85b3d7f40e061aac4871b2034896ab338dd0ea3f
3 * $Id: ghash.h,v 1.3 2000/07/02 18:27:42 mdw Exp $
5 * Generic hash function interface
7 * (c) 1999 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 1.3 2000/07/02 18:27:42 mdw
34 * (ghash->ops->done): Interface change. Passing in a null buffer pointer
35 * uses a buffer internal to the ghash object. The operation returns the
36 * address of the buffer it used. Clients of generic hashes no longer need
37 * to use dynamically allocated memory for hash results.
39 * Revision 1.2 2000/06/17 11:22:17 mdw
40 * Minor changes in the generic hash interface.
42 * Revision 1.1 1999/12/10 23:16:01 mdw
47 #ifndef CATACOMB_GHASH_H
48 #define CATACOMB_GHASH_H
54 /*----- Header files ------------------------------------------------------*/
58 /*----- Generic hash function interface -----------------------------------*/
60 typedef struct ghash
{
61 const struct ghash_ops
*ops
; /* Pointer to hash operations */
64 typedef struct ghash_ops
{
65 const struct gchash
*c
; /* Pointer to hash class */
66 void (*hash
)(ghash */
*h*/
, const void */
*p*/
, size_t /*sz*/); /* Hash */
67 octet
*(*done
)(ghash */
*h*/
, void */
*buf*/
); /* Write result */
68 void (*destroy
)(ghash */
*h*/
); /* Destroy hash block */
71 typedef struct gchash
{
72 const char *name
; /* Name of the hash function */
73 size_t hashsz
; /* Size of output hash */
74 ghash
*(*init
)(void); /* Create a new hash instance */
77 /*----- That's all, folks -------------------------------------------------*/