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/**
* \file lib/sha2.h
*
* \brief Header for sha2.c - Implementation of the SHA 26/384/512 digests.
*/
/* AUTHOR: Aaron D. Gifford - http://www.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.
*
*****************************************************************************
*/
#ifndef __SHA2_H__
#define __SHA2_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "common.h"
/*
* Import u_intXX_t size_t type definitions from system headers. You
* may need to change this, or define these things yourself in this
* file.
*/
#include <sys/types.h>
#if HAVE_INTTYPES_H
#define SHA2_USE_INTTYPES_H
#endif
#ifdef SHA2_USE_INTTYPES_H
#include <inttypes.h>
#endif /* SHA2_USE_INTTYPES_H */
/* Make sure we keep this below the check above.
*/
#ifdef WIN32
#define SHA2_USE_INTTYPES_H 1
#endif
/*** SHA-256/384/512 Various Length Definitions ***********************/
#define SHA256_BLOCK_LEN 64
#define SHA256_DIGEST_LEN 32
#define SHA256_DIGEST_STR_LEN (SHA256_DIGEST_LEN * 2 + 1)
#define SHA256_B64_LEN 43
#define SHA384_BLOCK_LEN 128
#define SHA384_DIGEST_LEN 48
#define SHA384_DIGEST_STR_LEN (SHA384_DIGEST_LEN * 2 + 1)
#define SHA384_B64_LEN 64
#define SHA512_BLOCK_LEN 128
#define SHA512_DIGEST_LEN 64
#define SHA512_DIGEST_STR_LEN (SHA512_DIGEST_LEN * 2 + 1)
#define SHA512_B64_LEN 86
/*** SHA-256/384/512 Context Structures *******************************/
/* NOTE: If your architecture does not define either u_intXX_t types or
* uintXX_t (from inttypes.h), you may need to define things by hand
* for your system:
*/
#if 0
typedef unsigned char u_int8_t; /* 1-byte (8-bits) */
typedef unsigned int u_int32_t; /* 4-bytes (32-bits) */
typedef unsigned long long u_int64_t; /* 8-bytes (64-bits) */
#endif
/*
* Most BSD systems already define u_intXX_t types, as does Linux.
* Some systems, however, like Compaq's Tru64 Unix instead can use
* uintXX_t types defined by very recent ANSI C standards and included
* in the file:
*
* #include <inttypes.h>
*
* If you choose to use <inttypes.h> then please define:
*
* #define SHA2_USE_INTTYPES_H
*
* Or on the command line during compile:
*
* cc -DSHA2_USE_INTTYPES_H ...
*/
#ifdef SHA2_USE_INTTYPES_H
typedef struct _SHA256_CTX {
uint32_t state[8];
uint64_t bitcount;
uint8_t buffer[SHA256_BLOCK_LEN];
} SHA256_CTX;
typedef struct _SHA512_CTX {
uint64_t state[8];
uint64_t bitcount[2];
uint8_t buffer[SHA512_BLOCK_LEN];
} SHA512_CTX;
#else /* SHA2_USE_INTTYPES_H */
typedef struct _SHA256_CTX {
u_int32_t state[8];
u_int64_t bitcount;
u_int8_t buffer[SHA256_BLOCK_LEN];
} SHA256_CTX;
typedef struct _SHA512_CTX {
u_int64_t state[8];
u_int64_t bitcount[2];
u_int8_t buffer[SHA512_BLOCK_LEN];
} SHA512_CTX;
#endif /* SHA2_USE_INTTYPES_H */
typedef SHA512_CTX SHA384_CTX;
/*** SHA-256/384/512 Function Prototypes ******************************/
#ifndef NOPROTO
#ifdef SHA2_USE_INTTYPES_H
void SHA256_Init(SHA256_CTX *);
void SHA256_Update(SHA256_CTX*, const uint8_t*, size_t);
void SHA256_Final(uint8_t[SHA256_DIGEST_LEN], SHA256_CTX*);
void SHA384_Init(SHA384_CTX*);
void SHA384_Update(SHA384_CTX*, const uint8_t*, size_t);
void SHA384_Final(uint8_t[SHA384_DIGEST_LEN], SHA384_CTX*);
void SHA512_Init(SHA512_CTX*);
void SHA512_Update(SHA512_CTX*, const uint8_t*, size_t);
void SHA512_Final(uint8_t[SHA512_DIGEST_LEN], SHA512_CTX*);
#else /* SHA2_USE_INTTYPES_H */
void SHA256_Init(SHA256_CTX *);
void SHA256_Update(SHA256_CTX*, const u_int8_t*, size_t);
void SHA256_Final(u_int8_t[SHA256_DIGEST_LEN], SHA256_CTX*);
void SHA384_Init(SHA384_CTX*);
void SHA384_Update(SHA384_CTX*, const u_int8_t*, size_t);
void SHA384_Final(u_int8_t[SHA384_DIGEST_LEN], SHA384_CTX*);
void SHA512_Init(SHA512_CTX*);
void SHA512_Update(SHA512_CTX*, const u_int8_t*, size_t);
void SHA512_Final(u_int8_t[SHA512_DIGEST_LEN], SHA512_CTX*);
#endif /* SHA2_USE_INTTYPES_H */
#else /* NOPROTO */
void SHA256_Init();
void SHA256_Update();
void SHA256_Final();
void SHA384_Init();
void SHA384_Update();
void SHA384_Final();
void SHA512_Init();
void SHA512_Update();
void SHA512_Final();
#endif /* NOPROTO */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __SHA2_H__ */