netwerk/srtp/src/crypto/include/sha1.h@6474c204b198
netwerk/srtp/src/crypto/include/sha1.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * sha1.h
3 *
4 * interface to the Secure Hash Algorithm v.1 (SHA-1), specified in
5 * FIPS 180-1
6 *
7 * David A. McGrew
8 * Cisco Systems, Inc.
9 */
11 /*
12 *
13 * Copyright (c) 2001-2006, Cisco Systems, Inc.
14 * All rights reserved.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 *
20 * Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 *
23 * Redistributions in binary form must reproduce the above
24 * copyright notice, this list of conditions and the following
25 * disclaimer in the documentation and/or other materials provided
26 * with the distribution.
27 *
28 * Neither the name of the Cisco Systems, Inc. nor the names of its
29 * contributors may be used to endorse or promote products derived
30 * from this software without specific prior written permission.
31 *
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
35 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
36 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43 * OF THE POSSIBILITY OF SUCH DAMAGE.
44 *
45 */
47 #ifndef SHA1_H
48 #define SHA1_H
50 #include "err.h"
51 #include "datatypes.h"
53 typedef struct {
54 uint32_t H[5]; /* state vector */
55 uint32_t M[16]; /* message buffer */
56 int octets_in_buffer; /* octets of message in buffer */
57 uint32_t num_bits_in_msg; /* total number of bits in message */
58 } sha1_ctx_t;
60 /*
61 * sha1(&ctx, msg, len, output) hashes the len octets starting at msg
62 * into the SHA1 context, then writes the result to the 20 octets at
63 * output
64 *
65 */
67 void
68 sha1(const uint8_t *message, int octets_in_msg, uint32_t output[5]);
70 /*
71 * sha1_init(&ctx) initializes the SHA1 context ctx
72 *
73 * sha1_update(&ctx, msg, len) hashes the len octets starting at msg
74 * into the SHA1 context
75 *
76 * sha1_final(&ctx, output) performs the final processing of the SHA1
77 * context and writes the result to the 20 octets at output
78 *
79 */
81 void
82 sha1_init(sha1_ctx_t *ctx);
84 void
85 sha1_update(sha1_ctx_t *ctx, const uint8_t *M, int octets_in_msg);
87 void
88 sha1_final(sha1_ctx_t *ctx, uint32_t output[5]);
90 /*
91 * The sha1_core function is INTERNAL to SHA-1, but it is declared
92 * here because it is also used by the cipher SEAL 3.0 in its key
93 * setup algorithm.
94 */
96 /*
97 * sha1_core(M, H) computes the core sha1 compression function, where M is
98 * the next part of the message and H is the intermediate state {H0,
99 * H1, ...}
100 *
101 * this function does not do any of the padding required in the
102 * complete sha1 function
103 */
105 void
106 sha1_core(const uint32_t M[16], uint32_t hash_value[5]);
108 #endif /* SHA1_H */
