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/*
* FIPS 180-2 SHA-224/256/384/512 implementation
*
* Copyright (C) 2005-2023 Olivier Gay <olivier.gay@a3.epfl.ch>
* 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 project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
*/
#ifndef SHA2_H
#define SHA2_H
#define SHA224_DIGEST_SIZE ( 224 / 8)
#define SHA256_DIGEST_SIZE ( 256 / 8)
#define SHA384_DIGEST_SIZE ( 384 / 8)
#define SHA512_DIGEST_SIZE ( 512 / 8)
#define SHA256_BLOCK_SIZE ( 512 / 8)
#define SHA512_BLOCK_SIZE (1024 / 8)
#define SHA384_BLOCK_SIZE SHA512_BLOCK_SIZE
#define SHA224_BLOCK_SIZE SHA256_BLOCK_SIZE
#ifndef SHA2_TYPES
#define SHA2_TYPES
typedef unsigned char uint8;
typedef unsigned int uint32;
typedef unsigned long long uint64;
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
uint64 tot_len;
uint64 len;
uint8 block[2 * SHA256_BLOCK_SIZE];
uint32 h[8];
} sha256_ctx;
typedef struct {
uint64 tot_len;
uint64 len;
uint8 block[2 * SHA512_BLOCK_SIZE];
uint64 h[8];
} sha512_ctx;
typedef sha512_ctx sha384_ctx;
typedef sha256_ctx sha224_ctx;
void camlpdf_sha224_init(sha224_ctx *ctx);
void camlpdf_sha224_update(sha224_ctx *ctx, const uint8 *message, uint64 len);
void camlpdf_sha224_final(sha224_ctx *ctx, uint8 *digest);
void camlpdf_sha224(const uint8 *message, uint64 len, uint8 *digest);
void camlpdf_sha256_init(sha256_ctx * ctx);
void camlpdf_sha256_update(sha256_ctx *ctx, const uint8 *message, uint64 len);
void camlpdf_sha256_final(sha256_ctx *ctx, uint8 *digest);
void camlpdf_sha256(const uint8 *message, uint64 len, uint8 *digest);
void camlpdf_sha384_init(sha384_ctx *ctx);
void camlpdf_sha384_update(sha384_ctx *ctx, const uint8 *message, uint64 len);
void camlpdf_sha384_final(sha384_ctx *ctx, uint8 *digest);
void camlpdf_sha384(const uint8 *message, uint64 len, uint8 *digest);
void camlpdf_sha512_init(sha512_ctx *ctx);
void camlpdf_sha512_update(sha512_ctx *ctx, const uint8 *message, uint64 len);
void camlpdf_sha512_final(sha512_ctx *ctx, uint8 *digest);
void camlpdf_sha512(const uint8 *message, uint64 len, uint8 *digest);
#ifdef __cplusplus
}
#endif
#endif /* !SHA2_H */
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