diff options
Diffstat (limited to 'src/crypto/isa-l/isa-l_crypto/sha256_mb/sha256_ref.c')
| -rw-r--r-- | src/crypto/isa-l/isa-l_crypto/sha256_mb/sha256_ref.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/crypto/isa-l/isa-l_crypto/sha256_mb/sha256_ref.c b/src/crypto/isa-l/isa-l_crypto/sha256_mb/sha256_ref.c new file mode 100644 index 000000000..2b23c3471 --- /dev/null +++ b/src/crypto/isa-l/isa-l_crypto/sha256_mb/sha256_ref.c @@ -0,0 +1,212 @@ +/********************************************************************** + Copyright(c) 2011-2016 Intel Corporation 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 Intel Corporation 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 + OWNER 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 <string.h> +#include "sha256_mb.h" + +//////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////// +// Reference SHA256 Functions +//////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////// + +#define H0 0x6a09e667 +#define H1 0xbb67ae85 +#define H2 0x3c6ef372 +#define H3 0xa54ff53a +#define H4 0x510e527f +#define H5 0x9b05688c +#define H6 0x1f83d9ab +#define H7 0x5be0cd19 + +#define ror32(x, r) (((x)>>(r)) ^ ((x)<<(32-(r)))) +#define bswap(x) (((x)<<24) | (((x)&0xff00)<<8) | (((x)&0xff0000)>>8) | ((x)>>24)) + +#define W(x) w[(x) & 15] + +#define S0(w) (ror32(w,7) ^ ror32(w,18) ^ (w >> 3)) +#define S1(w) (ror32(w,17) ^ ror32(w,19) ^ (w >> 10)) + +#define s0(a) (ror32(a,2) ^ ror32(a,13) ^ ror32(a,22)) +#define s1(e) (ror32(e,6) ^ ror32(e,11) ^ ror32(e,25)) +#define maj(a,b,c) ((a & b) ^ (a & c) ^ (b & c)) +#define ch(e,f,g) ((e & f) ^ (g & ~e)) + +#define step(i,a,b,c,d,e,f,g,h,k) \ + if (i<16) W(i) = bswap(ww[i]); \ + else \ + W(i) = W(i-16) + S0(W(i-15)) + W(i-7) + S1(W(i-2)); \ + t2 = s0(a) + maj(a,b,c); \ + t1 = h + s1(e) + ch(e,f,g) + k + W(i); \ + d += t1; \ + h = t1 + t2; + +void sha256_single(const uint8_t * data, uint32_t digest[]); + +void sha256_ref(const uint8_t * input_data, uint32_t * digest, const uint32_t len) +{ + uint32_t i, j; + uint8_t buf[2 * SHA256_BLOCK_SIZE]; + union { + uint64_t uint; + uint8_t uchar[8]; + } convert; + uint8_t *p; + + digest[0] = H0; + digest[1] = H1; + digest[2] = H2; + digest[3] = H3; + digest[4] = H4; + digest[5] = H5; + digest[6] = H6; + digest[7] = H7; + + i = len; + while (i >= SHA256_BLOCK_SIZE) { + sha256_single(input_data, digest); + input_data += SHA256_BLOCK_SIZE; + i -= SHA256_BLOCK_SIZE; + } + + memcpy(buf, input_data, i); + buf[i++] = 0x80; + for (j = i; j < ((2 * SHA256_BLOCK_SIZE) - SHA256_PADLENGTHFIELD_SIZE); j++) + buf[j] = 0; + + if (i > SHA256_BLOCK_SIZE - SHA256_PADLENGTHFIELD_SIZE) + i = 2 * SHA256_BLOCK_SIZE; + else + i = SHA256_BLOCK_SIZE; + + convert.uint = 8 * len; + p = buf + i - 8; + p[0] = convert.uchar[7]; + p[1] = convert.uchar[6]; + p[2] = convert.uchar[5]; + p[3] = convert.uchar[4]; + p[4] = convert.uchar[3]; + p[5] = convert.uchar[2]; + p[6] = convert.uchar[1]; + p[7] = convert.uchar[0]; + + sha256_single(buf, digest); + if (i == 2 * SHA256_BLOCK_SIZE) + sha256_single(buf + SHA256_BLOCK_SIZE, digest); +} + +void sha256_single(const uint8_t * data, uint32_t digest[]) +{ + uint32_t a, b, c, d, e, f, g, h, t1, t2; + uint32_t w[16]; + uint32_t *ww = (uint32_t *) data; + + a = digest[0]; + b = digest[1]; + c = digest[2]; + d = digest[3]; + e = digest[4]; + f = digest[5]; + g = digest[6]; + h = digest[7]; + + step(0, a, b, c, d, e, f, g, h, 0x428a2f98); + step(1, h, a, b, c, d, e, f, g, 0x71374491); + step(2, g, h, a, b, c, d, e, f, 0xb5c0fbcf); + step(3, f, g, h, a, b, c, d, e, 0xe9b5dba5); + step(4, e, f, g, h, a, b, c, d, 0x3956c25b); + step(5, d, e, f, g, h, a, b, c, 0x59f111f1); + step(6, c, d, e, f, g, h, a, b, 0x923f82a4); + step(7, b, c, d, e, f, g, h, a, 0xab1c5ed5); + step(8, a, b, c, d, e, f, g, h, 0xd807aa98); + step(9, h, a, b, c, d, e, f, g, 0x12835b01); + step(10, g, h, a, b, c, d, e, f, 0x243185be); + step(11, f, g, h, a, b, c, d, e, 0x550c7dc3); + step(12, e, f, g, h, a, b, c, d, 0x72be5d74); + step(13, d, e, f, g, h, a, b, c, 0x80deb1fe); + step(14, c, d, e, f, g, h, a, b, 0x9bdc06a7); + step(15, b, c, d, e, f, g, h, a, 0xc19bf174); + step(16, a, b, c, d, e, f, g, h, 0xe49b69c1); + step(17, h, a, b, c, d, e, f, g, 0xefbe4786); + step(18, g, h, a, b, c, d, e, f, 0x0fc19dc6); + step(19, f, g, h, a, b, c, d, e, 0x240ca1cc); + step(20, e, f, g, h, a, b, c, d, 0x2de92c6f); + step(21, d, e, f, g, h, a, b, c, 0x4a7484aa); + step(22, c, d, e, f, g, h, a, b, 0x5cb0a9dc); + step(23, b, c, d, e, f, g, h, a, 0x76f988da); + step(24, a, b, c, d, e, f, g, h, 0x983e5152); + step(25, h, a, b, c, d, e, f, g, 0xa831c66d); + step(26, g, h, a, b, c, d, e, f, 0xb00327c8); + step(27, f, g, h, a, b, c, d, e, 0xbf597fc7); + step(28, e, f, g, h, a, b, c, d, 0xc6e00bf3); + step(29, d, e, f, g, h, a, b, c, 0xd5a79147); + step(30, c, d, e, f, g, h, a, b, 0x06ca6351); + step(31, b, c, d, e, f, g, h, a, 0x14292967); + step(32, a, b, c, d, e, f, g, h, 0x27b70a85); + step(33, h, a, b, c, d, e, f, g, 0x2e1b2138); + step(34, g, h, a, b, c, d, e, f, 0x4d2c6dfc); + step(35, f, g, h, a, b, c, d, e, 0x53380d13); + step(36, e, f, g, h, a, b, c, d, 0x650a7354); + step(37, d, e, f, g, h, a, b, c, 0x766a0abb); + step(38, c, d, e, f, g, h, a, b, 0x81c2c92e); + step(39, b, c, d, e, f, g, h, a, 0x92722c85); + step(40, a, b, c, d, e, f, g, h, 0xa2bfe8a1); + step(41, h, a, b, c, d, e, f, g, 0xa81a664b); + step(42, g, h, a, b, c, d, e, f, 0xc24b8b70); + step(43, f, g, h, a, b, c, d, e, 0xc76c51a3); + step(44, e, f, g, h, a, b, c, d, 0xd192e819); + step(45, d, e, f, g, h, a, b, c, 0xd6990624); + step(46, c, d, e, f, g, h, a, b, 0xf40e3585); + step(47, b, c, d, e, f, g, h, a, 0x106aa070); + step(48, a, b, c, d, e, f, g, h, 0x19a4c116); + step(49, h, a, b, c, d, e, f, g, 0x1e376c08); + step(50, g, h, a, b, c, d, e, f, 0x2748774c); + step(51, f, g, h, a, b, c, d, e, 0x34b0bcb5); + step(52, e, f, g, h, a, b, c, d, 0x391c0cb3); + step(53, d, e, f, g, h, a, b, c, 0x4ed8aa4a); + step(54, c, d, e, f, g, h, a, b, 0x5b9cca4f); + step(55, b, c, d, e, f, g, h, a, 0x682e6ff3); + step(56, a, b, c, d, e, f, g, h, 0x748f82ee); + step(57, h, a, b, c, d, e, f, g, 0x78a5636f); + step(58, g, h, a, b, c, d, e, f, 0x84c87814); + step(59, f, g, h, a, b, c, d, e, 0x8cc70208); + step(60, e, f, g, h, a, b, c, d, 0x90befffa); + step(61, d, e, f, g, h, a, b, c, 0xa4506ceb); + step(62, c, d, e, f, g, h, a, b, 0xbef9a3f7); + step(63, b, c, d, e, f, g, h, a, 0xc67178f2); + + digest[0] += a; + digest[1] += b; + digest[2] += c; + digest[3] += d; + digest[4] += e; + digest[5] += f; + digest[6] += g; + digest[7] += h; +} |