postgresql/contrib/pgcrypto/internal-sha2.c
2010-09-20 22:08:53 +02:00

317 lines
5.8 KiB
C

/*
* internal.c
* Wrapper for builtin functions
*
* Copyright (c) 2001 Marko Kreen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* contrib/pgcrypto/internal-sha2.c
*/
#include "postgres.h"
#include <time.h>
#include "px.h"
#include "sha2.h"
void init_sha224(PX_MD *h);
void init_sha256(PX_MD *h);
void init_sha384(PX_MD *h);
void init_sha512(PX_MD *h);
/* SHA224 */
static unsigned
int_sha224_len(PX_MD *h)
{
return SHA224_DIGEST_LENGTH;
}
static unsigned
int_sha224_block_len(PX_MD *h)
{
return SHA224_BLOCK_LENGTH;
}
static void
int_sha224_update(PX_MD *h, const uint8 *data, unsigned dlen)
{
SHA224_CTX *ctx = (SHA224_CTX *) h->p.ptr;
SHA224_Update(ctx, data, dlen);
}
static void
int_sha224_reset(PX_MD *h)
{
SHA224_CTX *ctx = (SHA224_CTX *) h->p.ptr;
SHA224_Init(ctx);
}
static void
int_sha224_finish(PX_MD *h, uint8 *dst)
{
SHA224_CTX *ctx = (SHA224_CTX *) h->p.ptr;
SHA224_Final(dst, ctx);
}
static void
int_sha224_free(PX_MD *h)
{
SHA224_CTX *ctx = (SHA224_CTX *) h->p.ptr;
memset(ctx, 0, sizeof(*ctx));
px_free(ctx);
px_free(h);
}
/* SHA256 */
static unsigned
int_sha256_len(PX_MD *h)
{
return SHA256_DIGEST_LENGTH;
}
static unsigned
int_sha256_block_len(PX_MD *h)
{
return SHA256_BLOCK_LENGTH;
}
static void
int_sha256_update(PX_MD *h, const uint8 *data, unsigned dlen)
{
SHA256_CTX *ctx = (SHA256_CTX *) h->p.ptr;
SHA256_Update(ctx, data, dlen);
}
static void
int_sha256_reset(PX_MD *h)
{
SHA256_CTX *ctx = (SHA256_CTX *) h->p.ptr;
SHA256_Init(ctx);
}
static void
int_sha256_finish(PX_MD *h, uint8 *dst)
{
SHA256_CTX *ctx = (SHA256_CTX *) h->p.ptr;
SHA256_Final(dst, ctx);
}
static void
int_sha256_free(PX_MD *h)
{
SHA256_CTX *ctx = (SHA256_CTX *) h->p.ptr;
memset(ctx, 0, sizeof(*ctx));
px_free(ctx);
px_free(h);
}
/* SHA384 */
static unsigned
int_sha384_len(PX_MD *h)
{
return SHA384_DIGEST_LENGTH;
}
static unsigned
int_sha384_block_len(PX_MD *h)
{
return SHA384_BLOCK_LENGTH;
}
static void
int_sha384_update(PX_MD *h, const uint8 *data, unsigned dlen)
{
SHA384_CTX *ctx = (SHA384_CTX *) h->p.ptr;
SHA384_Update(ctx, data, dlen);
}
static void
int_sha384_reset(PX_MD *h)
{
SHA384_CTX *ctx = (SHA384_CTX *) h->p.ptr;
SHA384_Init(ctx);
}
static void
int_sha384_finish(PX_MD *h, uint8 *dst)
{
SHA384_CTX *ctx = (SHA384_CTX *) h->p.ptr;
SHA384_Final(dst, ctx);
}
static void
int_sha384_free(PX_MD *h)
{
SHA384_CTX *ctx = (SHA384_CTX *) h->p.ptr;
memset(ctx, 0, sizeof(*ctx));
px_free(ctx);
px_free(h);
}
/* SHA512 */
static unsigned
int_sha512_len(PX_MD *h)
{
return SHA512_DIGEST_LENGTH;
}
static unsigned
int_sha512_block_len(PX_MD *h)
{
return SHA512_BLOCK_LENGTH;
}
static void
int_sha512_update(PX_MD *h, const uint8 *data, unsigned dlen)
{
SHA512_CTX *ctx = (SHA512_CTX *) h->p.ptr;
SHA512_Update(ctx, data, dlen);
}
static void
int_sha512_reset(PX_MD *h)
{
SHA512_CTX *ctx = (SHA512_CTX *) h->p.ptr;
SHA512_Init(ctx);
}
static void
int_sha512_finish(PX_MD *h, uint8 *dst)
{
SHA512_CTX *ctx = (SHA512_CTX *) h->p.ptr;
SHA512_Final(dst, ctx);
}
static void
int_sha512_free(PX_MD *h)
{
SHA512_CTX *ctx = (SHA512_CTX *) h->p.ptr;
memset(ctx, 0, sizeof(*ctx));
px_free(ctx);
px_free(h);
}
/* init functions */
void
init_sha224(PX_MD *md)
{
SHA224_CTX *ctx;
ctx = px_alloc(sizeof(*ctx));
memset(ctx, 0, sizeof(*ctx));
md->p.ptr = ctx;
md->result_size = int_sha224_len;
md->block_size = int_sha224_block_len;
md->reset = int_sha224_reset;
md->update = int_sha224_update;
md->finish = int_sha224_finish;
md->free = int_sha224_free;
md->reset(md);
}
void
init_sha256(PX_MD *md)
{
SHA256_CTX *ctx;
ctx = px_alloc(sizeof(*ctx));
memset(ctx, 0, sizeof(*ctx));
md->p.ptr = ctx;
md->result_size = int_sha256_len;
md->block_size = int_sha256_block_len;
md->reset = int_sha256_reset;
md->update = int_sha256_update;
md->finish = int_sha256_finish;
md->free = int_sha256_free;
md->reset(md);
}
void
init_sha384(PX_MD *md)
{
SHA384_CTX *ctx;
ctx = px_alloc(sizeof(*ctx));
memset(ctx, 0, sizeof(*ctx));
md->p.ptr = ctx;
md->result_size = int_sha384_len;
md->block_size = int_sha384_block_len;
md->reset = int_sha384_reset;
md->update = int_sha384_update;
md->finish = int_sha384_finish;
md->free = int_sha384_free;
md->reset(md);
}
void
init_sha512(PX_MD *md)
{
SHA512_CTX *ctx;
ctx = px_alloc(sizeof(*ctx));
memset(ctx, 0, sizeof(*ctx));
md->p.ptr = ctx;
md->result_size = int_sha512_len;
md->block_size = int_sha512_block_len;
md->reset = int_sha512_reset;
md->update = int_sha512_update;
md->finish = int_sha512_finish;
md->free = int_sha512_free;
md->reset(md);
}