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