f60fdc9b917a540121b28b5e09e95afb2d9c51a6
3 * $Id: has160.h,v 1.1 2004/04/04 19:42:59 mdw Exp $
5 * The HAS160 message digest function
7 * (c) 2004 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
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.
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.
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,
30 /*----- Revision history --------------------------------------------------*
33 * Revision 1.1 2004/04/04 19:42:59 mdw
38 /*----- Notes on the HAS160 hash function ---------------------------------*
40 * HAS160 was designed by Chae Hoon Lim and the Korean Information Security
41 * Agency (KISA). It's recommended for use with KCDSA (though I think I'm
42 * happer with RIPEMD-160 or SHA1). It's here so I can check KCDSA test
46 #ifndef CATACOMB_HAS160_H
47 #define CATACOMB_HAS160_H
53 /*----- Header files ------------------------------------------------------*/
55 #include <mLib/bits.h>
57 #ifndef CATACOMB_GHASH_H
61 /*----- Magic numbers -----------------------------------------------------*/
63 #define HAS160_BUFSZ 64
64 #define HAS160_HASHSZ 20
65 #define HAS160_STATESZ 20
67 /*----- Data structures ---------------------------------------------------*/
69 typedef struct has160_ctx
{
70 uint32 a
, b
, c
, d
, e
; /* Chaining variables */
71 uint32 nl
, nh
; /* Byte count so far */
72 unsigned off
; /* Offset into buffer */
73 octet buf
[HAS160_BUFSZ
]; /* Accumulation buffer */
76 /*----- Functions provided ------------------------------------------------*/
78 /* --- @has160_compress@ --- *
80 * Arguments: @has160_ctx *ctx@ = pointer to context block
81 * @const void *sbuf@ = pointer to buffer of appropriate size
85 * Use: HAS160 compression function.
88 extern void has160_compress(has160_ctx */
*ctx*/
, const void */
*sbuf*/
);
90 /* --- @has160_init@ --- *
92 * Arguments: @has160_ctx *ctx@ = pointer to context block to initialize
96 * Use: Initializes a context block ready for hashing.
99 extern void has160_init(has160_ctx */
*ctx*/
);
101 /* --- @has160_set@ --- *
103 * Arguments: @has160_ctx *ctx@ = pointer to context block
104 * @const void *buf@ = pointer to state buffer
105 * @unsigned long count@ = current count of bytes processed
109 * Use: Initializes a context block from a given state. This is
110 * useful in cases where the initial hash state is meant to be
111 * secret, e.g., for NMAC and HMAC support.
114 extern void has160_set(has160_ctx */
*ctx*/
, const void */
*buf*/
,
115 unsigned long /*count*/);
117 /* --- @has160_hash@ --- *
119 * Arguments: @has160_ctx *ctx@ = pointer to context block
120 * @const void *buf@ = buffer of data to hash
121 * @size_t sz@ = size of buffer to hash
125 * Use: Hashes a buffer of data. The buffer may be of any size and
129 extern void has160_hash(has160_ctx */
*ctx*/
,
130 const void */
*buf*/
, size_t /*sz*/);
132 /* --- @has160_done@ --- *
134 * Arguments: @has160_ctx *ctx@ = pointer to context block
135 * @void *hash@ = pointer to output buffer
139 * Use: Returns the hash of the data read so far.
142 extern void has160_done(has160_ctx */
*ctx*/
, void */
*hash*/
);
144 /* --- @has160_state@ --- *
146 * Arguments: @has160_ctx *ctx@ = pointer to context
147 * @void *state@ = pointer to buffer for current state
149 * Returns: Number of bytes written to the hash function so far.
151 * Use: Returns the current state of the hash function such that
152 * it can be passed to @has160_set@.
155 extern unsigned long has160_state(has160_ctx */
*ctx*/
, void */
*state*/
);
157 /*----- Generic hash interface --------------------------------------------*/
159 extern const gchash has160
;
161 /*----- That's all, folks -------------------------------------------------*/