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/*-------------------------------------------------------------------------
*
* sha2.h
* Generic headers for SHA224, 256, 384 AND 512 functions of PostgreSQL.
*
* Portions Copyright (c) 2016-2018, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/include/common/sha2.h
*
*-------------------------------------------------------------------------
*/
/* $OpenBSD: sha2.h,v 1.2 2004/04/28 23:11:57 millert Exp $ */
/*
* FILE: sha2.h
* AUTHOR: Aaron D. Gifford <me@aarongifford.com>
*
* Copyright (c) 2000-2001, Aaron D. Gifford
* 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.
* 3. Neither the name of the copyright holder nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``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 CONTRIBUTOR(S) 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.
*
* $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
*/
#ifndef _PG_SHA2_H_
#define _PG_SHA2_H_
#ifdef USE_SSL
#include <openssl/sha.h>
#endif
/*** SHA224/256/384/512 Various Length Definitions ***********************/
#define PG_SHA224_BLOCK_LENGTH 64
#define PG_SHA224_DIGEST_LENGTH 28
#define PG_SHA224_DIGEST_STRING_LENGTH (PG_SHA224_DIGEST_LENGTH * 2 + 1)
#define PG_SHA256_BLOCK_LENGTH 64
#define PG_SHA256_DIGEST_LENGTH 32
#define PG_SHA256_DIGEST_STRING_LENGTH (PG_SHA256_DIGEST_LENGTH * 2 + 1)
#define PG_SHA384_BLOCK_LENGTH 128
#define PG_SHA384_DIGEST_LENGTH 48
#define PG_SHA384_DIGEST_STRING_LENGTH (PG_SHA384_DIGEST_LENGTH * 2 + 1)
#define PG_SHA512_BLOCK_LENGTH 128
#define PG_SHA512_DIGEST_LENGTH 64
#define PG_SHA512_DIGEST_STRING_LENGTH (PG_SHA512_DIGEST_LENGTH * 2 + 1)
/* Context Structures for SHA-1/224/256/384/512 */
#ifdef USE_SSL
typedef SHA256_CTX pg_sha256_ctx;
typedef SHA512_CTX pg_sha512_ctx;
typedef SHA256_CTX pg_sha224_ctx;
typedef SHA512_CTX pg_sha384_ctx;
#else
typedef struct pg_sha256_ctx
{
uint32 state[8];
uint64 bitcount;
uint8 buffer[PG_SHA256_BLOCK_LENGTH];
} pg_sha256_ctx;
typedef struct pg_sha512_ctx
{
uint64 state[8];
uint64 bitcount[2];
uint8 buffer[PG_SHA512_BLOCK_LENGTH];
} pg_sha512_ctx;
typedef struct pg_sha256_ctx pg_sha224_ctx;
typedef struct pg_sha512_ctx pg_sha384_ctx;
#endif /* USE_SSL */
/* Interface routines for SHA224/256/384/512 */
extern void pg_sha224_init(pg_sha224_ctx *ctx);
extern void pg_sha224_update(pg_sha224_ctx *ctx, const uint8 *input0,
size_t len);
extern void pg_sha224_final(pg_sha224_ctx *ctx, uint8 *dest);
extern void pg_sha256_init(pg_sha256_ctx *ctx);
extern void pg_sha256_update(pg_sha256_ctx *ctx, const uint8 *input0,
size_t len);
extern void pg_sha256_final(pg_sha256_ctx *ctx, uint8 *dest);
extern void pg_sha384_init(pg_sha384_ctx *ctx);
extern void pg_sha384_update(pg_sha384_ctx *ctx,
const uint8 *, size_t len);
extern void pg_sha384_final(pg_sha384_ctx *ctx, uint8 *dest);
extern void pg_sha512_init(pg_sha512_ctx *ctx);
extern void pg_sha512_update(pg_sha512_ctx *ctx, const uint8 *input0,
size_t len);
extern void pg_sha512_final(pg_sha512_ctx *ctx, uint8 *dest);
#endif /* _PG_SHA2_H_ */
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