32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/* $OpenBSD: crc.h,v 1.4 2019/01/25 00:19:25 millert Exp $ */
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/*
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* Copyright (c) 2004 Todd C. Miller <millert@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define CKSUM_DIGEST_LENGTH 4
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#define CKSUM_DIGEST_STRING_LENGTH (10 + 1 + 20 + 1)
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typedef struct CKSUMContext {
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u_int32_t crc;
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off_t len;
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} CKSUM_CTX;
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void CKSUM_Init(CKSUM_CTX *);
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void CKSUM_Update(CKSUM_CTX *, const u_int8_t *, size_t);
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void CKSUM_Final(CKSUM_CTX *);
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char *CKSUM_End(CKSUM_CTX *, char *);
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char *CKSUM_Data(const u_int8_t *, size_t, char *);
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