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Diffstat (limited to 'lib/libmd/sha512c.c')
| -rw-r--r-- | lib/libmd/sha512c.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/lib/libmd/sha512c.c b/lib/libmd/sha512c.c deleted file mode 100644 index e5e52a8..0000000 --- a/lib/libmd/sha512c.c +++ /dev/null @@ -1,335 +0,0 @@ -/*- - * Copyright 2005 Colin Percival - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/endian.h> -#include <sys/types.h> - -#include <string.h> - -#include "sha512.h" - -#if BYTE_ORDER == BIG_ENDIAN - -/* Copy a vector of big-endian uint64_t into a vector of bytes */ -#define be64enc_vect(dst, src, len) \ - memcpy((void *)dst, (const void *)src, (size_t)len) - -/* Copy a vector of bytes into a vector of big-endian uint64_t */ -#define be64dec_vect(dst, src, len) \ - memcpy((void *)dst, (const void *)src, (size_t)len) - -#else /* BYTE_ORDER != BIG_ENDIAN */ - -/* - * Encode a length len/4 vector of (uint64_t) into a length len vector of - * (unsigned char) in big-endian form. Assumes len is a multiple of 8. - */ -static void -be64enc_vect(unsigned char *dst, const uint64_t *src, size_t len) -{ - size_t i; - - for (i = 0; i < len / 8; i++) - be64enc(dst + i * 8, src[i]); -} - -/* - * Decode a big-endian length len vector of (unsigned char) into a length - * len/4 vector of (uint64_t). Assumes len is a multiple of 8. - */ -static void -be64dec_vect(uint64_t *dst, const unsigned char *src, size_t len) -{ - size_t i; - - for (i = 0; i < len / 8; i++) - dst[i] = be64dec(src + i * 8); -} - -#endif /* BYTE_ORDER != BIG_ENDIAN */ - -/* Elementary functions used by SHA512 */ -#define Ch(x, y, z) ((x & (y ^ z)) ^ z) -#define Maj(x, y, z) ((x & (y | z)) | (y & z)) -#define SHR(x, n) (x >> n) -#define ROTR(x, n) ((x >> n) | (x << (64 - n))) -#define S0(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39)) -#define S1(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41)) -#define s0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7)) -#define s1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHR(x, 6)) - -/* SHA512 round function */ -#define RND(a, b, c, d, e, f, g, h, k) \ - t0 = h + S1(e) + Ch(e, f, g) + k; \ - t1 = S0(a) + Maj(a, b, c); \ - d += t0; \ - h = t0 + t1; - -/* Adjusted round function for rotating state */ -#define RNDr(S, W, i, k) \ - RND(S[(80 - i) % 8], S[(81 - i) % 8], \ - S[(82 - i) % 8], S[(83 - i) % 8], \ - S[(84 - i) % 8], S[(85 - i) % 8], \ - S[(86 - i) % 8], S[(87 - i) % 8], \ - W[i] + k) - -/* - * SHA512 block compression function. The 512-bit state is transformed via - * the 512-bit input block to produce a new state. - */ -static void -SHA512_Transform(uint64_t * state, const unsigned char block[128]) -{ - uint64_t W[80]; - uint64_t S[8]; - uint64_t t0, t1; - int i; - - /* 1. Prepare message schedule W. */ - be64dec_vect(W, block, 128); - for (i = 16; i < 80; i++) - W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16]; - - /* 2. Initialize working variables. */ - memcpy(S, state, 64); - - /* 3. Mix. */ - RNDr(S, W, 0, 0x428a2f98d728ae22ULL); - RNDr(S, W, 1, 0x7137449123ef65cdULL); - RNDr(S, W, 2, 0xb5c0fbcfec4d3b2fULL); - RNDr(S, W, 3, 0xe9b5dba58189dbbcULL); - RNDr(S, W, 4, 0x3956c25bf348b538ULL); - RNDr(S, W, 5, 0x59f111f1b605d019ULL); - RNDr(S, W, 6, 0x923f82a4af194f9bULL); - RNDr(S, W, 7, 0xab1c5ed5da6d8118ULL); - RNDr(S, W, 8, 0xd807aa98a3030242ULL); - RNDr(S, W, 9, 0x12835b0145706fbeULL); - RNDr(S, W, 10, 0x243185be4ee4b28cULL); - RNDr(S, W, 11, 0x550c7dc3d5ffb4e2ULL); - RNDr(S, W, 12, 0x72be5d74f27b896fULL); - RNDr(S, W, 13, 0x80deb1fe3b1696b1ULL); - RNDr(S, W, 14, 0x9bdc06a725c71235ULL); - RNDr(S, W, 15, 0xc19bf174cf692694ULL); - RNDr(S, W, 16, 0xe49b69c19ef14ad2ULL); - RNDr(S, W, 17, 0xefbe4786384f25e3ULL); - RNDr(S, W, 18, 0x0fc19dc68b8cd5b5ULL); - RNDr(S, W, 19, 0x240ca1cc77ac9c65ULL); - RNDr(S, W, 20, 0x2de92c6f592b0275ULL); - RNDr(S, W, 21, 0x4a7484aa6ea6e483ULL); - RNDr(S, W, 22, 0x5cb0a9dcbd41fbd4ULL); - RNDr(S, W, 23, 0x76f988da831153b5ULL); - RNDr(S, W, 24, 0x983e5152ee66dfabULL); - RNDr(S, W, 25, 0xa831c66d2db43210ULL); - RNDr(S, W, 26, 0xb00327c898fb213fULL); - RNDr(S, W, 27, 0xbf597fc7beef0ee4ULL); - RNDr(S, W, 28, 0xc6e00bf33da88fc2ULL); - RNDr(S, W, 29, 0xd5a79147930aa725ULL); - RNDr(S, W, 30, 0x06ca6351e003826fULL); - RNDr(S, W, 31, 0x142929670a0e6e70ULL); - RNDr(S, W, 32, 0x27b70a8546d22ffcULL); - RNDr(S, W, 33, 0x2e1b21385c26c926ULL); - RNDr(S, W, 34, 0x4d2c6dfc5ac42aedULL); - RNDr(S, W, 35, 0x53380d139d95b3dfULL); - RNDr(S, W, 36, 0x650a73548baf63deULL); - RNDr(S, W, 37, 0x766a0abb3c77b2a8ULL); - RNDr(S, W, 38, 0x81c2c92e47edaee6ULL); - RNDr(S, W, 39, 0x92722c851482353bULL); - RNDr(S, W, 40, 0xa2bfe8a14cf10364ULL); - RNDr(S, W, 41, 0xa81a664bbc423001ULL); - RNDr(S, W, 42, 0xc24b8b70d0f89791ULL); - RNDr(S, W, 43, 0xc76c51a30654be30ULL); - RNDr(S, W, 44, 0xd192e819d6ef5218ULL); - RNDr(S, W, 45, 0xd69906245565a910ULL); - RNDr(S, W, 46, 0xf40e35855771202aULL); - RNDr(S, W, 47, 0x106aa07032bbd1b8ULL); - RNDr(S, W, 48, 0x19a4c116b8d2d0c8ULL); - RNDr(S, W, 49, 0x1e376c085141ab53ULL); - RNDr(S, W, 50, 0x2748774cdf8eeb99ULL); - RNDr(S, W, 51, 0x34b0bcb5e19b48a8ULL); - RNDr(S, W, 52, 0x391c0cb3c5c95a63ULL); - RNDr(S, W, 53, 0x4ed8aa4ae3418acbULL); - RNDr(S, W, 54, 0x5b9cca4f7763e373ULL); - RNDr(S, W, 55, 0x682e6ff3d6b2b8a3ULL); - RNDr(S, W, 56, 0x748f82ee5defb2fcULL); - RNDr(S, W, 57, 0x78a5636f43172f60ULL); - RNDr(S, W, 58, 0x84c87814a1f0ab72ULL); - RNDr(S, W, 59, 0x8cc702081a6439ecULL); - RNDr(S, W, 60, 0x90befffa23631e28ULL); - RNDr(S, W, 61, 0xa4506cebde82bde9ULL); - RNDr(S, W, 62, 0xbef9a3f7b2c67915ULL); - RNDr(S, W, 63, 0xc67178f2e372532bULL); - RNDr(S, W, 64, 0xca273eceea26619cULL); - RNDr(S, W, 65, 0xd186b8c721c0c207ULL); - RNDr(S, W, 66, 0xeada7dd6cde0eb1eULL); - RNDr(S, W, 67, 0xf57d4f7fee6ed178ULL); - RNDr(S, W, 68, 0x06f067aa72176fbaULL); - RNDr(S, W, 69, 0x0a637dc5a2c898a6ULL); - RNDr(S, W, 70, 0x113f9804bef90daeULL); - RNDr(S, W, 71, 0x1b710b35131c471bULL); - RNDr(S, W, 72, 0x28db77f523047d84ULL); - RNDr(S, W, 73, 0x32caab7b40c72493ULL); - RNDr(S, W, 74, 0x3c9ebe0a15c9bebcULL); - RNDr(S, W, 75, 0x431d67c49c100d4cULL); - RNDr(S, W, 76, 0x4cc5d4becb3e42b6ULL); - RNDr(S, W, 77, 0x597f299cfc657e2aULL); - RNDr(S, W, 78, 0x5fcb6fab3ad6faecULL); - RNDr(S, W, 79, 0x6c44198c4a475817ULL); - - /* 4. Mix local working variables into global state */ - for (i = 0; i < 8; i++) - state[i] += S[i]; -} - -static unsigned char PAD[128] = { - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -/* Add padding and terminating bit-count. */ -static void -SHA512_Pad(SHA512_CTX * ctx) -{ - unsigned char len[16]; - uint64_t r, plen; - - /* - * Convert length to a vector of bytes -- we do this now rather - * than later because the length will change after we pad. - */ - be64enc_vect(len, ctx->count, 16); - - /* Add 1--128 bytes so that the resulting length is 112 mod 128 */ - r = (ctx->count[1] >> 3) & 0x7f; - plen = (r < 112) ? (112 - r) : (240 - r); - SHA512_Update(ctx, PAD, (size_t)plen); - - /* Add the terminating bit-count */ - SHA512_Update(ctx, len, 16); -} - -/* SHA-512 initialization. Begins a SHA-512 operation. */ -void -SHA512_Init(SHA512_CTX * ctx) -{ - - /* Zero bits processed so far */ - ctx->count[0] = ctx->count[1] = 0; - - /* Magic initialization constants */ - ctx->state[0] = 0x6a09e667f3bcc908ULL; - ctx->state[1] = 0xbb67ae8584caa73bULL; - ctx->state[2] = 0x3c6ef372fe94f82bULL; - ctx->state[3] = 0xa54ff53a5f1d36f1ULL; - ctx->state[4] = 0x510e527fade682d1ULL; - ctx->state[5] = 0x9b05688c2b3e6c1fULL; - ctx->state[6] = 0x1f83d9abfb41bd6bULL; - ctx->state[7] = 0x5be0cd19137e2179ULL; -} - -/* Add bytes into the hash */ -void -SHA512_Update(SHA512_CTX * ctx, const void *in, size_t len) -{ - uint64_t bitlen[2]; - uint64_t r; - const unsigned char *src = in; - - /* Number of bytes left in the buffer from previous updates */ - r = (ctx->count[1] >> 3) & 0x7f; - - /* Convert the length into a number of bits */ - bitlen[1] = ((uint64_t)len) << 3; - bitlen[0] = ((uint64_t)len) >> 61; - - /* Update number of bits */ - if ((ctx->count[1] += bitlen[1]) < bitlen[1]) - ctx->count[0]++; - ctx->count[0] += bitlen[0]; - - /* Handle the case where we don't need to perform any transforms */ - if (len < 128 - r) { - memcpy(&ctx->buf[r], src, len); - return; - } - - /* Finish the current block */ - memcpy(&ctx->buf[r], src, 128 - r); - SHA512_Transform(ctx->state, ctx->buf); - src += 128 - r; - len -= 128 - r; - - /* Perform complete blocks */ - while (len >= 128) { - SHA512_Transform(ctx->state, src); - src += 128; - len -= 128; - } - - /* Copy left over data into buffer */ - memcpy(ctx->buf, src, len); -} - -/* - * SHA-512 finalization. Pads the input data, exports the hash value, - * and clears the context state. - */ -void -SHA512_Final(unsigned char digest[64], SHA512_CTX * ctx) -{ - - /* Add padding */ - SHA512_Pad(ctx); - - /* Write the hash */ - be64enc_vect(digest, ctx->state, 64); - - /* Clear the context state */ - memset((void *)ctx, 0, sizeof(*ctx)); -} - -#ifdef WEAK_REFS -/* When building libmd, provide weak references. Note: this is not - activated in the context of compiling these sources for internal - use in libcrypt. - */ -#undef SHA512_Init -__weak_reference(_libmd_SHA512_Init, SHA512_Init); -#undef SHA512_Update -__weak_reference(_libmd_SHA512_Update, SHA512_Update); -#undef SHA512_Final -__weak_reference(_libmd_SHA512_Final, SHA512_Final); -#undef SHA512_Transform -__weak_reference(_libmd_SHA512_Transform, SHA512_Transform); -#endif |
