3 * $Id: crc32.c,v 1.2 2004/03/21 23:52:58 mdw Exp $
5 * Generic hash wrapper for CRC32
7 * (c) 2001 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 1.2 2004/03/21 23:52:58 mdw
34 * Ooops, how did that slip by? Fix return type of @ghcopy@.
36 * Revision 1.1 2001/04/19 18:26:32 mdw
37 * Add CRC as another hash function.
41 /*----- Header files ------------------------------------------------------*/
43 #include <mLib/crc32.h>
51 /*----- Main code ---------------------------------------------------------*/
59 static const ghash_ops gops
;
61 static ghash
*ghinit(void)
63 gctx
*g
= S_CREATE(gctx
);
69 static void ghhash(ghash
*h
, const void *p
, size_t sz
)
72 CRC32(g
->c
, g
->c
, p
, sz
);
75 static octet
*ghdone(ghash
*h
, void *buf
)
84 static void ghdestroy(ghash
*h
)
91 static ghash
*ghcopy(ghash
*h
)
94 gctx
*gg
= S_CREATE(gctx
);
95 memcpy(gg
, g
, sizeof(gctx
));
99 static const ghash_ops gops
= { &gcrc32
, ghhash
, ghdone
, ghdestroy
, ghcopy
};
100 const gchash gcrc32
= { "crc32", 4, ghinit
};
102 /*----- That's all, folks -------------------------------------------------*/