mirror of
https://github.com/servalproject/serval-dna.git
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321 lines
10 KiB
C
321 lines
10 KiB
C
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/*-
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* Copyright 2005,2007,2009 Colin Percival
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/types.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stddef.h>
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#include "sha2.h"
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/* Avoid namespace collisions with BSD <sys/endian.h>. */
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#define be64dec _sha512_be64dec
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#define be64enc _sha512_be64enc
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static inline uint64_t
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be64dec(const void *pp)
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{
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const uint8_t *p = (uint8_t const *)pp;
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return ((uint64_t)(p[7]) + ((uint64_t)(p[6]) << 8) +
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((uint64_t)(p[5]) << 16) + ((uint64_t)(p[4]) << 24) +
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((uint64_t)(p[3]) << 32) + ((uint64_t)(p[2]) << 40) +
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((uint64_t)(p[1]) << 48) + ((uint64_t)(p[0]) << 56));
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}
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static inline void
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be64enc(void *pp, uint64_t x)
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{
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uint8_t *p = (uint8_t *)pp;
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p[7] = x & 0xff;
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p[6] = (x >> 8) & 0xff;
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p[5] = (x >> 16) & 0xff;
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p[4] = (x >> 24) & 0xff;
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p[3] = (x >> 32) & 0xff;
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p[2] = (x >> 40) & 0xff;
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p[1] = (x >> 48) & 0xff;
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p[0] = (x >> 56) & 0xff;
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}
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static void
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be64enc_vect(unsigned char *dst, const uint64_t *src, size_t len)
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{
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size_t i;
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for (i = 0; i < len / 8; i++) {
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be64enc(dst + i * 8, src[i]);
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}
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}
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static void
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be64dec_vect(uint64_t *dst, const unsigned char *src, size_t len)
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{
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size_t i;
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for (i = 0; i < len / 8; i++) {
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dst[i] = be64dec(src + i * 8);
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}
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}
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#define Ch(x, y, z) ((x & (y ^ z)) ^ z)
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#define Maj(x, y, z) ((x & (y | z)) | (y & z))
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#define SHR(x, n) (x >> n)
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#define ROTR(x, n) ((x >> n) | (x << (64 - n)))
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#define S0(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39))
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#define S1(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41))
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#define s0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))
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#define s1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHR(x, 6))
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#define RND(a, b, c, d, e, f, g, h, k) \
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t0 = h + S1(e) + Ch(e, f, g) + k; \
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t1 = S0(a) + Maj(a, b, c); \
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d += t0; \
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h = t0 + t1;
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#define RNDr(S, W, i, k) \
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RND(S[(80 - i) % 8], S[(81 - i) % 8], \
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S[(82 - i) % 8], S[(83 - i) % 8], \
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S[(84 - i) % 8], S[(85 - i) % 8], \
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S[(86 - i) % 8], S[(87 - i) % 8], \
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W[i] + k)
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static void
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SHA512_Transform(uint64_t *state, const unsigned char block[128])
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{
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uint64_t W[80];
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uint64_t S[8];
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uint64_t t0, t1;
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int i;
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be64dec_vect(W, block, 128);
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for (i = 16; i < 80; i++) {
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W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16];
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}
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memcpy(S, state, 64);
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RNDr(S, W, 0, 0x428a2f98d728ae22ULL);
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RNDr(S, W, 1, 0x7137449123ef65cdULL);
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RNDr(S, W, 2, 0xb5c0fbcfec4d3b2fULL);
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RNDr(S, W, 3, 0xe9b5dba58189dbbcULL);
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RNDr(S, W, 4, 0x3956c25bf348b538ULL);
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RNDr(S, W, 5, 0x59f111f1b605d019ULL);
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RNDr(S, W, 6, 0x923f82a4af194f9bULL);
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RNDr(S, W, 7, 0xab1c5ed5da6d8118ULL);
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RNDr(S, W, 8, 0xd807aa98a3030242ULL);
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RNDr(S, W, 9, 0x12835b0145706fbeULL);
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RNDr(S, W, 10, 0x243185be4ee4b28cULL);
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RNDr(S, W, 11, 0x550c7dc3d5ffb4e2ULL);
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RNDr(S, W, 12, 0x72be5d74f27b896fULL);
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RNDr(S, W, 13, 0x80deb1fe3b1696b1ULL);
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RNDr(S, W, 14, 0x9bdc06a725c71235ULL);
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RNDr(S, W, 15, 0xc19bf174cf692694ULL);
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RNDr(S, W, 16, 0xe49b69c19ef14ad2ULL);
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RNDr(S, W, 17, 0xefbe4786384f25e3ULL);
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RNDr(S, W, 18, 0x0fc19dc68b8cd5b5ULL);
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RNDr(S, W, 19, 0x240ca1cc77ac9c65ULL);
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RNDr(S, W, 20, 0x2de92c6f592b0275ULL);
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RNDr(S, W, 21, 0x4a7484aa6ea6e483ULL);
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RNDr(S, W, 22, 0x5cb0a9dcbd41fbd4ULL);
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RNDr(S, W, 23, 0x76f988da831153b5ULL);
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RNDr(S, W, 24, 0x983e5152ee66dfabULL);
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RNDr(S, W, 25, 0xa831c66d2db43210ULL);
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RNDr(S, W, 26, 0xb00327c898fb213fULL);
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RNDr(S, W, 27, 0xbf597fc7beef0ee4ULL);
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RNDr(S, W, 28, 0xc6e00bf33da88fc2ULL);
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RNDr(S, W, 29, 0xd5a79147930aa725ULL);
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RNDr(S, W, 30, 0x06ca6351e003826fULL);
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RNDr(S, W, 31, 0x142929670a0e6e70ULL);
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RNDr(S, W, 32, 0x27b70a8546d22ffcULL);
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RNDr(S, W, 33, 0x2e1b21385c26c926ULL);
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RNDr(S, W, 34, 0x4d2c6dfc5ac42aedULL);
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RNDr(S, W, 35, 0x53380d139d95b3dfULL);
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RNDr(S, W, 36, 0x650a73548baf63deULL);
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RNDr(S, W, 37, 0x766a0abb3c77b2a8ULL);
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RNDr(S, W, 38, 0x81c2c92e47edaee6ULL);
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RNDr(S, W, 39, 0x92722c851482353bULL);
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RNDr(S, W, 40, 0xa2bfe8a14cf10364ULL);
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RNDr(S, W, 41, 0xa81a664bbc423001ULL);
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RNDr(S, W, 42, 0xc24b8b70d0f89791ULL);
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RNDr(S, W, 43, 0xc76c51a30654be30ULL);
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RNDr(S, W, 44, 0xd192e819d6ef5218ULL);
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RNDr(S, W, 45, 0xd69906245565a910ULL);
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RNDr(S, W, 46, 0xf40e35855771202aULL);
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RNDr(S, W, 47, 0x106aa07032bbd1b8ULL);
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RNDr(S, W, 48, 0x19a4c116b8d2d0c8ULL);
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RNDr(S, W, 49, 0x1e376c085141ab53ULL);
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RNDr(S, W, 50, 0x2748774cdf8eeb99ULL);
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RNDr(S, W, 51, 0x34b0bcb5e19b48a8ULL);
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RNDr(S, W, 52, 0x391c0cb3c5c95a63ULL);
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RNDr(S, W, 53, 0x4ed8aa4ae3418acbULL);
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RNDr(S, W, 54, 0x5b9cca4f7763e373ULL);
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RNDr(S, W, 55, 0x682e6ff3d6b2b8a3ULL);
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RNDr(S, W, 56, 0x748f82ee5defb2fcULL);
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RNDr(S, W, 57, 0x78a5636f43172f60ULL);
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RNDr(S, W, 58, 0x84c87814a1f0ab72ULL);
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RNDr(S, W, 59, 0x8cc702081a6439ecULL);
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RNDr(S, W, 60, 0x90befffa23631e28ULL);
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RNDr(S, W, 61, 0xa4506cebde82bde9ULL);
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RNDr(S, W, 62, 0xbef9a3f7b2c67915ULL);
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RNDr(S, W, 63, 0xc67178f2e372532bULL);
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RNDr(S, W, 64, 0xca273eceea26619cULL);
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RNDr(S, W, 65, 0xd186b8c721c0c207ULL);
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RNDr(S, W, 66, 0xeada7dd6cde0eb1eULL);
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RNDr(S, W, 67, 0xf57d4f7fee6ed178ULL);
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RNDr(S, W, 68, 0x06f067aa72176fbaULL);
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RNDr(S, W, 69, 0x0a637dc5a2c898a6ULL);
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RNDr(S, W, 70, 0x113f9804bef90daeULL);
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RNDr(S, W, 71, 0x1b710b35131c471bULL);
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RNDr(S, W, 72, 0x28db77f523047d84ULL);
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RNDr(S, W, 73, 0x32caab7b40c72493ULL);
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RNDr(S, W, 74, 0x3c9ebe0a15c9bebcULL);
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RNDr(S, W, 75, 0x431d67c49c100d4cULL);
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RNDr(S, W, 76, 0x4cc5d4becb3e42b6ULL);
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RNDr(S, W, 77, 0x597f299cfc657e2aULL);
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RNDr(S, W, 78, 0x5fcb6fab3ad6faecULL);
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RNDr(S, W, 79, 0x6c44198c4a475817ULL);
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for (i = 0; i < 8; i++) {
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state[i] += S[i];
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}
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bzero((void *) W, sizeof W);
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bzero((void *) S, sizeof S);
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bzero((void *) &t0, sizeof t0);
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bzero((void *) &t1, sizeof t1);
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}
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static unsigned char PAD[128] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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static void
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SHA512_Pad(crypto_hash_sha512_state *state)
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{
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unsigned char len[16];
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uint64_t r, plen;
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be64enc_vect(len, state->count, 16);
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r = (state->count[1] >> 3) & 0x7f;
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plen = (r < 112) ? (112 - r) : (240 - r);
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crypto_hash_sha512_update(state, PAD, (unsigned long long) plen);
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crypto_hash_sha512_update(state, len, 16);
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}
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int
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crypto_hash_sha512_init(crypto_hash_sha512_state *state)
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{
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static const uint64_t sha512_initstate[8] = {
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0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
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0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
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0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
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0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
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};
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state->count[0] = state->count[1] = (uint64_t) 0U;
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memcpy(state->state, sha512_initstate, sizeof sha512_initstate);
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return 0;
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}
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int
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crypto_hash_sha512_update(crypto_hash_sha512_state *state,
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const unsigned char *in,
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unsigned long long inlen)
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{
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uint64_t bitlen[2];
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uint64_t r;
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const unsigned char *src = in;
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r = (state->count[1] >> 3) & 0x7f;
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bitlen[1] = ((uint64_t)inlen) << 3;
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bitlen[0] = ((uint64_t)inlen) >> 61;
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/* LCOV_EXCL_START */
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if ((state->count[1] += bitlen[1]) < bitlen[1]) {
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state->count[0]++;
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}
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/* LCOV_EXCL_STOP */
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state->count[0] += bitlen[0];
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if (inlen < 128 - r) {
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memcpy(&state->buf[r], src, inlen);
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return 0;
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}
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memcpy(&state->buf[r], src, 128 - r);
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SHA512_Transform(state->state, state->buf);
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src += 128 - r;
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inlen -= 128 - r;
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while (inlen >= 128) {
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SHA512_Transform(state->state, src);
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src += 128;
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inlen -= 128;
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}
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memcpy(state->buf, src, inlen); /* inlen < 128 */
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return 0;
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}
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int
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crypto_hash_sha512_final(crypto_hash_sha512_state *state,
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unsigned char *out)
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{
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SHA512_Pad(state);
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be64enc_vect(out, state->state, 64);
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bzero((void *) state, sizeof *state);
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return 0;
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}
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int
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crypto_hash_sha512(unsigned char *out, const unsigned char *in,
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unsigned long long inlen)
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{
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crypto_hash_sha512_state state;
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crypto_hash_sha512_init(&state);
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crypto_hash_sha512_update(&state, in, inlen);
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crypto_hash_sha512_final(&state, out);
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return 0;
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}
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