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	1	/*
	2	* FILE: sha2.h
	3	* AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/
	4	*
	5	* Copyright (c) 2000-2001, Aaron D. Gifford
	6	* All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. Neither the name of the copyright holder nor the names of contributors
	17	* may be used to endorse or promote products derived from this software
	18	* without specific prior written permission.
	19	*
	20	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
	21	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
	24	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	* SUCH DAMAGE.
	31	*
	32	* $Id: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
	33	*/
	34
	35	#ifndef __SHA2_H__
	36	#define __SHA2_H__
	37
	38	/*
	39	* Import u_intXX_t size_t type definitions from system headers. You
	40	* may need to change this, or define these things yourself in this
	41	* file.
	42	*/
	43	#include <sys/types.h>
	44
	45	#ifdef SHA2_USE_INTTYPES_H
	46
	47	#include <stddef.h>
	48	#include <inttypes.h>
	49
	50	#endif /* SHA2_USE_INTTYPES_H */
	51
	52
	53	/* SHA-256/384/512 Various Length Definitions *********************/
	54	#define SHA256_BLOCK_LENGTH 64
	55	#define SHA256_DIGEST_LENGTH 32
	56	#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
	57	#define SHA384_BLOCK_LENGTH 128
	58	#define SHA384_DIGEST_LENGTH 48
	59	#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
	60	#define SHA512_BLOCK_LENGTH 128
	61	#define SHA512_DIGEST_LENGTH 64
	62	#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
	63
	64
	65	/* SHA-256/384/512 Context Structures *****************************/
	66	/* NOTE: If your architecture does not define either u_intXX_t types or
	67	* uintXX_t (from inttypes.h), you may need to define things by hand
	68	* for your system:
	69	*/
	70	#if 0
	71	typedef unsigned char u_int8_t; /* 1-byte (8-bits) */
	72	typedef unsigned int u_int32_t; /* 4-bytes (32-bits) */
	73	typedef unsigned long long u_int64_t; /* 8-bytes (64-bits) */
	74	#endif
	75	/*
	76	* Most BSD systems already define u_intXX_t types, as does Linux.
	77	* Some systems, however, like Compaq's Tru64 Unix instead can use
	78	* uintXX_t types defined by very recent ANSI C standards and included
	79	* in the file:
	80	*
	81	* #include <inttypes.h>
	82	*
	83	* If you choose to use <inttypes.h> then please define:
	84	*
	85	* #define SHA2_USE_INTTYPES_H
	86	*
	87	* Or on the command line during compile:
	88	*
	89	* cc -DSHA2_USE_INTTYPES_H ...
	90	*/
	91	#ifdef SHA2_USE_INTTYPES_H
	92
	93	typedef struct _SHA256_CTX {
	94	uint32_t state[8];
	95	uint64_t bitcount;
	96	uint8_t buffer[SHA256_BLOCK_LENGTH];
	97	} SHA256_CTX;
	98	typedef struct _SHA512_CTX {
	99	uint64_t state[8];
	100	uint64_t bitcount[2];
	101	uint8_t buffer[SHA512_BLOCK_LENGTH];
	102	} SHA512_CTX;
	103
	104	#else /* SHA2_USE_INTTYPES_H */
	105
	106	typedef struct _SHA256_CTX {
	107	u_int32_t state[8];
	108	u_int64_t bitcount;
	109	u_int8_t buffer[SHA256_BLOCK_LENGTH];
	110	} SHA256_CTX;
	111	typedef struct _SHA512_CTX {
	112	u_int64_t state[8];
	113	u_int64_t bitcount[2];
	114	u_int8_t buffer[SHA512_BLOCK_LENGTH];
	115	} SHA512_CTX;
	116
	117	#endif /* SHA2_USE_INTTYPES_H */
	118
	119	typedef SHA512_CTX SHA384_CTX;
	120
	121
	122	/* SHA-256/384/512 Function Prototypes ****************************/
	123	#ifndef NOPROTO
	124	#ifdef SHA2_USE_INTTYPES_H
	125
	126	void SHA256_Init(SHA256_CTX *);
	127	void SHA256_Update(SHA256_CTX, const uint8_t, size_t);
	128	void SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
	129	char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
	130	char* SHA256_Data(const uint8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
	131
	132	void SHA384_Init(SHA384_CTX*);
	133	void SHA384_Update(SHA384_CTX, const uint8_t, size_t);
	134	void SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
	135	char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
	136	char* SHA384_Data(const uint8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
	137
	138	void SHA512_Init(SHA512_CTX*);
	139	void SHA512_Update(SHA512_CTX, const uint8_t, size_t);
	140	void SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
	141	char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
	142	char* SHA512_Data(const uint8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
	143
	144	#else /* SHA2_USE_INTTYPES_H */
	145
	146	void SHA256_Init(SHA256_CTX *);
	147	void SHA256_Update(SHA256_CTX, const u_int8_t, size_t);
	148	void SHA256_Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
	149	char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
	150	char* SHA256_Data(const u_int8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
	151
	152	void SHA384_Init(SHA384_CTX*);
	153	void SHA384_Update(SHA384_CTX, const u_int8_t, size_t);
	154	void SHA384_Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
	155	char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
	156	char* SHA384_Data(const u_int8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
	157
	158	void SHA512_Init(SHA512_CTX*);
	159	void SHA512_Update(SHA512_CTX, const u_int8_t, size_t);
	160	void SHA512_Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
	161	char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
	162	char* SHA512_Data(const u_int8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
	163
	164	#endif /* SHA2_USE_INTTYPES_H */
	165
	166	#else /* NOPROTO */
	167
	168	void SHA256_Init();
	169	void SHA256_Update();
	170	void SHA256_Final();
	171	char* SHA256_End();
	172	char* SHA256_Data();
	173
	174	void SHA384_Init();
	175	void SHA384_Update();
	176	void SHA384_Final();
	177	char* SHA384_End();
	178	char* SHA384_Data();
	179
	180	void SHA512_Init();
	181	void SHA512_Update();
	182	void SHA512_Final();
	183	char* SHA512_End();
	184	char* SHA512_Data();
	185
	186	#endif /* NOPROTO */
	187
	188	#endif /* __SHA2_H__ */
	189