshift = 0xa2, .overflow = 0x00 }, + [0x52] = { .lshift = 0xa4, .overflow = 0x00 }, + [0x53] = { .lshift = 0xa6, .overflow = 0x00 }, + [0x54] = { .lshift = 0xa8, .overflow = 0x00 }, + [0x55] = { .lshift = 0xaa, .overflow = 0x00 }, + [0x56] = { .lshift = 0xac, .overflow = 0x00 }, + [0x57] = { .lshift = 0xae, .overflow = 0x00 }, + [0x58] = { .lshift = 0xb0, .overflow = 0x00 }, + [0x59] = { .lshift = 0xb2, .overflow = 0x00 }, + [0x5a] = { .lshift = 0xb4, .overflow = 0x00 }, + [0x5b] = { .lshift = 0xb6, .overflow = 0x00 }, + [0x5c] = { .lshift = 0xb8, .overflow = 0x00 }, + [0x5d] = { .lshift = 0xba, .overflow = 0x00 }, + [0x5e] = { .lshift = 0xbc, .overflow = 0x00 }, + [0x5f] = { .lshift = 0xbe, .overflow = 0x00 }, + [0x60] = { .lshift = 0xc0, .overflow = 0x00 }, + [0x61] = { .lshift = 0xc2, .overflow = 0x00 }, + [0x62] = { .lshift = 0xc4, .overflow = 0x00 }, + [0x63] = { .lshift = 0xc6, .overflow = 0x00 }, + [0x64] = { .lshift = 0xc8, .overflow = 0x00 }, + [0x65] = { .lshift = 0xca, .overflow = 0x00 }, + [0x66] = { .lshift = 0xcc, .overflow = 0x00 }, + [0x67] = { .lshift = 0xce, .overflow = 0x00 }, + [0x68] = { .lshift = 0xd0, .overflow = 0x00 }, + [0x69] = { .lshift = 0xd2, .overflow = 0x00 }, + [0x6a] = { .lshift = 0xd4, .overflow = 0x00 }, + [0x6b] = { .lshift = 0xd6, .overflow = 0x00 }, + [0x6c] = { .lshift = 0xd8, .overflow = 0x00 }, + [0x6d] = { .lshift = 0xda, .overflow = 0x00 }, + [0x6e] = { .lshift = 0xdc, .overflow = 0x00 }, + [0x6f] = { .lshift = 0xde, .overflow = 0x00 }, + [0x70] = { .lshift = 0xe0, .overflow = 0x00 }, + [0x71] = { .lshift = 0xe2, .overflow = 0x00 }, + [0x72] = { .lshift = 0xe4, .overflow = 0x00 }, + [0x73] = { .lshift = 0xe6, .overflow = 0x00 }, + [0x74] = { .lshift = 0xe8, .overflow = 0x00 }, + [0x75] = { .lshift = 0xea, .overflow = 0x00 }, + [0x76] = { .lshift = 0xec, .overflow = 0x00 }, + [0x77] = { .lshift = 0xee, .overflow = 0x00 }, + [0x78] = { .lshift = 0xf0, .overflow = 0x00 }, + [0x79] = { .lshift = 0xf2, .overflow = 0x00 }, + [0x7a] = { .lshift = 0xf4, .overflow = 0x00 }, + [0x7b] = { .lshift = 0xf6, .overflow = 0x00 }, + [0x7c] = { .lshift = 0xf8, .overflow = 0x00 }, + [0x7d] = { .lshift = 0xfa, .overflow = 0x00 }, + [0x7e] = { .lshift = 0xfc, .overflow = 0x00 }, + [0x7f] = { .lshift = 0xfe, .overflow = 0x00 }, + [0x80] = { .lshift = 0x00, .overflow = 0x01 }, + [0x81] = { .lshift = 0x02, .overflow = 0x01 }, + [0x82] = { .lshift = 0x04, .overflow = 0x01 }, + [0x83] = { .lshift = 0x06, .overflow = 0x01 }, + [0x84] = { .lshift = 0x08, .overflow = 0x01 }, + [0x85] = { .lshift = 0x0a, .overflow = 0x01 }, + [0x86] = { .lshift = 0x0c, .overflow = 0x01 }, + [0x87] = { .lshift = 0x0e, .overflow = 0x01 }, + [0x88] = { .lshift = 0x10, .overflow = 0x01 }, + [0x89] = { .lshift = 0x12, .overflow = 0x01 }, + [0x8a] = { .lshift = 0x14, .overflow = 0x01 }, + [0x8b] = { .lshift = 0x16, .overflow = 0x01 }, + [0x8c] = { .lshift = 0x18, .overflow = 0x01 }, + [0x8d] = { .lshift = 0x1a, .overflow = 0x01 }, + [0x8e] = { .lshift = 0x1c, .overflow = 0x01 }, + [0x8f] = { .lshift = 0x1e, .overflow = 0x01 }, + [0x90] = { .lshift = 0x20, .overflow = 0x01 }, + [0x91] = { .lshift = 0x22, .overflow = 0x01 }, + [0x92] = { .lshift = 0x24, .overflow = 0x01 }, + [0x93] = { .lshift = 0x26, .overflow = 0x01 }, + [0x94] = { .lshift = 0x28, .overflow = 0x01 }, + [0x95] = { .lshift = 0x2a, .overflow = 0x01 }, + [0x96] = { .lshift = 0x2c, .overflow = 0x01 }, + [0x97] = { .lshift = 0x2e, .overflow = 0x01 }, + [0x98] = { .lshift = 0x30, .overflow = 0x01 }, + [0x99] = { .lshift = 0x32, .overflow = 0x01 }, + [0x9a] = { .lshift = 0x34, .overflow = 0x01 }, + [0x9b] = { .lshift = 0x36, .overflow = 0x01 }, + [0x9c] = { .lshift = 0x38, .overflow = 0x01 }, + [0x9d] = { .lshift = 0x3a, .overflow = 0x01 }, + [0x9e] = { .lshift = 0x3c, .overflow = 0x01 }, + [0x9f] = { .lshift = 0x3e, .overflow = 0x01 }, + [0xa0] = { .lshift = 0x40, .overflow = 0x01 }, + [0xa1] = { .lshift = 0x42, .overflow = 0x01 }, + [0xa2] = { .lshift = 0x44, .overflow = 0x01 }, + [0xa3] = { .lshift = 0x46, .overflow = 0x01 }, + [0xa4] = { .lshift = 0x48, .overflow = 0x01 }, + [0xa5] = { .lshift = 0x4a, .overflow = 0x01 }, + [0xa6] = { .lshift = 0x4c, .overflow = 0x01 }, + [0xa7] = { .lshift = 0x4e, .overflow = 0x01 }, + [0xa8] = { .lshift = 0x50, .overflow = 0x01 }, + [0xa9] = { .lshift = 0x52, .overflow = 0x01 }, + [0xaa] = { .lshift = 0x54, .overflow = 0x01 }, + [0xab] = { .lshift = 0x56, .overflow = 0x01 }, + [0xac] = { .lshift = 0x58, .overflow = 0x01 }, + [0xad] = { .lshift = 0x5a, .overflow = 0x01 }, + [0xae] = { .lshift = 0x5c, .overflow = 0x01 }, + [0xaf] = { .lshift = 0x5e, .overflow = 0x01 }, + [0xb0] = { .lshift = 0x60, .overflow = 0x01 }, + [0xb1] = { .lshift = 0x62, .overflow = 0x01 }, + [0xb2] = { .lshift = 0x64, .overflow = 0x01 }, + [0xb3] = { .lshift = 0x66, .overflow = 0x01 }, + [0xb4] = { .lshift = 0x68, .overflow = 0x01 }, + [0xb5] = { .lshift = 0x6a, .overflow = 0x01 }, + [0xb6] = { .lshift = 0x6c, .overflow = 0x01 }, + [0xb7] = { .lshift = 0x6e, .overflow = 0x01 }, + [0xb8] = { .lshift = 0x70, .overflow = 0x01 }, + [0xb9] = { .lshift = 0x72, .overflow = 0x01 }, + [0xba] = { .lshift = 0x74, .overflow = 0x01 }, + [0xbb] = { .lshift = 0x76, .overflow = 0x01 }, + [0xbc] = { .lshift = 0x78, .overflow = 0x01 }, + [0xbd] = { .lshift = 0x7a, .overflow = 0x01 }, + [0xbe] = { .lshift = 0x7c, .overflow = 0x01 }, + [0xbf] = { .lshift = 0x7e, .overflow = 0x01 }, + [0xc0] = { .lshift = 0x80, .overflow = 0x01 }, + [0xc1] = { .lshift = 0x82, .overflow = 0x01 }, + [0xc2] = { .lshift = 0x84, .overflow = 0x01 }, + [0xc3] = { .lshift = 0x86, .overflow = 0x01 }, + [0xc4] = { .lshift = 0x88, .overflow = 0x01 }, + [0xc5] = { .lshift = 0x8a, .overflow = 0x01 }, + [0xc6] = { .lshift = 0x8c, .overflow = 0x01 }, + [0xc7] = { .lshift = 0x8e, .overflow = 0x01 }, + [0xc8] = { .lshift = 0x90, .overflow = 0x01 }, + [0xc9] = { .lshift = 0x92, .overflow = 0x01 }, + [0xca] = { .lshift = 0x94, .overflow = 0x01 }, + [0xcb] = { .lshift = 0x96, .overflow = 0x01 }, + [0xcc] = { .lshift = 0x98, .overflow = 0x01 }, + [0xcd] = { .lshift = 0x9a, .overflow = 0x01 }, + [0xce] = { .lshift = 0x9c, .overflow = 0x01 }, + [0xcf] = { .lshift = 0x9e, .overflow = 0x01 }, + [0xd0] = { .lshift = 0xa0, .overflow = 0x01 }, + [0xd1] = { .lshift = 0xa2, .overflow = 0x01 }, + [0xd2] = { .lshift = 0xa4, .overflow = 0x01 }, + [0xd3] = { .lshift = 0xa6, .overflow = 0x01 }, + [0xd4] = { .lshift = 0xa8, .overflow = 0x01 }, + [0xd5] = { .lshift = 0xaa, .overflow = 0x01 }, + [0xd6] = { .lshift = 0xac, .overflow = 0x01 }, + [0xd7] = { .lshift = 0xae, .overflow = 0x01 }, + [0xd8] = { .lshift = 0xb0, .overflow = 0x01 }, + [0xd9] = { .lshift = 0xb2, .overflow = 0x01 }, + [0xda] = { .lshift = 0xb4, .overflow = 0x01 }, + [0xdb] = { .lshift = 0xb6, .overflow = 0x01 }, + [0xdc] = { .lshift = 0xb8, .overflow = 0x01 }, + [0xdd] = { .lshift = 0xba, .overflow = 0x01 }, + [0xde] = { .lshift = 0xbc, .overflow = 0x01 }, + [0xdf] = { .lshift = 0xbe, .overflow = 0x01 }, + [0xe0] = { .lshift = 0xc0, .overflow = 0x01 }, + [0xe1] = { .lshift = 0xc2, .overflow = 0x01 }, + [0xe2] = { .lshift = 0xc4, .overflow = 0x01 }, + [0xe3] = { .lshift = 0xc6, .overflow = 0x01 }, + [0xe4] = { .lshift = 0xc8, .overflow = 0x01 }, + [0xe5] = { .lshift = 0xca, .overflow = 0x01 }, + [0xe6] = { .lshift = 0xcc, .overflow = 0x01 }, + [0xe7] = { .lshift = 0xce, .overflow = 0x01 }, + [0xe8] = { .lshift = 0xd0, .overflow = 0x01 }, + [0xe9] = { .lshift = 0xd2, .overflow = 0x01 }, + [0xea] = { .lshift = 0xd4, .overflow = 0x01 }, + [0xeb] = { .lshift = 0xd6, .overflow = 0x01 }, + [0xec] = { .lshift = 0xd8, .overflow = 0x01 }, + [0xed] = { .lshift = 0xda, .overflow = 0x01 }, + [0xee] = { .lshift = 0xdc, .overflow = 0x01 }, + [0xef] = { .lshift = 0xde, .overflow = 0x01 }, + [0xf0] = { .lshift = 0xe0, .overflow = 0x01 }, + [0xf1] = { .lshift = 0xe2, .overflow = 0x01 }, + [0xf2] = { .lshift = 0xe4, .overflow = 0x01 }, + [0xf3] = { .lshift = 0xe6, .overflow = 0x01 }, + [0xf4] = { .lshift = 0xe8, .overflow = 0x01 }, + [0xf5] = { .lshift = 0xea, .overflow = 0x01 }, + [0xf6] = { .lshift = 0xec, .overflow = 0x01 }, + [0xf7] = { .lshift = 0xee, .overflow = 0x01 }, + [0xf8] = { .lshift = 0xf0, .overflow = 0x01 }, + [0xf9] = { .lshift = 0xf2, .overflow = 0x01 }, + [0xfa] = { .lshift = 0xf4, .overflow = 0x01 }, + [0xfb] = { .lshift = 0xf6, .overflow = 0x01 }, + [0xfc] = { .lshift = 0xf8, .overflow = 0x01 }, + [0xfd] = { .lshift = 0xfa, .overflow = 0x01 }, + [0xfe] = { .lshift = 0xfc, .overflow = 0x01 }, + [0xff] = { .lshift = 0xfe, .overflow = 0x01 }, + }; + int8_t i; + uint8_t overflow = 0; + + for (i = AES_BLOCK_SIZE - 1; i >= 0; i--) { + const struct aes_block_lshift_entry *e = &aes_block_lshift_table[in[i]]; + out[i] = e->lshift | overflow; + overflow = e->overflow; + } +} + +static inline void aes_block_rshift(const uint8_t in[AES_BLOCK_SIZE], + uint8_t out[AES_BLOCK_SIZE]) +{ + static const struct aes_block_rshift_entry { + uint8_t rshift; + uint8_t overflow; + } aes_block_rshift_table[UINT8_MAX+1] = { + [0x00] = { .rshift = 0x00, .overflow = 0x00 }, + [0x01] = { .rshift = 0x00, .overflow = 0x80 }, + [0x02] = { .rshift = 0x01, .overflow = 0x00 }, + [0x03] = { .rshift = 0x01, .overflow = 0x80 }, + [0x04] = { .rshift = 0x02, .overflow = 0x00 }, + [0x05] = { .rshift = 0x02, .overflow = 0x80 }, + [0x06] = { .rshift = 0x03, .overflow = 0x00 }, + [0x07] = { .rshift = 0x03, .overflow = 0x80 }, + [0x08] = { .rshift = 0x04, .overflow = 0x00 }, + [0x09] = { .rshift = 0x04, .overflow = 0x80 }, + [0x0a] = { .rshift = 0x05, .overflow = 0x00 }, + [0x0b] = { .rshift = 0x05, .overflow = 0x80 }, + [0x0c] = { .rshift = 0x06, .overflow = 0x00 }, + [0x0d] = { .rshift = 0x06, .overflow = 0x80 }, + [0x0e] = { .rshift = 0x07, .overflow = 0x00 }, + [0x0f] = { .rshift = 0x07, .overflow = 0x80 }, + [0x10] = { .rshift = 0x08, .overflow = 0x00 }, + [0x11] = { .rshift = 0x08, .overflow = 0x80 }, + [0x12] = { .rshift = 0x09, .overflow = 0x00 }, + [0x13] = { .rshift = 0x09, .overflow = 0x80 }, + [0x14] = { .rshift = 0x0a, .overflow = 0x00 }, + [0x15] = { .rshift = 0x0a, .overflow = 0x80 }, + [0x16] = { .rshift = 0x0b, .overflow = 0x00 }, + [0x17] = { .rshift = 0x0b, .overflow = 0x80 }, + [0x18] = { .rshift = 0x0c, .overflow = 0x00 }, + [0x19] = { .rshift = 0x0c, .overflow = 0x80 }, + [0x1a] = { .rshift = 0x0d, .overflow = 0x00 }, + [0x1b] = { .rshift = 0x0d, .overflow = 0x80 }, + [0x1c] = { .rshift = 0x0e, .overflow = 0x00 }, + [0x1d] = { .rshift = 0x0e, .overflow = 0x80 }, + [0x1e] = { .rshift = 0x0f, .overflow = 0x00 }, + [0x1f] = { .rshift = 0x0f, .overflow = 0x80 }, + [0x20] = { .rshift = 0x10, .overflow = 0x00 }, + [0x21] = { .rshift = 0x10, .overflow = 0x80 }, + [0x22] = { .rshift = 0x11, .overflow = 0x00 }, + [0x23] = { .rshift = 0x11, .overflow = 0x80 }, + [0x24] = { .rshift = 0x12, .overflow = 0x00 }, + [0x25] = { .rshift = 0x12, .overflow = 0x80 }, + [0x26] = { .rshift = 0x13, .overflow = 0x00 }, + [0x27] = { .rshift = 0x13, .overflow = 0x80 }, + [0x28] = { .rshift = 0x14, .overflow = 0x00 }, + [0x29] = { .rshift = 0x14, .overflow = 0x80 }, + [0x2a] = { .rshift = 0x15, .overflow = 0x00 }, + [0x2b] = { .rshift = 0x15, .overflow = 0x80 }, + [0x2c] = { .rshift = 0x16, .overflow = 0x00 }, + [0x2d] = { .rshift = 0x16, .overflow = 0x80 }, + [0x2e] = { .rshift = 0x17, .overflow = 0x00 }, + [0x2f] = { .rshift = 0x17, .overflow = 0x80 }, + [0x30] = { .rshift = 0x18, .overflow = 0x00 }, + [0x31] = { .rshift = 0x18, .overflow = 0x80 }, + [0x32] = { .rshift = 0x19, .overflow = 0x00 }, + [0x33] = { .rshift = 0x19, .overflow = 0x80 }, + [0x34] = { .rshift = 0x1a, .overflow = 0x00 }, + [0x35] = { .rshift = 0x1a, .overflow = 0x80 }, + [0x36] = { .rshift = 0x1b, .overflow = 0x00 }, + [0x37] = { .rshift = 0x1b, .overflow = 0x80 }, + [0x38] = { .rshift = 0x1c, .overflow = 0x00 }, + [0x39] = { .rshift = 0x1c, .overflow = 0x80 }, + [0x3a] = { .rshift = 0x1d, .overflow = 0x00 }, + [0x3b] = { .rshift = 0x1d, .overflow = 0x80 }, + [0x3c] = { .rshift = 0x1e, .overflow = 0x00 }, + [0x3d] = { .rshift = 0x1e, .overflow = 0x80 }, + [0x3e] = { .rshift = 0x1f, .overflow = 0x00 }, + [0x3f] = { .rshift = 0x1f, .overflow = 0x80 }, + [0x40] = { .rshift = 0x20, .overflow = 0x00 }, + [0x41] = { .rshift = 0x20, .overflow = 0x80 }, + [0x42] = { .rshift = 0x21, .overflow = 0x00 }, + [0x43] = { .rshift = 0x21, .overflow = 0x80 }, + [0x44] = { .rshift = 0x22, .overflow = 0x00 }, + [0x45] = { .rshift = 0x22, .overflow = 0x80 }, + [0x46] = { .rshift = 0x23, .overflow = 0x00 }, + [0x47] = { .rshift = 0x23, .overflow = 0x80 }, + [0x48] = { .rshift = 0x24, .overflow = 0x00 }, + [0x49] = { .rshift = 0x24, .overflow = 0x80 }, + [0x4a] = { .rshift = 0x25, .overflow = 0x00 }, + [0x4b] = { .rshift = 0x25, .overflow = 0x80 }, + [0x4c] = { .rshift = 0x26, .overflow = 0x00 }, + [0x4d] = { .rshift = 0x26, .overflow = 0x80 }, + [0x4e] = { .rshift = 0x27, .overflow = 0x00 }, + [0x4f] = { .rshift = 0x27, .overflow = 0x80 }, + [0x50] = { .rshift = 0x28, .overflow = 0x00 }, + [0x51] = { .rshift = 0x28, .overflow = 0x80 }, + [0x52] = { .rshift = 0x29, .overflow = 0x00 }, + [0x53] = { .rshift = 0x29, .overflow = 0x80 }, + [0x54] = { .rshift = 0x2a, .overflow = 0x00 }, + [0x55] = { .rshift = 0x2a, .overflow = 0x80 }, + [0x56] = { .rshift = 0x2b, .overflow = 0x00 }, + [0x57] = { .rshift = 0x2b, .overflow = 0x80 }, + [0x58] = { .rshift = 0x2c, .overflow = 0x00 }, + [0x59] = { .rshift = 0x2c, .overflow = 0x80 }, + [0x5a] = { .rshift = 0x2d, .overflow = 0x00 }, + [0x5b] = { .rshift = 0x2d, .overflow = 0x80 }, + [0x5c] = { .rshift = 0x2e, .overflow = 0x00 }, + [0x5d] = { .rshift = 0x2e, .overflow = 0x80 }, + [0x5e] = { .rshift = 0x2f, .overflow = 0x00 }, + [0x5f] = { .rshift = 0x2f, .overflow = 0x80 }, + [0x60] = { .rshift = 0x30, .overflow = 0x00 }, + [0x61] = { .rshift = 0x30, .overflow = 0x80 }, + [0x62] = { .rshift = 0x31, .overflow = 0x00 }, + [0x63] = { .rshift = 0x31, .overflow = 0x80 }, + [0x64] = { .rshift = 0x32, .overflow = 0x00 }, + [0x65] = { .rshift = 0x32, .overflow = 0x80 }, + [0x66] = { .rshift = 0x33, .overflow = 0x00 }, + [0x67] = { .rshift = 0x33, .overflow = 0x80 }, + [0x68] = { .rshift = 0x34, .overflow = 0x00 }, + [0x69] = { .rshift = 0x34, .overflow = 0x80 }, + [0x6a] = { .rshift = 0x35, .overflow = 0x00 }, + [0x6b] = { .rshift = 0x35, .overflow = 0x80 }, + [0x6c] = { .rshift = 0x36, .overflow = 0x00 }, + [0x6d] = { .rshift = 0x36, .overflow = 0x80 }, + [0x6e] = { .rshift = 0x37, .overflow = 0x00 }, + [0x6f] = { .rshift = 0x37, .overflow = 0x80 }, + [0x70] = { .rshift = 0x38, .overflow = 0x00 }, + [0x71] = { .rshift = 0x38, .overflow = 0x80 }, + [0x72] = { .rshift = 0x39, .overflow = 0x00 }, + [0x73] = { .rshift = 0x39, .overflow = 0x80 }, + [0x74] = { .rshift = 0x3a, .overflow = 0x00 }, + [0x75] = { .rshift = 0x3a, .overflow = 0x80 }, + [0x76] = { .rshift = 0x3b, .overflow = 0x00 }, + [0x77] = { .rshift = 0x3b, .overflow = 0x80 }, + [0x78] = { .rshift = 0x3c, .overflow = 0x00 }, + [0x79] = { .rshift = 0x3c, .overflow = 0x80 }, + [0x7a] = { .rshift = 0x3d, .overflow = 0x00 }, + [0x7b] = { .rshift = 0x3d, .overflow = 0x80 }, + [0x7c] = { .rshift = 0x3e, .overflow = 0x00 }, + [0x7d] = { .rshift = 0x3e, .overflow = 0x80 }, + [0x7e] = { .rshift = 0x3f, .overflow = 0x00 }, + [0x7f] = { .rshift = 0x3f, .overflow = 0x80 }, + [0x80] = { .rshift = 0x40, .overflow = 0x00 }, + [0x81] = { .rshift = 0x40, .overflow = 0x80 }, + [0x82] = { .rshift = 0x41, .overflow = 0x00 }, + [0x83] = { .rshift = 0x41, .overflow = 0x80 }, + [0x84] = { .rshift = 0x42, .overflow = 0x00 }, + [0x85] = { .rshift = 0x42, .overflow = 0x80 }, + [0x86] = { .rshift = 0x43, .overflow = 0x00 }, + [0x87] = { .rshift = 0x43, .overflow = 0x80 }, + [0x88] = { .rshift = 0x44, .overflow = 0x00 }, + [0x89] = { .rshift = 0x44, .overflow = 0x80 }, + [0x8a] = { .rshift = 0x45, .overflow = 0x00 }, + [0x8b] = { .rshift = 0x45, .overflow = 0x80 }, + [0x8c] = { .rshift = 0x46, .overflow = 0x00 }, + [0x8d] = { .rshift = 0x46, .overflow = 0x80 }, + [0x8e] = { .rshift = 0x47, .overflow = 0x00 }, + [0x8f] = { .rshift = 0x47, .overflow = 0x80 }, + [0x90] = { .rshift = 0x48, .overflow = 0x00 }, + [0x91] = { .rshift = 0x48, .overflow = 0x80 }, + [0x92] = { .rshift = 0x49, .overflow = 0x00 }, + [0x93] = { .rshift = 0x49, .overflow = 0x80 }, + [0x94] = { .rshift = 0x4a, .overflow = 0x00 }, + [0x95] = { .rshift = 0x4a, .overflow = 0x80 }, + [0x96] = { .rshift = 0x4b, .overflow = 0x00 }, + [0x97] = { .rshift = 0x4b, .overflow = 0x80 }, + [0x98] = { .rshift = 0x4c, .overflow = 0x00 }, + [0x99] = { .rshift = 0x4c, .overflow = 0x80 }, + [0x9a] = { .rshift = 0x4d, .overflow = 0x00 }, + [0x9b] = { .rshift = 0x4d, .overflow = 0x80 }, + [0x9c] = { .rshift = 0x4e, .overflow = 0x00 }, + [0x9d] = { .rshift = 0x4e, .overflow = 0x80 }, + [0x9e] = { .rshift = 0x4f, .overflow = 0x00 }, + [0x9f] = { .rshift = 0x4f, .overflow = 0x80 }, + [0xa0] = { .rshift = 0x50, .overflow = 0x00 }, + [0xa1] = { .rshift = 0x50, .overflow = 0x80 }, + [0xa2] = { .rshift = 0x51, .overflow = 0x00 }, + [0xa3] = { .rshift = 0x51, .overflow = 0x80 }, + [0xa4] = { .rshift = 0x52, .overflow = 0x00 }, + [0xa5] = { .rshift = 0x52, .overflow = 0x80 }, + [0xa6] = { .rshift = 0x53, .overflow = 0x00 }, + [0xa7] = { .rshift = 0x53, .overflow = 0x80 }, + [0xa8] = { .rshift = 0x54, .overflow = 0x00 }, + [0xa9] = { .rshift = 0x54, .overflow = 0x80 }, + [0xaa] = { .rshift = 0x55, .overflow = 0x00 }, + [0xab] = { .rshift = 0x55, .overflow = 0x80 }, + [0xac] = { .rshift = 0x56, .overflow = 0x00 }, + [0xad] = { .rshift = 0x56, .overflow = 0x80 }, + [0xae] = { .rshift = 0x57, .overflow = 0x00 }, + [0xaf] = { .rshift = 0x57, .overflow = 0x80 }, + [0xb0] = { .rshift = 0x58, .overflow = 0x00 }, + [0xb1] = { .rshift = 0x58, .overflow = 0x80 }, + [0xb2] = { .rshift = 0x59, .overflow = 0x00 }, + [0xb3] = { .rshift = 0x59, .overflow = 0x80 }, + [0xb4] = { .rshift = 0x5a, .overflow = 0x00 }, + [0xb5] = { .rshift = 0x5a, .overflow = 0x80 }, + [0xb6] = { .rshift = 0x5b, .overflow = 0x00 }, + [0xb7] = { .rshift = 0x5b, .overflow = 0x80 }, + [0xb8] = { .rshift = 0x5c, .overflow = 0x00 }, + [0xb9] = { .rshift = 0x5c, .overflow = 0x80 }, + [0xba] = { .rshift = 0x5d, .overflow = 0x00 }, + [0xbb] = { .rshift = 0x5d, .overflow = 0x80 }, + [0xbc] = { .rshift = 0x5e, .overflow = 0x00 }, + [0xbd] = { .rshift = 0x5e, .overflow = 0x80 }, + [0xbe] = { .rshift = 0x5f, .overflow = 0x00 }, + [0xbf] = { .rshift = 0x5f, .overflow = 0x80 }, + [0xc0] = { .rshift = 0x60, .overflow = 0x00 }, + [0xc1] = { .rshift = 0x60, .overflow = 0x80 }, + [0xc2] = { .rshift = 0x61, .overflow = 0x00 }, + [0xc3] = { .rshift = 0x61, .overflow = 0x80 }, + [0xc4] = { .rshift = 0x62, .overflow = 0x00 }, + [0xc5] = { .rshift = 0x62, .overflow = 0x80 }, + [0xc6] = { .rshift = 0x63, .overflow = 0x00 }, + [0xc7] = { .rshift = 0x63, .overflow = 0x80 }, + [0xc8] = { .rshift = 0x64, .overflow = 0x00 }, + [0xc9] = { .rshift = 0x64, .overflow = 0x80 }, + [0xca] = { .rshift = 0x65, .overflow = 0x00 }, + [0xcb] = { .rshift = 0x65, .overflow = 0x80 }, + [0xcc] = { .rshift = 0x66, .overflow = 0x00 }, + [0xcd] = { .rshift = 0x66, .overflow = 0x80 }, + [0xce] = { .rshift = 0x67, .overflow = 0x00 }, + [0xcf] = { .rshift = 0x67, .overflow = 0x80 }, + [0xd0] = { .rshift = 0x68, .overflow = 0x00 }, + [0xd1] = { .rshift = 0x68, .overflow = 0x80 }, + [0xd2] = { .rshift = 0x69, .overflow = 0x00 }, + [0xd3] = { .rshift = 0x69, .overflow = 0x80 }, + [0xd4] = { .rshift = 0x6a, .overflow = 0x00 }, + [0xd5] = { .rshift = 0x6a, .overflow = 0x80 }, + [0xd6] = { .rshift = 0x6b, .overflow = 0x00 }, + [0xd7] = { .rshift = 0x6b, .overflow = 0x80 }, + [0xd8] = { .rshift = 0x6c, .overflow = 0x00 }, + [0xd9] = { .rshift = 0x6c, .overflow = 0x80 }, + [0xda] = { .rshift = 0x6d, .overflow = 0x00 }, + [0xdb] = { .rshift = 0x6d, .overflow = 0x80 }, + [0xdc] = { .rshift = 0x6e, .overflow = 0x00 }, + [0xdd] = { .rshift = 0x6e, .overflow = 0x80 }, + [0xde] = { .rshift = 0x6f, .overflow = 0x00 }, + [0xdf] = { .rshift = 0x6f, .overflow = 0x80 }, + [0xe0] = { .rshift = 0x70, .overflow = 0x00 }, + [0xe1] = { .rshift = 0x70, .overflow = 0x80 }, + [0xe2] = { .rshift = 0x71, .overflow = 0x00 }, + [0xe3] = { .rshift = 0x71, .overflow = 0x80 }, + [0xe4] = { .rshift = 0x72, .overflow = 0x00 }, + [0xe5] = { .rshift = 0x72, .overflow = 0x80 }, + [0xe6] = { .rshift = 0x73, .overflow = 0x00 }, + [0xe7] = { .rshift = 0x73, .overflow = 0x80 }, + [0xe8] = { .rshift = 0x74, .overflow = 0x00 }, + [0xe9] = { .rshift = 0x74, .overflow = 0x80 }, + [0xea] = { .rshift = 0x75, .overflow = 0x00 }, + [0xeb] = { .rshift = 0x75, .overflow = 0x80 }, + [0xec] = { .rshift = 0x76, .overflow = 0x00 }, + [0xed] = { .rshift = 0x76, .overflow = 0x80 }, + [0xee] = { .rshift = 0x77, .overflow = 0x00 }, + [0xef] = { .rshift = 0x77, .overflow = 0x80 }, + [0xf0] = { .rshift = 0x78, .overflow = 0x00 }, + [0xf1] = { .rshift = 0x78, .overflow = 0x80 }, + [0xf2] = { .rshift = 0x79, .overflow = 0x00 }, + [0xf3] = { .rshift = 0x79, .overflow = 0x80 }, + [0xf4] = { .rshift = 0x7a, .overflow = 0x00 }, + [0xf5] = { .rshift = 0x7a, .overflow = 0x80 }, + [0xf6] = { .rshift = 0x7b, .overflow = 0x00 }, + [0xf7] = { .rshift = 0x7b, .overflow = 0x80 }, + [0xf8] = { .rshift = 0x7c, .overflow = 0x00 }, + [0xf9] = { .rshift = 0x7c, .overflow = 0x80 }, + [0xfa] = { .rshift = 0x7d, .overflow = 0x00 }, + [0xfb] = { .rshift = 0x7d, .overflow = 0x80 }, + [0xfc] = { .rshift = 0x7e, .overflow = 0x00 }, + [0xfd] = { .rshift = 0x7e, .overflow = 0x80 }, + [0xfe] = { .rshift = 0x7f, .overflow = 0x00 }, + [0xff] = { .rshift = 0x7f, .overflow = 0x80 }, + }; + uint8_t i; + uint8_t overflow = 0; + + for (i = 0; i < AES_BLOCK_SIZE; i++) { + const struct aes_block_rshift_entry *e = &aes_block_rshift_table[in[i]]; + out[i] = e->rshift | overflow; + overflow = e->overflow; + } +} +#endif /* LIB_CRYPTO_AES_H */ |