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Side by Side Diff: src/platform/vboot_reference/crypto/sha1.c

Issue 1574005: VBoot Reference: Refactor Part 2 - Crypto Libraries (Closed)
Patch Set: . Created 10 years, 8 months ago
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1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be 2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file. 3 * found in the LICENSE file.
4 */ 4 *
5 5 * SHA-1 implementation largely based on libmincrypt in the the Android
6 /* SHA-1 implementation largely based on libmincrypt in the the Android
7 * Open Source Project (platorm/system/core.git/libmincrypt/sha.c 6 * Open Source Project (platorm/system/core.git/libmincrypt/sha.c
8 */ 7 */
9 8
10 #include "sha.h" 9 #include "cryptolib.h"
10 #include "utility.h"
11
11 12
12 /* Some machines lack byteswap.h and endian.h. These have to use the 13 /* Some machines lack byteswap.h and endian.h. These have to use the
13 * slower code, even if they're little-endian. 14 * slower code, even if they're little-endian.
14 */ 15 */
15 16
16 #if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN) 17 #if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN)
17 18
18 #include <byteswap.h> 19 #include <byteswap.h>
19 #include <memory.h> 20 #include <memory.h>
20 21
(...skipping 106 matching lines...) Expand 10 before | Expand all | Expand 10 after
127 ctx->state[4] += E; 128 ctx->state[4] += E;
128 } 129 }
129 130
130 void SHA1_update(SHA1_CTX* ctx, const uint8_t* data, uint64_t len) { 131 void SHA1_update(SHA1_CTX* ctx, const uint8_t* data, uint64_t len) {
131 int i = ctx->count % sizeof(ctx->buf); 132 int i = ctx->count % sizeof(ctx->buf);
132 const uint8_t* p = (const uint8_t*)data; 133 const uint8_t* p = (const uint8_t*)data;
133 134
134 ctx->count += len; 135 ctx->count += len;
135 136
136 while (len > sizeof(ctx->buf) - i) { 137 while (len > sizeof(ctx->buf) - i) {
137 memcpy(&ctx->buf.b[i], p, sizeof(ctx->buf) - i); 138 Memcpy(&ctx->buf.b[i], p, sizeof(ctx->buf) - i);
138 len -= sizeof(ctx->buf) - i; 139 len -= sizeof(ctx->buf) - i;
139 p += sizeof(ctx->buf) - i; 140 p += sizeof(ctx->buf) - i;
140 SHA1_Transform(ctx); 141 SHA1_Transform(ctx);
141 i = 0; 142 i = 0;
142 } 143 }
143 144
144 while (len--) { 145 while (len--) {
145 ctx->buf.b[i++] = *p++; 146 ctx->buf.b[i++] = *p++;
146 if (i == sizeof(ctx->buf)) { 147 if (i == sizeof(ctx->buf)) {
147 SHA1_Transform(ctx); 148 SHA1_Transform(ctx);
(...skipping 132 matching lines...) Expand 10 before | Expand all | Expand 10 after
280 int i; 281 int i;
281 SHA1_CTX ctx; 282 SHA1_CTX ctx;
282 SHA1_init(&ctx); 283 SHA1_init(&ctx);
283 SHA1_update(&ctx, data, len); 284 SHA1_update(&ctx, data, len);
284 p = SHA1_final(&ctx); 285 p = SHA1_final(&ctx);
285 for (i = 0; i < SHA1_DIGEST_SIZE; ++i) { 286 for (i = 0; i < SHA1_DIGEST_SIZE; ++i) {
286 digest[i] = *p++; 287 digest[i] = *p++;
287 } 288 }
288 return digest; 289 return digest;
289 } 290 }
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