annotate sha1.h @ 23:a6e5182eb3b6

Added tag colopi1 for changeset a55d7c2440fd
author Matt Johnston <matt@ucc.asn.au>
date Mon, 17 Jun 2013 08:32:23 +0800
parents 8705acff2494
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 /* sha1.h */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 /*
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 This file is part of the AVR-Crypto-Lib.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4 Copyright (C) 2008 Daniel Otte ([email protected])
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
6 This program is free software: you can redistribute it and/or modify
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
7 it under the terms of the GNU General Public License as published by
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 the Free Software Foundation, either version 3 of the License, or
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 (at your option) any later version.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 This program is distributed in the hope that it will be useful,
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 GNU General Public License for more details.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 You should have received a copy of the GNU General Public License
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 /**
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20 * \file sha1.h
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21 * \author Daniel Otte
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 * \email [email protected]
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23 * \date 2006-10-08
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
24 * \license GPLv3 or later
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25 * \brief SHA-1 declaration.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 * \ingroup SHA-1
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27 *
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 #ifndef SHA1_H_
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 #define SHA1_H_
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 #include <stdint.h>
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 /** \def SHA1_HASH_BITS
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
35 * definees the size of a SHA-1 hash in bits
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38 /** \def SHA1_HASH_BYTES
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39 * definees the size of a SHA-1 hash in bytes
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
42 /** \def SHA1_BLOCK_BITS
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
43 * definees the size of a SHA-1 input block in bits
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46 /** \def SHA1_BLOCK_BYTES
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
47 * definees the size of a SHA-1 input block in bytes
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
48 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 #define SHA1_HASH_BITS 160
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 #define SHA1_HASH_BYTES (SHA1_HASH_BITS/8)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 #define SHA1_BLOCK_BITS 512
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 #define SHA1_BLOCK_BYTES (SHA1_BLOCK_BITS/8)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
54 /** \typedef sha1_ctx_t
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
55 * \brief SHA-1 context type
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
56 *
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
57 * A vatiable of this type may hold the state of a SHA-1 hashing process
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
58 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
59 typedef struct {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
60 uint32_t h[5];
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
61 uint64_t length;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
62 } sha1_ctx_t;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
63
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 /** \typedef sha1_hash_t
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 * \brief hash value type
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
66 * A variable of this type may hold a SHA-1 hash value
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
67 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
68 /*
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
69 typedef uint8_t sha1_hash_t[SHA1_HASH_BITS/8];
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72 /** \fn sha1_init(sha1_ctx_t *state)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73 * \brief initializes a SHA-1 context
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74 * This function sets a ::sha1_ctx_t variable to the initialization vector
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
75 * for SHA-1 hashing.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
76 * \param state pointer to the SHA-1 context variable
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
77 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
78 void sha1_init(sha1_ctx_t *state);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
79
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
80 /** \fn sha1_nextBlock(sha1_ctx_t *state, const void* block)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
81 * \brief process one input block
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
82 * This function processes one input block and updates the hash context
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
83 * accordingly
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
84 * \param state pointer to the state variable to update
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
85 * \param block pointer to the message block to process
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
86 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
87 void sha1_nextBlock (sha1_ctx_t *state, const void* block);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
88
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
89 /** \fn sha1_lastBlock(sha1_ctx_t *state, const void* block, uint16_t length_b)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
90 * \brief processes the given block and finalizes the context
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
91 * This function processes the last block in a SHA-1 hashing process.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
92 * The block should have a maximum length of a single input block.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
93 * \param state pointer to the state variable to update and finalize
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
94 * \param block pointer to themessage block to process
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
95 * \param length_b length of the message block in bits
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
96 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
97 void sha1_lastBlock (sha1_ctx_t *state, const void* block, uint16_t length_b);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
98
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
99 /** \fn sha1_ctx2hash(sha1_hash_t *dest, sha1_ctx_t *state)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
100 * \brief convert a state variable into an actual hash value
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
101 * Writes the hash value corresponding to the state to the memory pointed by dest.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
102 * \param dest pointer to the hash value destination
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
103 * \param state pointer to the hash context
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
104 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
105 void sha1_ctx2hash (void *dest, sha1_ctx_t *state);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
106
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
107 /** \fn sha1(sha1_hash_t *dest, const void* msg, uint32_t length_b)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
108 * \brief hashing a message which in located entirely in RAM
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
109 * This function automatically hashes a message which is entirely in RAM with
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
110 * the SHA-1 hashing algorithm.
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
111 * \param dest pointer to the hash value destination
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
112 * \param msg pointer to the message which should be hashed
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
113 * \param length_b length of the message in bits
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
114 */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115 void sha1(void *dest, const void* msg, uint32_t length_b);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
116
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
117
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
118
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
119 #endif /*SHA1_H_*/