338 lines
12 KiB
C
338 lines
12 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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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 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#include <openssl/sha.h>
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#include <string.h>
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#include <openssl/mem.h>
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#include "../../internal.h"
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#if !defined(OPENSSL_NO_ASM) && \
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(defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
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defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
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#define SHA256_ASM
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#endif
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int SHA224_Init(SHA256_CTX *sha) {
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OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
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sha->h[0] = 0xc1059ed8UL;
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sha->h[1] = 0x367cd507UL;
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sha->h[2] = 0x3070dd17UL;
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sha->h[3] = 0xf70e5939UL;
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sha->h[4] = 0xffc00b31UL;
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sha->h[5] = 0x68581511UL;
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sha->h[6] = 0x64f98fa7UL;
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sha->h[7] = 0xbefa4fa4UL;
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sha->md_len = SHA224_DIGEST_LENGTH;
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return 1;
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}
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int SHA256_Init(SHA256_CTX *sha) {
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OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
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sha->h[0] = 0x6a09e667UL;
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sha->h[1] = 0xbb67ae85UL;
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sha->h[2] = 0x3c6ef372UL;
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sha->h[3] = 0xa54ff53aUL;
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sha->h[4] = 0x510e527fUL;
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sha->h[5] = 0x9b05688cUL;
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sha->h[6] = 0x1f83d9abUL;
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sha->h[7] = 0x5be0cd19UL;
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sha->md_len = SHA256_DIGEST_LENGTH;
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return 1;
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}
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uint8_t *SHA224(const uint8_t *data, size_t len, uint8_t *out) {
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SHA256_CTX ctx;
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SHA224_Init(&ctx);
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SHA224_Update(&ctx, data, len);
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SHA224_Final(out, &ctx);
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OPENSSL_cleanse(&ctx, sizeof(ctx));
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return out;
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}
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uint8_t *SHA256(const uint8_t *data, size_t len, uint8_t *out) {
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SHA256_CTX ctx;
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SHA256_Init(&ctx);
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SHA256_Update(&ctx, data, len);
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SHA256_Final(out, &ctx);
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OPENSSL_cleanse(&ctx, sizeof(ctx));
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return out;
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}
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int SHA224_Update(SHA256_CTX *ctx, const void *data, size_t len) {
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return SHA256_Update(ctx, data, len);
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}
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int SHA224_Final(uint8_t *md, SHA256_CTX *ctx) {
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return SHA256_Final(md, ctx);
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}
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#define DATA_ORDER_IS_BIG_ENDIAN
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#define HASH_CTX SHA256_CTX
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#define HASH_CBLOCK 64
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// Note that FIPS180-2 discusses "Truncation of the Hash Function Output."
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// default: case below covers for it. It's not clear however if it's permitted
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// to truncate to amount of bytes not divisible by 4. I bet not, but if it is,
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// then default: case shall be extended. For reference. Idea behind separate
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// cases for pre-defined lenghts is to let the compiler decide if it's
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// appropriate to unroll small loops.
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//
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// TODO(davidben): The small |md_len| case is one of the few places a low-level
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// hash 'final' function can fail. This should never happen.
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#define HASH_MAKE_STRING(c, s) \
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do { \
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uint32_t ll; \
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unsigned int nn; \
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switch ((c)->md_len) { \
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case SHA224_DIGEST_LENGTH: \
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for (nn = 0; nn < SHA224_DIGEST_LENGTH / 4; nn++) { \
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ll = (c)->h[nn]; \
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HOST_l2c(ll, (s)); \
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} \
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break; \
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case SHA256_DIGEST_LENGTH: \
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for (nn = 0; nn < SHA256_DIGEST_LENGTH / 4; nn++) { \
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ll = (c)->h[nn]; \
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HOST_l2c(ll, (s)); \
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} \
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break; \
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default: \
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if ((c)->md_len > SHA256_DIGEST_LENGTH) { \
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return 0; \
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} \
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for (nn = 0; nn < (c)->md_len / 4; nn++) { \
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ll = (c)->h[nn]; \
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HOST_l2c(ll, (s)); \
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} \
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break; \
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} \
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} while (0)
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#define HASH_UPDATE SHA256_Update
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#define HASH_TRANSFORM SHA256_Transform
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#define HASH_FINAL SHA256_Final
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#define HASH_BLOCK_DATA_ORDER sha256_block_data_order
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#ifndef SHA256_ASM
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static
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#endif
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void sha256_block_data_order(uint32_t *state, const uint8_t *in, size_t num);
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#include "../digest/md32_common.h"
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#ifndef SHA256_ASM
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static const uint32_t K256[64] = {
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0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
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0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
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0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
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0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
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0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
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0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
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0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
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0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
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0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
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0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
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0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
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0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
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0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL};
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#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
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// FIPS specification refers to right rotations, while our ROTATE macro
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// is left one. This is why you might notice that rotation coefficients
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// differ from those observed in FIPS document by 32-N...
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#define Sigma0(x) (ROTATE((x), 30) ^ ROTATE((x), 19) ^ ROTATE((x), 10))
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#define Sigma1(x) (ROTATE((x), 26) ^ ROTATE((x), 21) ^ ROTATE((x), 7))
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#define sigma0(x) (ROTATE((x), 25) ^ ROTATE((x), 14) ^ ((x) >> 3))
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#define sigma1(x) (ROTATE((x), 15) ^ ROTATE((x), 13) ^ ((x) >> 10))
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#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
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#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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#define ROUND_00_15(i, a, b, c, d, e, f, g, h) \
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do { \
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T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i]; \
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h = Sigma0(a) + Maj(a, b, c); \
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d += T1; \
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h += T1; \
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} while (0)
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#define ROUND_16_63(i, a, b, c, d, e, f, g, h, X) \
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do { \
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s0 = X[(i + 1) & 0x0f]; \
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s0 = sigma0(s0); \
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s1 = X[(i + 14) & 0x0f]; \
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s1 = sigma1(s1); \
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T1 = X[(i) & 0x0f] += s0 + s1 + X[(i + 9) & 0x0f]; \
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ROUND_00_15(i, a, b, c, d, e, f, g, h); \
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} while (0)
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static void sha256_block_data_order(uint32_t *state, const uint8_t *data,
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size_t num) {
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uint32_t a, b, c, d, e, f, g, h, s0, s1, T1;
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uint32_t X[16];
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int i;
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while (num--) {
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a = state[0];
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b = state[1];
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c = state[2];
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d = state[3];
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e = state[4];
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f = state[5];
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g = state[6];
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h = state[7];
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uint32_t l;
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HOST_c2l(data, l);
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T1 = X[0] = l;
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ROUND_00_15(0, a, b, c, d, e, f, g, h);
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HOST_c2l(data, l);
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T1 = X[1] = l;
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ROUND_00_15(1, h, a, b, c, d, e, f, g);
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HOST_c2l(data, l);
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T1 = X[2] = l;
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ROUND_00_15(2, g, h, a, b, c, d, e, f);
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HOST_c2l(data, l);
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T1 = X[3] = l;
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ROUND_00_15(3, f, g, h, a, b, c, d, e);
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HOST_c2l(data, l);
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T1 = X[4] = l;
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ROUND_00_15(4, e, f, g, h, a, b, c, d);
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HOST_c2l(data, l);
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T1 = X[5] = l;
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ROUND_00_15(5, d, e, f, g, h, a, b, c);
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HOST_c2l(data, l);
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T1 = X[6] = l;
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ROUND_00_15(6, c, d, e, f, g, h, a, b);
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HOST_c2l(data, l);
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T1 = X[7] = l;
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ROUND_00_15(7, b, c, d, e, f, g, h, a);
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HOST_c2l(data, l);
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T1 = X[8] = l;
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ROUND_00_15(8, a, b, c, d, e, f, g, h);
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HOST_c2l(data, l);
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T1 = X[9] = l;
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ROUND_00_15(9, h, a, b, c, d, e, f, g);
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HOST_c2l(data, l);
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T1 = X[10] = l;
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ROUND_00_15(10, g, h, a, b, c, d, e, f);
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HOST_c2l(data, l);
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T1 = X[11] = l;
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ROUND_00_15(11, f, g, h, a, b, c, d, e);
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HOST_c2l(data, l);
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T1 = X[12] = l;
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ROUND_00_15(12, e, f, g, h, a, b, c, d);
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HOST_c2l(data, l);
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T1 = X[13] = l;
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ROUND_00_15(13, d, e, f, g, h, a, b, c);
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HOST_c2l(data, l);
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T1 = X[14] = l;
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ROUND_00_15(14, c, d, e, f, g, h, a, b);
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HOST_c2l(data, l);
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T1 = X[15] = l;
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ROUND_00_15(15, b, c, d, e, f, g, h, a);
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for (i = 16; i < 64; i += 8) {
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ROUND_16_63(i + 0, a, b, c, d, e, f, g, h, X);
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ROUND_16_63(i + 1, h, a, b, c, d, e, f, g, X);
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ROUND_16_63(i + 2, g, h, a, b, c, d, e, f, X);
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ROUND_16_63(i + 3, f, g, h, a, b, c, d, e, X);
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ROUND_16_63(i + 4, e, f, g, h, a, b, c, d, X);
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ROUND_16_63(i + 5, d, e, f, g, h, a, b, c, X);
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ROUND_16_63(i + 6, c, d, e, f, g, h, a, b, X);
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ROUND_16_63(i + 7, b, c, d, e, f, g, h, a, X);
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}
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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state[4] += e;
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state[5] += f;
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state[6] += g;
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state[7] += h;
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}
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}
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#endif // !SHA256_ASM
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#undef DATA_ORDER_IS_BIG_ENDIAN
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#undef HASH_CTX
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#undef HASH_CBLOCK
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#undef HASH_MAKE_STRING
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#undef HASH_UPDATE
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#undef HASH_TRANSFORM
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#undef HASH_FINAL
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#undef HASH_BLOCK_DATA_ORDER
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#undef ROTATE
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#undef Sigma0
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#undef Sigma1
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#undef sigma0
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#undef sigma1
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#undef Ch
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#undef Maj
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#undef ROUND_00_15
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#undef ROUND_16_63
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#undef HOST_c2l
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#undef HOST_l2c
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