120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*
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* krb.c
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* Wrapper for Kerberos5 libdes SHA1/MD5.
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*
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* Copyright (c) 2000 Marko Kreen
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* NOTES
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* It is possible that this works with other SHA1/MD5
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* implementations too.
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*
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* $Id: krb.c,v 1.1 2000/10/31 13:11:28 petere Exp $
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*/
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#include <postgres.h>
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#include "pgcrypto.h"
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#include <md5.h>
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#include <sha.h>
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#ifndef MD5_DIGEST_LENGTH
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#define MD5_DIGEST_LENGTH 16
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#endif
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#ifndef SHA1_DIGEST_LENGTH
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#ifdef SHA1_RESULTLEN
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#define SHA1_DIGEST_LENGTH SHA1_RESULTLEN
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#else
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#define SHA1_DIGEST_LENGTH 20
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#endif
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#endif
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static uint
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pg_md5_len(pg_digest *h);
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static uint8 *
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pg_md5_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
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static uint
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pg_sha1_len(pg_digest *h);
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static uint8 *
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pg_sha1_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
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static pg_digest
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int_digest_list [] = {
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{ "md5", pg_md5_len, pg_md5_digest, {0}},
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{ "sha1", pg_sha1_len, pg_sha1_digest, {0}},
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{ NULL, NULL, NULL, {0}}
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};
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static uint
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pg_md5_len(pg_digest *h) {
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return MD5_DIGEST_LENGTH;
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}
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static uint8 *
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pg_md5_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
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{
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MD5_CTX ctx;
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MD5Init(&ctx);
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MD5Update(&ctx, src, len);
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MD5Final(buf, &ctx);
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return buf;
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}
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static uint
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pg_sha1_len(pg_digest *h) {
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return SHA1_DIGEST_LENGTH;
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}
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static uint8 *
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pg_sha1_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
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{
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SHA1_CTX ctx;
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SHA1Init(&ctx);
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SHA1Update(&ctx, src, len);
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SHA1Final(buf, &ctx);
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return buf;
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}
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pg_digest *
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pg_find_digest(pg_digest *h, char *name)
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{
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pg_digest *p;
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for (p = int_digest_list; p->name; p++)
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if (!strcasecmp(p->name, name))
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return p;
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return NULL;
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}
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