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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 * SHA-1 implementation largely based on libmincrypt in the the Android | 5 * SHA-1 implementation largely based on libmincrypt in the the Android |
| 6 * Open Source Project (platorm/system/core.git/libmincrypt/sha.c | 6 * Open Source Project (platorm/system/core.git/libmincrypt/sha.c |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 #include "cryptolib.h" | 9 #include "cryptolib.h" |
| 10 #include "utility.h" | 10 #include "utility.h" |
| 11 | 11 |
| 12 | 12 |
| 13 /* 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 |
| 14 * slower code, even if they're little-endian. | 14 * slower code, even if they're little-endian. |
| 15 */ | 15 */ |
| 16 | 16 |
| 17 #if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN) | 17 #if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN) |
| 18 | 18 |
| 19 #include <byteswap.h> | |
| 20 #include <memory.h> | |
| 21 | |
| 22 /* This version is about 28% faster than the generic version below, | 19 /* This version is about 28% faster than the generic version below, |
| 23 * but assumes little-endianness. | 20 * but assumes little-endianness. |
| 24 */ | 21 */ |
| 25 static uint32_t ror27(uint32_t val) { | 22 static uint32_t ror27(uint32_t val) { |
| 26 return (val >> 27) | (val << 5); | 23 return (val >> 27) | (val << 5); |
| 27 } | 24 } |
| 28 static uint32_t ror2(uint32_t val) { | 25 static uint32_t ror2(uint32_t val) { |
| 29 return (val >> 2) | (val << 30); | 26 return (val >> 2) | (val << 30); |
| 30 } | 27 } |
| 31 static uint32_t ror31(uint32_t val) { | 28 static uint32_t ror31(uint32_t val) { |
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| 281 int i; | 278 int i; |
| 282 SHA1_CTX ctx; | 279 SHA1_CTX ctx; |
| 283 SHA1_init(&ctx); | 280 SHA1_init(&ctx); |
| 284 SHA1_update(&ctx, data, len); | 281 SHA1_update(&ctx, data, len); |
| 285 p = SHA1_final(&ctx); | 282 p = SHA1_final(&ctx); |
| 286 for (i = 0; i < SHA1_DIGEST_SIZE; ++i) { | 283 for (i = 0; i < SHA1_DIGEST_SIZE; ++i) { |
| 287 digest[i] = *p++; | 284 digest[i] = *p++; |
| 288 } | 285 } |
| 289 return digest; | 286 return digest; |
| 290 } | 287 } |
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