xref: /openbsd-src/bin/md5/crc.h (revision ce7279d89b71439c96c854f612f4ac93a461fdc4)
1 /*	$OpenBSD: crc.h,v 1.5 2024/05/21 05:00:47 jsg Exp $	*/
2 
3 /*
4  * Copyright (c) 2004 Todd C. Miller <millert@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #define	CKSUM_DIGEST_LENGTH		4
20 #define	CKSUM_DIGEST_STRING_LENGTH	(10 + 1 + 20 + 1)
21 
22 typedef struct CKSUMContext {
23 	u_int32_t crc;
24 	off_t len;
25 } CKSUM_CTX;
26 
27 void	 CKSUM_Init(CKSUM_CTX *);
28 void	 CKSUM_Update(CKSUM_CTX *, const u_int8_t *, size_t);
29 void	 CKSUM_Final(CKSUM_CTX *);
30 char    *CKSUM_End(CKSUM_CTX *, char *);
31