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/* $OpenBSD: sha2.h,v 1.10 2016/09/03 17:00:29 tedu 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 _SHA2_H
#define _SHA2_H
#include <sys/types.h>
#include <stdint.h>
/*** SHA-224/256/384/512 Various Length Definitions ***********************/
#define SHA224_BLOCK_LENGTH 64
#define SHA224_DIGEST_LENGTH 28
#define SHA224_DIGEST_STRING_LENGTH (SHA224_DIGEST_LENGTH * 2 + 1)
#define SHA256_BLOCK_LENGTH 64
#define SHA256_DIGEST_LENGTH 32
#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
#define SHA384_BLOCK_LENGTH 128
#define SHA384_DIGEST_LENGTH 48
#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64
#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
#define SHA512_256_BLOCK_LENGTH 128
#define SHA512_256_DIGEST_LENGTH 32
#define SHA512_256_DIGEST_STRING_LENGTH (SHA512_256_DIGEST_LENGTH * 2 + 1)
/*** SHA-224/256/384/512 Context Structure *******************************/
typedef struct _SHA2_CTX {
union {
uint32_t st32[8];
uint64_t st64[8];
} state;
uint64_t bitcount[2];
uint8_t buffer[SHA512_BLOCK_LENGTH];
} SHA2_CTX;
#ifdef __cplusplus
extern "C" {
#endif
void SHA224Init(SHA2_CTX *);
void SHA224Transform(uint32_t state[8], const uint8_t [SHA224_BLOCK_LENGTH]);
void SHA224Update(SHA2_CTX *, const uint8_t *, size_t);
void SHA224Pad(SHA2_CTX *);
void SHA224Final(uint8_t [SHA224_DIGEST_LENGTH], SHA2_CTX *);
char *SHA224End(SHA2_CTX *, char *);
char *SHA224File(const char *, char *);
char *SHA224FileChunk(const char *, char *, off_t, off_t);
char *SHA224Data(const uint8_t *, size_t, char *);
void SHA256Init(SHA2_CTX *);
void SHA256Transform(uint32_t state[8], const uint8_t [SHA256_BLOCK_LENGTH]);
void SHA256Update(SHA2_CTX *, const uint8_t *, size_t);
void SHA256Pad(SHA2_CTX *);
void SHA256Final(uint8_t [SHA256_DIGEST_LENGTH], SHA2_CTX *);
char *SHA256End(SHA2_CTX *, char *);
char *SHA256File(const char *, char *);
char *SHA256FileChunk(const char *, char *, off_t, off_t);
char *SHA256Data(const uint8_t *, size_t, char *);
void SHA384Init(SHA2_CTX *);
void SHA384Transform(uint64_t state[8], const uint8_t [SHA384_BLOCK_LENGTH]);
void SHA384Update(SHA2_CTX *, const uint8_t *, size_t);
void SHA384Pad(SHA2_CTX *);
void SHA384Final(uint8_t [SHA384_DIGEST_LENGTH], SHA2_CTX *);
char *SHA384End(SHA2_CTX *, char *);
char *SHA384File(const char *, char *);
char *SHA384FileChunk(const char *, char *, off_t, off_t);
char *SHA384Data(const uint8_t *, size_t, char *);
void SHA512Init(SHA2_CTX *);
void SHA512Transform(uint64_t state[8], const uint8_t [SHA512_BLOCK_LENGTH]);
void SHA512Update(SHA2_CTX *, const uint8_t *, size_t);
void SHA512Pad(SHA2_CTX *);
void SHA512Final(uint8_t [SHA512_DIGEST_LENGTH], SHA2_CTX *);
char *SHA512End(SHA2_CTX *, char *);
char *SHA512File(const char *, char *);
char *SHA512FileChunk(const char *, char *, off_t, off_t);
char *SHA512Data(const uint8_t *, size_t, char *);
void SHA512_256Init(SHA2_CTX *);
void SHA512_256Transform(uint64_t state[8], const uint8_t [SHA512_256_BLOCK_LENGTH]);
void SHA512_256Update(SHA2_CTX *, const uint8_t *, size_t);
void SHA512_256Pad(SHA2_CTX *);
void SHA512_256Final(uint8_t [SHA512_256_DIGEST_LENGTH], SHA2_CTX *);
char *SHA512_256End(SHA2_CTX *, char *);
char *SHA512_256File(const char *, char *);
char *SHA512_256FileChunk(const char *, char *, off_t, off_t);
char *SHA512_256Data(const uint8_t *, size_t, char *);
#ifdef __cplusplus
}
#endif
#endif /* _SHA2_H */
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