/* OpenBSD: sha2.h,v 1.6 2004/06/22 01:57:30 jfb 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 $
*/
/* OPENBSD ORIGINAL: include/sha2.h */
#ifndef _SSHSHA2_H
#define _SSHSHA2_H
#include "includes.h"
#ifdef WITH_OPENSSL
# include <openssl/opensslv.h>
# if !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L)
# define _NEED_SHA2 1
# endif
#else
# define _NEED_SHA2 1
#endif
#if defined(_NEED_SHA2) && !defined(HAVE_SHA256_UPDATE)
/*** 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 Structures *******************************/
typedef struct _SHA256_CTX {
u_int32_t state[8];
u_int64_t bitcount;
u_int8_t buffer[SHA256_BLOCK_LENGTH];
} SHA256_CTX;
typedef struct _SHA512_CTX {
u_int64_t state[8];
u_int64_t bitcount[2];
u_int8_t buffer[SHA512_BLOCK_LENGTH];
} SHA512_CTX;
typedef SHA512_CTX SHA384_CTX;
void SHA256_Init(SHA256_CTX *);
void SHA256_Transform(u_int32_t state[8], const u_int8_t [SHA256_BLOCK_LENGTH]);
void SHA256_Update(SHA256_CTX *, const u_int8_t *, size_t)
__attribute__((__bounded__(__string__,2,3)));
void SHA256_Pad(SHA256_CTX *);
void SHA256_Final(u_int8_t [SHA256_DIGEST_LENGTH], SHA256_CTX *)
__attribute__((__bounded__(__minbytes__,1,SHA256_DIGEST_LENGTH)));
char *SHA256_End(SHA256_CTX *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
char *SHA256_File(const char *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
char *SHA256_FileChunk(const char *, char *, off_t, off_t)
__attribute__((__bounded__(__minbytes__,2,SHA256_DIGEST_STRING_LENGTH)));
char *SHA256_Data(const u_int8_t *, size_t, char *)
__attribute__((__bounded__(__string__,1,2)))
__attribute__((__bounded__(__minbytes__,3,SHA256_DIGEST_STRING_LENGTH)));
void SHA384_Init(SHA384_CTX *);
void SHA384_Transform(u_int64_t state[8], const u_int8_t [SHA384_BLOCK_LENGTH]);
void SHA384_Update(SHA384_CTX *, const u_int8_t *, size_t)
__attribute__((__bounded__(__string__,2,3)));
void SHA384_Pad(SHA384_CTX *);
void SHA384_Final(u_int8_t [SHA384_DIGEST_LENGTH], SHA384_CTX *)
__attribute__((__bounded__(__minbytes__,1,SHA384_DIGEST_LENGTH)));
char *SHA384_End(SHA384_CTX *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
char *SHA384_File(const char *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
char *SHA384_FileChunk(const char *, char *, off_t, off_t)
__attribute__((__bounded__(__minbytes__,2,SHA384_DIGEST_STRING_LENGTH)));
char *SHA384_Data(const u_int8_t *, size_t, char *)
__attribute__((__bounded__(__string__,1,2)))
__attribute__((__bounded__(__minbytes__,3,SHA384_DIGEST_STRING_LENGTH)));
void SHA512_Init(SHA512_CTX *);
void SHA512_Transform(u_int64_t state[8], const u_int8_t [SHA512_BLOCK_LENGTH]);
void SHA512_Update(SHA512_CTX *, const u_int8_t *, size_t)
__attribute__((__bounded__(__string__,2,3)));
void SHA512_Pad(SHA512_CTX *);
void SHA512_Final(u_int8_t [SHA512_DIGEST_LENGTH], SHA512_CTX *)
__attribute__((__bounded__(__minbytes__,1,SHA512_DIGEST_LENGTH)));
char *SHA512_End(SHA512_CTX *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
char *SHA512_File(const char *, char *)
__attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
char *SHA512_FileChunk(const char *, char *, off_t, off_t)
__attribute__((__bounded__(__minbytes__,2,SHA512_DIGEST_STRING_LENGTH)));
char *SHA512_Data(const u_int8_t *, size_t, char *)
__attribute__((__bounded__(__string__,1,2)))
__attribute__((__bounded__(__minbytes__,3,SHA512_DIGEST_STRING_LENGTH)));
#endif /* defined(_NEED_SHA2) && !defined(HAVE_SHA256_UPDATE) */
#endif /* _SSHSHA2_H */