OLD | NEW |
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 |
6 /* SHA-1, 256 and 512 functions. */ | 6 /* SHA-1, 256 and 512 functions. */ |
7 | 7 |
8 #ifndef VBOOT_REFERENCE_SHA_H_ | 8 #ifndef VBOOT_REFERENCE_SHA_H_ |
9 #define VBOOT_REFERENCE_SHA_H_ | 9 #define VBOOT_REFERENCE_SHA_H_ |
10 | 10 |
11 #ifndef VBOOT_REFERENCE_CRYPTOLIB_H_ | 11 #include <inttypes.h> |
12 #error "Do not include this file directly. Use cryptolib.h instead." | 12 #include <string.h> |
13 #endif | |
14 | |
15 #include <stdint.h> | |
16 | 13 |
17 #define SHA1_DIGEST_SIZE 20 | 14 #define SHA1_DIGEST_SIZE 20 |
18 #define SHA1_BLOCK_SIZE 64 | 15 #define SHA1_BLOCK_SIZE 64 |
19 | 16 |
20 #define SHA256_DIGEST_SIZE 32 | 17 #define SHA256_DIGEST_SIZE 32 |
21 #define SHA256_BLOCK_SIZE 64 | 18 #define SHA256_BLOCK_SIZE 64 |
22 | 19 |
23 #define SHA512_DIGEST_SIZE 64 | 20 #define SHA512_DIGEST_SIZE 64 |
24 #define SHA512_BLOCK_SIZE 128 | 21 #define SHA512_BLOCK_SIZE 128 |
25 | 22 |
(...skipping 51 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
77 */ | 74 */ |
78 uint8_t* SHA256(const uint8_t* data, uint64_t len, uint8_t* digest); | 75 uint8_t* SHA256(const uint8_t* data, uint64_t len, uint8_t* digest); |
79 | 76 |
80 /* Convenience function for SHA-512. Computes hash on [data] of length [len]. | 77 /* Convenience function for SHA-512. Computes hash on [data] of length [len]. |
81 * and stores it into [digest]. [digest] should be pre-allocated to | 78 * and stores it into [digest]. [digest] should be pre-allocated to |
82 * SHA512_DIGEST_SIZE bytes. | 79 * SHA512_DIGEST_SIZE bytes. |
83 */ | 80 */ |
84 uint8_t* SHA512(const uint8_t* data, uint64_t len, uint8_t* digest); | 81 uint8_t* SHA512(const uint8_t* data, uint64_t len, uint8_t* digest); |
85 | 82 |
86 | 83 |
87 /*---- Utility functions/wrappers for message digests. */ | |
88 | |
89 #define SHA1_DIGEST_ALGORITHM 0 | |
90 #define SHA256_DIGEST_ALGORITHM 1 | |
91 #define SHA512_DIGEST_ALGORITHM 2 | |
92 | |
93 /* A generic digest context structure which can be used to represent | |
94 * the SHA*_CTX for multiple digest algorithms. | |
95 */ | |
96 typedef struct DigestContext { | |
97 SHA1_CTX* sha1_ctx; | |
98 SHA256_CTX* sha256_ctx; | |
99 SHA512_CTX* sha512_ctx; | |
100 int algorithm; /* Hashing algorithm to use. */ | |
101 } DigestContext; | |
102 | |
103 /* Wrappers for message digest algorithms. These are useful when the hashing | |
104 * operation is being done in parallel with something else. DigestContext tracks | |
105 * and stores the state of any digest algorithm (one at any given time). | |
106 */ | |
107 | |
108 /* Initialize a digest context for use with signature algorithm [algorithm]. */ | |
109 void DigestInit(DigestContext* ctx, int sig_algorithm); | |
110 void DigestUpdate(DigestContext* ctx, const uint8_t* data, uint64_t len); | |
111 | |
112 /* Caller owns the returned digest and must free it. */ | |
113 uint8_t* DigestFinal(DigestContext* ctx); | |
114 | |
115 /* Returns the appropriate digest for the data in [input_file] | |
116 * based on the signature [algorithm]. | |
117 * Caller owns the returned digest and must free it. | |
118 */ | |
119 uint8_t* DigestFile(char* input_file, int sig_algorithm); | |
120 | |
121 /* Returns the appropriate digest of [buf] of length | |
122 * [len] based on the signature [algorithm]. | |
123 * Caller owns the returned digest and must free it. | |
124 */ | |
125 uint8_t* DigestBuf(const uint8_t* buf, uint64_t len, int sig_algorithm); | |
126 | |
127 | |
128 #endif /* VBOOT_REFERENCE_SHA_H_ */ | 84 #endif /* VBOOT_REFERENCE_SHA_H_ */ |
OLD | NEW |