3 * $Id: ghash-def.h,v 1.7 2004/04/08 01:36:15 mdw Exp $
5 * Definitions for generic hash 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 #ifndef CATACOMB_GHASH_DEF_H
31 #define CATACOMB_GHASH_DEF_H
37 /*----- Header files ------------------------------------------------------*/
39 #include <mLib/bits.h>
42 #ifndef CATACOMB_ARENA_H
46 #ifndef CATACOMB_GHASH_H
50 #ifndef CATACOMB_PARANOIA_H
51 # include "paranoia.h"
54 /*----- Generic hash function interface -----------------------------------*/
56 /* --- @GHASH_DEF@ --- *
58 * Arguments: @PRE, pre@ = prefixes for hash function
60 * Use: Defines the generic hash instance.
63 #define GHASH_DEF(PRE, pre) \
65 static const ghash_ops gops; \
67 typedef struct gctx { \
70 octet buf[PRE##_HASHSZ]; \
73 static ghash *ghinit(void) \
75 gctx *g = S_CREATE(gctx); \
81 static void ghhash(ghash *h, const void *p, size_t sz) \
83 gctx *g = (gctx *)h; \
84 pre##_hash(&g->c, p, sz); \
87 static octet *ghdone(ghash *h, void *buf) \
89 gctx *g = (gctx *)h; \
92 pre##_done(&g->c, buf); \
96 static void ghdestroy(ghash *h) \
98 gctx *g = (gctx *)h; \
103 static ghash *ghcopy(ghash *h) \
105 gctx *g = (gctx *)h; \
106 gctx *gg = S_CREATE(gctx); \
107 memcpy(gg, g, sizeof(gctx)); \
111 static const ghash_ops gops = \
112 { &pre, ghhash, ghdone, ghdestroy, ghcopy }; \
113 const gchash pre = { #pre, PRE##_HASHSZ, ghinit, PRE##_BUFSZ };
115 /*----- That's all, folks -------------------------------------------------*/