Changeset View
Changeset View
Standalone View
Standalone View
head/sys/crypto/sha2/sha512c.c
Property | Old Value | New Value |
---|---|---|
svn:keywords | null | FreeBSD=%H \ No newline at end of property |
/*- | |||||
* 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> | |||||
#ifdef _KERNEL | |||||
#include <sys/systm.h> | |||||
#else | |||||
#include <string.h> | |||||
#endif | |||||
#include "sha512.h" | |||||
#include "sha384.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[SHA512_BLOCK_LENGTH]) | |||||
{ | |||||
uint64_t W[80]; | |||||
uint64_t S[8]; | |||||
uint64_t t0, t1; | |||||
int i; | |||||
/* 1. Prepare message schedule W. */ | |||||
be64dec_vect(W, block, SHA512_BLOCK_LENGTH); | |||||
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, SHA512_DIGEST_LENGTH); | |||||
/* 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[SHA512_BLOCK_LENGTH] = { | |||||
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 < SHA512_BLOCK_LENGTH - r) { | |||||
memcpy(&ctx->buf[r], src, len); | |||||
return; | |||||
} | |||||
/* Finish the current block */ | |||||
memcpy(&ctx->buf[r], src, SHA512_BLOCK_LENGTH - r); | |||||
SHA512_Transform(ctx->state, ctx->buf); | |||||
src += SHA512_BLOCK_LENGTH - r; | |||||
len -= SHA512_BLOCK_LENGTH - r; | |||||
/* Perform complete blocks */ | |||||
while (len >= SHA512_BLOCK_LENGTH) { | |||||
SHA512_Transform(ctx->state, src); | |||||
src += SHA512_BLOCK_LENGTH; | |||||
len -= SHA512_BLOCK_LENGTH; | |||||
} | |||||
/* 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[SHA512_DIGEST_LENGTH], SHA512_CTX * ctx) | |||||
{ | |||||
/* Add padding */ | |||||
SHA512_Pad(ctx); | |||||
/* Write the hash */ | |||||
be64enc_vect(digest, ctx->state, SHA512_DIGEST_LENGTH); | |||||
/* Clear the context state */ | |||||
memset((void *)ctx, 0, sizeof(*ctx)); | |||||
} | |||||
/*** SHA-384: *********************************************************/ | |||||
/* | |||||
* the SHA384 and SHA512 transforms are identical, so SHA384 is skipped | |||||
*/ | |||||
/* SHA-384 initialization. Begins a SHA-384 operation. */ | |||||
void | |||||
SHA384_Init(SHA384_CTX * ctx) | |||||
{ | |||||
/* Zero bits processed so far */ | |||||
ctx->count[0] = ctx->count[1] = 0; | |||||
/* Magic initialization constants */ | |||||
ctx->state[0] = 0xcbbb9d5dc1059ed8ULL; | |||||
ctx->state[1] = 0x629a292a367cd507ULL; | |||||
ctx->state[2] = 0x9159015a3070dd17ULL; | |||||
ctx->state[3] = 0x152fecd8f70e5939ULL; | |||||
ctx->state[4] = 0x67332667ffc00b31ULL; | |||||
ctx->state[5] = 0x8eb44a8768581511ULL; | |||||
ctx->state[6] = 0xdb0c2e0d64f98fa7ULL; | |||||
ctx->state[7] = 0x47b5481dbefa4fa4ULL; | |||||
} | |||||
/* Add bytes into the SHA-384 hash */ | |||||
void | |||||
SHA384_Update(SHA384_CTX * ctx, const void *in, size_t len) | |||||
{ | |||||
SHA512_Update((SHA512_CTX *)ctx, in, len); | |||||
} | |||||
/* | |||||
* SHA-384 finalization. Pads the input data, exports the hash value, | |||||
* and clears the context state. | |||||
*/ | |||||
void | |||||
SHA384_Final(unsigned char digest[SHA384_DIGEST_LENGTH], SHA384_CTX * ctx) | |||||
{ | |||||
/* Add padding */ | |||||
SHA512_Pad((SHA512_CTX *)ctx); | |||||
/* Write the hash */ | |||||
be64enc_vect(digest, ctx->state, SHA384_DIGEST_LENGTH); | |||||
/* 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); | |||||
#undef SHA384_Init | |||||
__weak_reference(_libmd_SHA384_Init, SHA384_Init); | |||||
#undef SHA384_Update | |||||
__weak_reference(_libmd_SHA384_Update, SHA384_Update); | |||||
#undef SHA384_Final | |||||
__weak_reference(_libmd_SHA384_Final, SHA384_Final); | |||||
#endif |