4 * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
6 * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * * Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * * Neither the names of PolarSSL or XySSL nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #ifndef POLARSSL_SHA1_H
36 #define POLARSSL_SHA1_H
39 * \brief SHA-1 context structure
43 unsigned long total
[2]; /*!< number of bytes processed */
44 unsigned long state
[5]; /*!< intermediate digest state */
45 unsigned char buffer
[64]; /*!< data block being processed */
47 unsigned char ipad
[64]; /*!< HMAC: inner padding */
48 unsigned char opad
[64]; /*!< HMAC: outer padding */
57 * \brief SHA-1 context setup
59 * \param ctx context to be initialized
61 void sha1_starts( sha1_context
*ctx
);
64 * \brief SHA-1 process buffer
66 * \param ctx SHA-1 context
67 * \param input buffer holding the data
68 * \param ilen length of the input data
70 void sha1_update( sha1_context
*ctx
, unsigned char *input
, int ilen
);
73 * \brief SHA-1 final digest
75 * \param ctx SHA-1 context
76 * \param output SHA-1 checksum result
78 void sha1_finish( sha1_context
*ctx
, unsigned char output
[20] );
81 * \brief Output = SHA-1( input buffer )
83 * \param input buffer holding the data
84 * \param ilen length of the input data
85 * \param output SHA-1 checksum result
87 void sha1( unsigned char *input
, int ilen
, unsigned char output
[20] );
90 * \brief Output = SHA-1( file contents )
92 * \param path input file name
93 * \param output SHA-1 checksum result
95 * \return 0 if successful, 1 if fopen failed,
96 * or 2 if fread failed
98 int sha1_file( char *path
, unsigned char output
[20] );
101 * \brief SHA-1 HMAC context setup
103 * \param ctx HMAC context to be initialized
104 * \param key HMAC secret key
105 * \param keylen length of the HMAC key
107 void sha1_hmac_starts( sha1_context
*ctx
, unsigned char *key
, int keylen
);
110 * \brief SHA-1 HMAC process buffer
112 * \param ctx HMAC context
113 * \param input buffer holding the data
114 * \param ilen length of the input data
116 void sha1_hmac_update( sha1_context
*ctx
, unsigned char *input
, int ilen
);
119 * \brief SHA-1 HMAC final digest
121 * \param ctx HMAC context
122 * \param output SHA-1 HMAC checksum result
124 void sha1_hmac_finish( sha1_context
*ctx
, unsigned char output
[20] );
127 * \brief Output = HMAC-SHA-1( hmac key, input buffer )
129 * \param key HMAC secret key
130 * \param keylen length of the HMAC key
131 * \param input buffer holding the data
132 * \param ilen length of the input data
133 * \param output HMAC-SHA-1 result
135 void sha1_hmac( unsigned char *key
, int keylen
,
136 unsigned char *input
, int ilen
,
137 unsigned char output
[20] );
140 * \brief Checkup routine
142 * \return 0 if successful, or 1 if the test failed
144 int sha1_self_test( int verbose
);
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