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boringssl/crypto/sha/sha1.c
David Benjamin 862c0aa880 Revert md_len removal from SHA256_CTX and SHA512_CTX. 
This reverts commits:
- 9158637142
- a90aa64302
- c0d8b83b44

It turns out code outside of BoringSSL also mismatches Init and Update/Final
functions. Since this is largely cosmetic, it's probably not worth the cost to
do this.

Change-Id: I14e7b299172939f69ced2114be45ccba1dbbb704
Reviewed-on: https://boringssl-review.googlesource.com/7793
Reviewed-by: Adam Langley <agl@google.com>
2016-04-27 19:01:23 +00:00

338 lines
14 KiB
C
Raw Blame History

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/sha.h>
#include <string.h>
#include <openssl/mem.h>
#if !defined(OPENSSL_NO_ASM) && \
(defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
#define SHA1_ASM
#endif
int SHA1_Init(SHA_CTX *sha) {
memset(sha, 0, sizeof(SHA_CTX));
sha->h[0] = 0x67452301UL;
sha->h[1] = 0xefcdab89UL;
sha->h[2] = 0x98badcfeUL;
sha->h[3] = 0x10325476UL;
sha->h[4] = 0xc3d2e1f0UL;
return 1;
}
uint8_t *SHA1(const uint8_t *data, size_t len, uint8_t *out) {
SHA_CTX ctx;
static uint8_t buf[SHA_DIGEST_LENGTH];
/* TODO(fork): remove this static buffer. */
if (out == NULL) {
out = buf;
}
if (!SHA1_Init(&ctx)) {
return NULL;
}
SHA1_Update(&ctx, data, len);
SHA1_Final(out, &ctx);
OPENSSL_cleanse(&ctx, sizeof(ctx));
return out;
}
#define DATA_ORDER_IS_BIG_ENDIAN
#define HASH_CTX SHA_CTX
#define HASH_CBLOCK 64
#define HASH_MAKE_STRING(c, s) \
do { \
uint32_t ll; \
ll = (c)->h[0]; \
HOST_l2c(ll, (s)); \
ll = (c)->h[1]; \
HOST_l2c(ll, (s)); \
ll = (c)->h[2]; \
HOST_l2c(ll, (s)); \
ll = (c)->h[3]; \
HOST_l2c(ll, (s)); \
ll = (c)->h[4]; \
HOST_l2c(ll, (s)); \
} while (0)
#define HASH_UPDATE SHA1_Update
#define HASH_TRANSFORM SHA1_Transform
#define HASH_FINAL SHA1_Final
#define HASH_BLOCK_DATA_ORDER sha1_block_data_order
#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
#define Xupdate(a, ix, ia, ib, ic, id) \
((a) = (ia ^ ib ^ ic ^ id), ix = (a) = ROTATE((a), 1))
#ifndef SHA1_ASM
static
#endif
void sha1_block_data_order(uint32_t *state, const uint8_t *data, size_t num);
#include "../digest/md32_common.h"
#define K_00_19 0x5a827999UL
#define K_20_39 0x6ed9eba1UL
#define K_40_59 0x8f1bbcdcUL
#define K_60_79 0xca62c1d6UL
/* As pointed out by Wei Dai <weidai@eskimo.com>, F() below can be simplified
* to the code in F_00_19. Wei attributes these optimisations to Peter
* Gutmann's SHS code, and he attributes it to Rich Schroeppel. #define
* F(x,y,z) (((x) & (y)) | ((~(x)) & (z))) I've just become aware of another
* tweak to be made, again from Wei Dai, in F_40_59, (x&a)|(y&a) -> (x|y)&a */
#define F_00_19(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
#define F_20_39(b, c, d) ((b) ^ (c) ^ (d))
#define F_40_59(b, c, d) (((b) & (c)) | (((b) | (c)) & (d)))
#define F_60_79(b, c, d) F_20_39(b, c, d)
#define BODY_00_15(i, a, b, c, d, e, f, xi) \
(f) = xi + (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
(b) = ROTATE((b), 30);
#define BODY_16_19(i, a, b, c, d, e, f, xi, xa, xb, xc, xd) \
Xupdate(f, xi, xa, xb, xc, xd); \
(f) += (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
(b) = ROTATE((b), 30);
#define BODY_20_31(i, a, b, c, d, e, f, xi, xa, xb, xc, xd) \
Xupdate(f, xi, xa, xb, xc, xd); \
(f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
(b) = ROTATE((b), 30);
#define BODY_32_39(i, a, b, c, d, e, f, xa, xb, xc, xd) \
Xupdate(f, xa, xa, xb, xc, xd); \
(f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
(b) = ROTATE((b), 30);
#define BODY_40_59(i, a, b, c, d, e, f, xa, xb, xc, xd) \
Xupdate(f, xa, xa, xb, xc, xd); \
(f) += (e) + K_40_59 + ROTATE((a), 5) + F_40_59((b), (c), (d)); \
(b) = ROTATE((b), 30);
#define BODY_60_79(i, a, b, c, d, e, f, xa, xb, xc, xd) \
Xupdate(f, xa, xa, xb, xc, xd); \
(f) = xa + (e) + K_60_79 + ROTATE((a), 5) + F_60_79((b), (c), (d)); \
(b) = ROTATE((b), 30);
#ifdef X
#undef X
#endif
/* Originally X was an array. As it's automatic it's natural
* to expect RISC compiler to accomodate at least part of it in
* the register bank, isn't it? Unfortunately not all compilers
* "find" this expectation reasonable:-( On order to make such
* compilers generate better code I replace X[] with a bunch of
* X0, X1, etc. See the function body below...
* <appro@fy.chalmers.se> */
#define X(i) XX##i
#if !defined(SHA1_ASM)
static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
size_t num) {
register uint32_t A, B, C, D, E, T, l;
uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10,
XX11, XX12, XX13, XX14, XX15;
A = state[0];
B = state[1];
C = state[2];
D = state[3];
E = state[4];
for (;;) {
(void)HOST_c2l(data, l);
X(0) = l;
(void)HOST_c2l(data, l);
X(1) = l;
BODY_00_15(0, A, B, C, D, E, T, X(0));
(void)HOST_c2l(data, l);
X(2) = l;
BODY_00_15(1, T, A, B, C, D, E, X(1));
(void)HOST_c2l(data, l);
X(3) = l;
BODY_00_15(2, E, T, A, B, C, D, X(2));
(void)HOST_c2l(data, l);
X(4) = l;
BODY_00_15(3, D, E, T, A, B, C, X(3));
(void)HOST_c2l(data, l);
X(5) = l;
BODY_00_15(4, C, D, E, T, A, B, X(4));
(void)HOST_c2l(data, l);
X(6) = l;
BODY_00_15(5, B, C, D, E, T, A, X(5));
(void)HOST_c2l(data, l);
X(7) = l;
BODY_00_15(6, A, B, C, D, E, T, X(6));
(void)HOST_c2l(data, l);
X(8) = l;
BODY_00_15(7, T, A, B, C, D, E, X(7));
(void)HOST_c2l(data, l);
X(9) = l;
BODY_00_15(8, E, T, A, B, C, D, X(8));
(void)HOST_c2l(data, l);
X(10) = l;
BODY_00_15(9, D, E, T, A, B, C, X(9));
(void)HOST_c2l(data, l);
X(11) = l;
BODY_00_15(10, C, D, E, T, A, B, X(10));
(void)HOST_c2l(data, l);
X(12) = l;
BODY_00_15(11, B, C, D, E, T, A, X(11));
(void)HOST_c2l(data, l);
X(13) = l;
BODY_00_15(12, A, B, C, D, E, T, X(12));
(void)HOST_c2l(data, l);
X(14) = l;
BODY_00_15(13, T, A, B, C, D, E, X(13));
(void)HOST_c2l(data, l);
X(15) = l;
BODY_00_15(14, E, T, A, B, C, D, X(14));
BODY_00_15(15, D, E, T, A, B, C, X(15));
BODY_16_19(16, C, D, E, T, A, B, X(0), X(0), X(2), X(8), X(13));
BODY_16_19(17, B, C, D, E, T, A, X(1), X(1), X(3), X(9), X(14));
BODY_16_19(18, A, B, C, D, E, T, X(2), X(2), X(4), X(10), X(15));
BODY_16_19(19, T, A, B, C, D, E, X(3), X(3), X(5), X(11), X(0));
BODY_20_31(20, E, T, A, B, C, D, X(4), X(4), X(6), X(12), X(1));
BODY_20_31(21, D, E, T, A, B, C, X(5), X(5), X(7), X(13), X(2));
BODY_20_31(22, C, D, E, T, A, B, X(6), X(6), X(8), X(14), X(3));
BODY_20_31(23, B, C, D, E, T, A, X(7), X(7), X(9), X(15), X(4));
BODY_20_31(24, A, B, C, D, E, T, X(8), X(8), X(10), X(0), X(5));
BODY_20_31(25, T, A, B, C, D, E, X(9), X(9), X(11), X(1), X(6));
BODY_20_31(26, E, T, A, B, C, D, X(10), X(10), X(12), X(2), X(7));
BODY_20_31(27, D, E, T, A, B, C, X(11), X(11), X(13), X(3), X(8));
BODY_20_31(28, C, D, E, T, A, B, X(12), X(12), X(14), X(4), X(9));
BODY_20_31(29, B, C, D, E, T, A, X(13), X(13), X(15), X(5), X(10));
BODY_20_31(30, A, B, C, D, E, T, X(14), X(14), X(0), X(6), X(11));
BODY_20_31(31, T, A, B, C, D, E, X(15), X(15), X(1), X(7), X(12));
BODY_32_39(32, E, T, A, B, C, D, X(0), X(2), X(8), X(13));
BODY_32_39(33, D, E, T, A, B, C, X(1), X(3), X(9), X(14));
BODY_32_39(34, C, D, E, T, A, B, X(2), X(4), X(10), X(15));
BODY_32_39(35, B, C, D, E, T, A, X(3), X(5), X(11), X(0));
BODY_32_39(36, A, B, C, D, E, T, X(4), X(6), X(12), X(1));
BODY_32_39(37, T, A, B, C, D, E, X(5), X(7), X(13), X(2));
BODY_32_39(38, E, T, A, B, C, D, X(6), X(8), X(14), X(3));
BODY_32_39(39, D, E, T, A, B, C, X(7), X(9), X(15), X(4));
BODY_40_59(40, C, D, E, T, A, B, X(8), X(10), X(0), X(5));
BODY_40_59(41, B, C, D, E, T, A, X(9), X(11), X(1), X(6));
BODY_40_59(42, A, B, C, D, E, T, X(10), X(12), X(2), X(7));
BODY_40_59(43, T, A, B, C, D, E, X(11), X(13), X(3), X(8));
BODY_40_59(44, E, T, A, B, C, D, X(12), X(14), X(4), X(9));
BODY_40_59(45, D, E, T, A, B, C, X(13), X(15), X(5), X(10));
BODY_40_59(46, C, D, E, T, A, B, X(14), X(0), X(6), X(11));
BODY_40_59(47, B, C, D, E, T, A, X(15), X(1), X(7), X(12));
BODY_40_59(48, A, B, C, D, E, T, X(0), X(2), X(8), X(13));
BODY_40_59(49, T, A, B, C, D, E, X(1), X(3), X(9), X(14));
BODY_40_59(50, E, T, A, B, C, D, X(2), X(4), X(10), X(15));
BODY_40_59(51, D, E, T, A, B, C, X(3), X(5), X(11), X(0));
BODY_40_59(52, C, D, E, T, A, B, X(4), X(6), X(12), X(1));
BODY_40_59(53, B, C, D, E, T, A, X(5), X(7), X(13), X(2));
BODY_40_59(54, A, B, C, D, E, T, X(6), X(8), X(14), X(3));
BODY_40_59(55, T, A, B, C, D, E, X(7), X(9), X(15), X(4));
BODY_40_59(56, E, T, A, B, C, D, X(8), X(10), X(0), X(5));
BODY_40_59(57, D, E, T, A, B, C, X(9), X(11), X(1), X(6));
BODY_40_59(58, C, D, E, T, A, B, X(10), X(12), X(2), X(7));
BODY_40_59(59, B, C, D, E, T, A, X(11), X(13), X(3), X(8));
BODY_60_79(60, A, B, C, D, E, T, X(12), X(14), X(4), X(9));
BODY_60_79(61, T, A, B, C, D, E, X(13), X(15), X(5), X(10));
BODY_60_79(62, E, T, A, B, C, D, X(14), X(0), X(6), X(11));
BODY_60_79(63, D, E, T, A, B, C, X(15), X(1), X(7), X(12));
BODY_60_79(64, C, D, E, T, A, B, X(0), X(2), X(8), X(13));
BODY_60_79(65, B, C, D, E, T, A, X(1), X(3), X(9), X(14));
BODY_60_79(66, A, B, C, D, E, T, X(2), X(4), X(10), X(15));
BODY_60_79(67, T, A, B, C, D, E, X(3), X(5), X(11), X(0));
BODY_60_79(68, E, T, A, B, C, D, X(4), X(6), X(12), X(1));
BODY_60_79(69, D, E, T, A, B, C, X(5), X(7), X(13), X(2));
BODY_60_79(70, C, D, E, T, A, B, X(6), X(8), X(14), X(3));
BODY_60_79(71, B, C, D, E, T, A, X(7), X(9), X(15), X(4));
BODY_60_79(72, A, B, C, D, E, T, X(8), X(10), X(0), X(5));
BODY_60_79(73, T, A, B, C, D, E, X(9), X(11), X(1), X(6));
BODY_60_79(74, E, T, A, B, C, D, X(10), X(12), X(2), X(7));
BODY_60_79(75, D, E, T, A, B, C, X(11), X(13), X(3), X(8));
BODY_60_79(76, C, D, E, T, A, B, X(12), X(14), X(4), X(9));
BODY_60_79(77, B, C, D, E, T, A, X(13), X(15), X(5), X(10));
BODY_60_79(78, A, B, C, D, E, T, X(14), X(0), X(6), X(11));
BODY_60_79(79, T, A, B, C, D, E, X(15), X(1), X(7), X(12));
state[0] = (state[0] + E) & 0xffffffffL;
state[1] = (state[1] + T) & 0xffffffffL;
state[2] = (state[2] + A) & 0xffffffffL;
state[3] = (state[3] + B) & 0xffffffffL;
state[4] = (state[4] + C) & 0xffffffffL;
if (--num == 0) {
break;
}
A = state[0];
B = state[1];
C = state[2];
D = state[3];
E = state[4];
}
}
#endif
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