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Fish (David B. Trout) a09ce061b0 (cosmetic: remove tabs)
2018-05-15 20:50:30 -07:00

118 lines
4.2 KiB
C

/* $OpenBSD: sha2.h,v 1.5 2014/11/16 17:39:09 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
/*** SHA-256/384/512 Various Length Definitions ***********************/
#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)
/*** SHA-256/384/512 Context Structure *******************************/
typedef struct _SHA2_CTX {
union {
u_int32_t st32[8];
u_int64_t st64[8];
} state;
u_int64_t bitcount[2];
u_int8_t buffer[SHA512_BLOCK_LENGTH];
} SHA2_CTX;
#if defined( CRYPTO_EXTPKG_MOD )
#ifndef __BEGIN_DECLS
#ifdef __cplusplus
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#else
#define __BEGIN_DECLS
#define __END_DECLS
#endif
#endif
#ifdef __GNUC__
#define __attribute__(x) __attribute__(x)
#else
#define __attribute__(x) /* (nothing) */
#endif
/**********************************************************************
*
* PROGRAMMING NOTE
*
* The below functions are used internally by the library and forms
* the core of its algorithms.
*
* Most programs would normally use the SHAxxxInit(), SHAxxxUpdate(),
* and SHAxxxFinal() functions instead of calling SHAxxxTransform()
* or SHAxxxLast() directly.
*
* They are only exposed here in case you have a legitimate need to
* call them directly.
*
*********************************************************************/
void SHA256Transform(u_int32_t *, const u_int8_t *);
void SHA512Transform(u_int64_t *, const u_int8_t *);
void SHA512Last(SHA2_CTX *);
#endif // defined( CRYPTO_EXTPKG_MOD )
__BEGIN_DECLS
void SHA256Init(SHA2_CTX *);
void SHA256Update(SHA2_CTX *, const void *, size_t);
void SHA256Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA2_CTX *);
void SHA384Init(SHA2_CTX *);
void SHA384Update(SHA2_CTX *, const void *, size_t);
void SHA384Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA2_CTX *);
void SHA512Init(SHA2_CTX *);
void SHA512Update(SHA2_CTX *, const void *, size_t);
void SHA512Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA2_CTX *);
__END_DECLS
#endif /* _SHA2_H */