86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
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* openssl.c
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* Wrapper for OpenSSL library.
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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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* $Id: openssl.c,v 1.2 2001/02/10 02:31:26 tgl Exp $
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*/
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#include "postgres.h"
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#include "pgcrypto.h"
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#include <evp.h>
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static uint
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pg_ossl_len(pg_digest *h);
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static uint8 *
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pg_ossl_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf);
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static uint
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pg_ossl_len(pg_digest *h) {
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return EVP_MD_size((EVP_MD*)h->misc.ptr);
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}
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static uint8 *
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pg_ossl_digest(pg_digest *h, uint8 *src, uint len, uint8 *buf)
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{
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EVP_MD *md = (EVP_MD*)h->misc.ptr;
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EVP_MD_CTX ctx;
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EVP_DigestInit(&ctx, md);
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EVP_DigestUpdate(&ctx, src, len);
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EVP_DigestFinal(&ctx, buf, NULL);
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return buf;
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}
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static int pg_openssl_initialized = 0;
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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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const EVP_MD *md;
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if (!pg_openssl_initialized) {
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OpenSSL_add_all_digests();
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pg_openssl_initialized = 1;
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}
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md = EVP_get_digestbyname(name);
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if (md == NULL)
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return NULL;
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h->name = name;
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h->length = pg_ossl_len;
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h->digest = pg_ossl_digest;
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h->misc.ptr = (void*)md;
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return h;
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}
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