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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 <inttypes.h>
	48
	49	#endif /* SHA2_USE_INTTYPES_H */
	50
	51
	52	/* SHA-256/384/512 Various Length Definitions *********************/
	53	#define SHA256_BLOCK_LENGTH 64
	54	#define SHA256_DIGEST_LENGTH 32
	55	#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
	56	#define SHA384_BLOCK_LENGTH 128
	57	#define SHA384_DIGEST_LENGTH 48
	58	#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
	59	#define SHA512_BLOCK_LENGTH 128
	60	#define SHA512_DIGEST_LENGTH 64
	61	#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
	62
	63
	64	/* SHA-256/384/512 Context Structures *****************************/
	65	/* NOTE: If your architecture does not define either u_intXX_t types or
	66	* uintXX_t (from inttypes.h), you may need to define things by hand
	67	* for your system:
	68	*/
	69	#if 0
	70	typedef unsigned char u_int8_t; /* 1-byte (8-bits) */
	71	typedef unsigned int u_int32_t; /* 4-bytes (32-bits) */
	72	typedef unsigned long long u_int64_t; /* 8-bytes (64-bits) */
	73	#endif
	74	/*
	75	* Most BSD systems already define u_intXX_t types, as does Linux.
	76	* Some systems, however, like Compaq's Tru64 Unix instead can use
	77	* uintXX_t types defined by very recent ANSI C standards and included
	78	* in the file:
	79	*
	80	* #include <inttypes.h>
	81	*
	82	* If you choose to use <inttypes.h> then please define:
	83	*
	84	* #define SHA2_USE_INTTYPES_H
	85	*
	86	* Or on the command line during compile:
	87	*
	88	* cc -DSHA2_USE_INTTYPES_H ...
	89	*/
	90	#ifdef SHA2_USE_INTTYPES_H
	91
	92	typedef struct _SHA256_CTX {
	93	uint32_t state[8];
	94	uint64_t bitcount;
	95	uint8_t buffer[SHA256_BLOCK_LENGTH];
	96	} SHA256_CTX;
	97	typedef struct _SHA512_CTX {
	98	uint64_t state[8];
	99	uint64_t bitcount[2];
	100	uint8_t buffer[SHA512_BLOCK_LENGTH];
	101	} SHA512_CTX;
	102
	103	#else /* SHA2_USE_INTTYPES_H */
	104
	105	typedef struct _SHA256_CTX {
	106	u_int32_t state[8];
	107	u_int64_t bitcount;
	108	u_int8_t buffer[SHA256_BLOCK_LENGTH];
	109	} SHA256_CTX;
	110	typedef struct _SHA512_CTX {
	111	u_int64_t state[8];
	112	u_int64_t bitcount[2];
	113	u_int8_t buffer[SHA512_BLOCK_LENGTH];
	114	} SHA512_CTX;
	115
	116	#endif /* SHA2_USE_INTTYPES_H */
	117
	118	typedef SHA512_CTX SHA384_CTX;
	119
	120
	121	/* SHA-256/384/512 Function Prototypes ****************************/
	122	#ifndef NOPROTO
	123	#ifdef SHA2_USE_INTTYPES_H
	124
	125	void SHA256_Init(SHA256_CTX *);
	126	void SHA256_Update(SHA256_CTX, const uint8_t, size_t);
	127	void SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
	128	char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
	129	char* SHA256_Data(const uint8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
	130
	131	void SHA384_Init(SHA384_CTX*);
	132	void SHA384_Update(SHA384_CTX, const uint8_t, size_t);
	133	void SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
	134	char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
	135	char* SHA384_Data(const uint8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
	136
	137	void SHA512_Init(SHA512_CTX*);
	138	void SHA512_Update(SHA512_CTX, const uint8_t, size_t);
	139	void SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
	140	char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
	141	char* SHA512_Data(const uint8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
	142
	143	#else /* SHA2_USE_INTTYPES_H */
	144
	145	void SHA256_Init(SHA256_CTX *);
	146	void SHA256_Update(SHA256_CTX, const u_int8_t, size_t);
	147	void SHA256_Final(u_int8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
	148	char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
	149	char* SHA256_Data(const u_int8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
	150
	151	void SHA384_Init(SHA384_CTX*);
	152	void SHA384_Update(SHA384_CTX, const u_int8_t, size_t);
	153	void SHA384_Final(u_int8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
	154	char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
	155	char* SHA384_Data(const u_int8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
	156
	157	void SHA512_Init(SHA512_CTX*);
	158	void SHA512_Update(SHA512_CTX, const u_int8_t, size_t);
	159	void SHA512_Final(u_int8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
	160	char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
	161	char* SHA512_Data(const u_int8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
	162
	163	#endif /* SHA2_USE_INTTYPES_H */
	164
	165	#else /* NOPROTO */
	166
	167	void SHA256_Init();
	168	void SHA256_Update();
	169	void SHA256_Final();
	170	char* SHA256_End();
	171	char* SHA256_Data();
	172
	173	void SHA384_Init();
	174	void SHA384_Update();
	175	void SHA384_Final();
	176	char* SHA384_End();
	177	char* SHA384_Data();
	178
	179	void SHA512_Init();
	180	void SHA512_Update();
	181	void SHA512_Final();
	182	char* SHA512_End();
	183	char* SHA512_Data();
	184
	185	#endif /* NOPROTO */
	186
	187	#endif /* __SHA2_H__ */
	188