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80a47a2c TK |
1 | /** |
2 | * \file sha1.h | |
3 | * | |
62d3e98d TK |
4 | * Copyright (C) 2006-2010, Brainspark B.V. |
5 | * | |
6 | * This file is part of PolarSSL (http://www.polarssl.org) | |
7 | * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> | |
80a47a2c | 8 | * |
62d3e98d | 9 | * All rights reserved. |
80a47a2c TK |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
22 | * with this program; if not, write to the Free Software Foundation, Inc., | |
23 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
24 | */ | |
25 | ||
67932e54 | 26 | /* $Cambridge: exim/src/src/pdkim/sha1.h,v 1.3 2009/12/07 13:05:07 tom Exp $ */ |
80a47a2c TK |
27 | |
28 | #ifndef POLARSSL_SHA1_H | |
29 | #define POLARSSL_SHA1_H | |
30 | ||
31 | /** | |
32 | * \brief SHA-1 context structure | |
33 | */ | |
34 | #ifndef HAVE_SHA1_CONTEXT | |
35 | #define HAVE_SHA1_CONTEXT | |
36 | typedef struct sha1_context sha1_context; | |
37 | #endif | |
38 | ||
39 | struct sha1_context | |
40 | { | |
41 | unsigned long total[2]; /*!< number of bytes processed */ | |
42 | unsigned long state[5]; /*!< intermediate digest state */ | |
43 | unsigned char buffer[64]; /*!< data block being processed */ | |
44 | ||
45 | unsigned char ipad[64]; /*!< HMAC: inner padding */ | |
46 | unsigned char opad[64]; /*!< HMAC: outer padding */ | |
47 | }; | |
48 | ||
49 | #ifdef __cplusplus | |
50 | extern "C" { | |
51 | #endif | |
52 | ||
53 | /** | |
54 | * \brief SHA-1 context setup | |
55 | * | |
56 | * \param ctx context to be initialized | |
57 | */ | |
58 | void sha1_starts( sha1_context *ctx ); | |
59 | ||
60 | /** | |
61 | * \brief SHA-1 process buffer | |
62 | * | |
63 | * \param ctx SHA-1 context | |
64 | * \param input buffer holding the data | |
65 | * \param ilen length of the input data | |
66 | */ | |
62d3e98d | 67 | void sha1_update( sha1_context *ctx, const unsigned char *input, int ilen ); |
80a47a2c TK |
68 | |
69 | /** | |
70 | * \brief SHA-1 final digest | |
71 | * | |
72 | * \param ctx SHA-1 context | |
73 | * \param output SHA-1 checksum result | |
74 | */ | |
75 | void sha1_finish( sha1_context *ctx, unsigned char output[20] ); | |
76 | ||
77 | /** | |
78 | * \brief Output = SHA-1( input buffer ) | |
79 | * | |
80 | * \param input buffer holding the data | |
81 | * \param ilen length of the input data | |
82 | * \param output SHA-1 checksum result | |
83 | */ | |
62d3e98d | 84 | void sha1( const unsigned char *input, int ilen, unsigned char output[20] ); |
80a47a2c TK |
85 | |
86 | /** | |
87 | * \brief Output = SHA-1( file contents ) | |
88 | * | |
89 | * \param path input file name | |
90 | * \param output SHA-1 checksum result | |
91 | * | |
92 | * \return 0 if successful, 1 if fopen failed, | |
93 | * or 2 if fread failed | |
94 | */ | |
62d3e98d | 95 | int sha1_file( const char *path, unsigned char output[20] ); |
80a47a2c TK |
96 | |
97 | /** | |
98 | * \brief SHA-1 HMAC context setup | |
99 | * | |
100 | * \param ctx HMAC context to be initialized | |
101 | * \param key HMAC secret key | |
102 | * \param keylen length of the HMAC key | |
103 | */ | |
62d3e98d | 104 | void sha1_hmac_starts( sha1_context *ctx, const unsigned char *key, int keylen ); |
80a47a2c TK |
105 | |
106 | /** | |
107 | * \brief SHA-1 HMAC process buffer | |
108 | * | |
109 | * \param ctx HMAC context | |
110 | * \param input buffer holding the data | |
111 | * \param ilen length of the input data | |
112 | */ | |
62d3e98d | 113 | void sha1_hmac_update( sha1_context *ctx, const unsigned char *input, int ilen ); |
80a47a2c TK |
114 | |
115 | /** | |
116 | * \brief SHA-1 HMAC final digest | |
117 | * | |
118 | * \param ctx HMAC context | |
119 | * \param output SHA-1 HMAC checksum result | |
120 | */ | |
121 | void sha1_hmac_finish( sha1_context *ctx, unsigned char output[20] ); | |
122 | ||
62d3e98d TK |
123 | /** |
124 | * \brief SHA-1 HMAC context reset | |
125 | * | |
126 | * \param ctx HMAC context to be reset | |
127 | */ | |
128 | void sha1_hmac_reset( sha1_context *ctx ); | |
129 | ||
80a47a2c TK |
130 | /** |
131 | * \brief Output = HMAC-SHA-1( hmac key, input buffer ) | |
132 | * | |
133 | * \param key HMAC secret key | |
134 | * \param keylen length of the HMAC key | |
135 | * \param input buffer holding the data | |
136 | * \param ilen length of the input data | |
137 | * \param output HMAC-SHA-1 result | |
138 | */ | |
62d3e98d TK |
139 | void sha1_hmac( const unsigned char *key, int keylen, |
140 | const unsigned char *input, int ilen, | |
80a47a2c TK |
141 | unsigned char output[20] ); |
142 | ||
143 | #ifdef __cplusplus | |
144 | } | |
145 | #endif | |
146 | ||
147 | #endif /* sha1.h */ |