1c64c8e2 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: rmd320.h,v 1.1 2000/07/09 21:30:31 mdw Exp $ |
4 | * |
5 | * The RIPEMD-320 message digest function |
6 | * |
7 | * (c) 1998 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
14 | * Catacomb is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * Catacomb is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with Catacomb; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: rmd320.h,v $ |
33 | * Revision 1.1 2000/07/09 21:30:31 mdw |
34 | * New RIPEMD variants. |
35 | * |
36 | */ |
37 | |
38 | /*----- Notes on the RIPEMD-320 hash function -----------------------------* |
39 | * |
40 | * RIPEMD-320 was invented by Hans Dobbertin, Antoon Bosselaers and Bart |
41 | * Preneel. It's a double-width version of RIPEMD-160, constructed simply by |
42 | * not gluing together the two parallel computations which RIPEMD-160 usually |
43 | * does in its compression function. The authors warn that, while its output |
44 | * is twice as wide as that of RIPEMD-160, they don't expect it to offer any |
45 | * more security. |
46 | */ |
47 | |
48 | #ifndef CATACOMB_RMD320_H |
49 | #define CATACOMB_RMD320_H |
50 | |
51 | #ifdef __cplusplus |
52 | extern "C" { |
53 | #endif |
54 | |
55 | /*----- Header files ------------------------------------------------------*/ |
56 | |
57 | #include <mLib/bits.h> |
58 | |
59 | #ifndef CATACOMB_GHASH_H |
60 | # include "ghash.h" |
61 | #endif |
62 | |
63 | /*----- Magic numbers -----------------------------------------------------*/ |
64 | |
65 | #define RMD320_BUFSZ 64 |
66 | #define RMD320_HASHSZ 40 |
67 | |
68 | /*----- Data structures ---------------------------------------------------*/ |
69 | |
70 | typedef struct rmd320_ctx { |
71 | uint32 a, b, c, d, e; /* Chaining variables */ |
72 | uint32 A, B, C, D, E; /* More chaining variables */ |
73 | uint32 nl, nh; /* Byte count so far */ |
74 | unsigned off; /* Offset into buffer */ |
75 | octet buf[RMD320_BUFSZ]; /* Accumulation buffer */ |
76 | } rmd320_ctx; |
77 | |
78 | /*----- Functions provided ------------------------------------------------*/ |
79 | |
80 | /* --- @rmd320_compress@ --- * |
81 | * |
82 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
83 | * @const void *sbuf@ = pointer to buffer of appropriate size |
84 | * |
85 | * Returns: --- |
86 | * |
87 | * Use: RIPEMD-320 compression function. |
88 | */ |
89 | |
90 | extern void rmd320_compress(rmd320_ctx */*ctx*/, const void */*sbuf*/); |
91 | |
92 | /* --- @rmd320_init@ --- * |
93 | * |
94 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block to initialize |
95 | * |
96 | * Returns: --- |
97 | * |
98 | * Use: Initializes a context block ready for hashing. |
99 | */ |
100 | |
101 | extern void rmd320_init(rmd320_ctx */*ctx*/); |
102 | |
103 | /* --- @rmd320_set@ --- * |
104 | * |
105 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
106 | * @const void *buf@ = pointer to state buffer |
107 | * @unsigned long count@ = current count of bytes processed |
108 | * |
109 | * Returns: --- |
110 | * |
111 | * Use: Initializes a context block from a given state. This is |
112 | * useful in cases where the initial hash state is meant to be |
113 | * secret, e.g., for NMAC and HMAC support. |
114 | */ |
115 | |
116 | extern void rmd320_set(rmd320_ctx */*ctx*/, |
117 | const void */*buf*/, unsigned long /*count*/); |
118 | |
119 | /* --- @rmd320_hash@ --- * |
120 | * |
121 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
122 | * @const void *buf@ = buffer of data to hash |
123 | * @size_t sz@ = size of buffer to hash |
124 | * |
125 | * Returns: --- |
126 | * |
127 | * Use: Hashes a buffer of data. The buffer may be of any size and |
128 | * alignment. |
129 | */ |
130 | |
131 | extern void rmd320_hash(rmd320_ctx */*ctx*/, |
132 | const void */*buf*/, size_t /*sz*/); |
133 | |
134 | /* --- @rmd320_done@ --- * |
135 | * |
136 | * Arguments: @rmd320_ctx *ctx@ = pointer to context block |
137 | * @void *hash@ = pointer to output buffer |
138 | * |
139 | * Returns: --- |
140 | * |
141 | * Use: Returns the hash of the data read so far. |
142 | */ |
143 | |
144 | extern void rmd320_done(rmd320_ctx */*ctx*/, void */*hash*/); |
145 | |
146 | /* --- @rmd320_state@ --- * |
147 | * |
148 | * Arguments: @rmd320_ctx *ctx@ = pointer to context |
149 | * @void *state@ = pointer to buffer for current state |
150 | * |
151 | * Returns: Number of bytes written to the hash function so far. |
152 | * |
153 | * Use: Returns the current state of the hash function such that |
154 | * it can be passed to @rmd320_set@. |
155 | */ |
156 | |
157 | extern unsigned long rmd320_state(rmd320_ctx */*ctx*/, void */*state*/); |
158 | |
159 | /*----- Generic hash interface --------------------------------------------*/ |
160 | |
161 | extern const gchash rmd320; |
162 | |
163 | /*----- That's all, folks -------------------------------------------------*/ |
164 | |
165 | #ifdef __cplusplus |
166 | } |
167 | #endif |
168 | |
169 | #endif |