/*      $OpenBSD: crc.h,v 1.5 2024/05/21 05:00:47 jsg Exp $     */

/*
 * Copyright (c) 2004 Todd C. Miller <millert@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define CKSUM_DIGEST_LENGTH             4
#define CKSUM_DIGEST_STRING_LENGTH      (10 + 1 + 20 + 1)

typedef struct CKSUMContext {
        u_int32_t crc;
        off_t len;
} CKSUM_CTX;

void     CKSUM_Init(CKSUM_CTX *);
void     CKSUM_Update(CKSUM_CTX *, const u_int8_t *, size_t);
void     CKSUM_Final(CKSUM_CTX *);
char    *CKSUM_End(CKSUM_CTX *, char *);