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/* $OpenBSD: sha.h,v 1.25 2024/06/01 08:11:44 tb Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 CONTRIBUTORS 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stddef.h>
#ifndef HEADER_SHA_H
#define HEADER_SHA_H
#if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__OpenBSD__)
#define __bounded__(x, y, z)
#endif
#include <openssl/opensslconf.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA1)
#error SHA is disabled.
#endif
/*
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* ! SHA_LONG has to be at least 32 bits wide. !
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/
#define SHA_LONG unsigned int
#define SHA_LBLOCK 16
#define SHA_CBLOCK (SHA_LBLOCK*4) /* SHA treats input data as a
* contiguous array of 32 bit
* wide big-endian values. */
#define SHA_LAST_BLOCK (SHA_CBLOCK-8)
#define SHA_DIGEST_LENGTH 20
typedef struct SHAstate_st {
SHA_LONG h0, h1, h2, h3, h4;
SHA_LONG Nl, Nh;
SHA_LONG data[SHA_LBLOCK];
unsigned int num;
} SHA_CTX;
#ifndef OPENSSL_NO_SHA1
int SHA1_Init(SHA_CTX *c);
int SHA1_Update(SHA_CTX *c, const void *data, size_t len)
__attribute__ ((__bounded__(__buffer__, 2, 3)));
int SHA1_Final(unsigned char *md, SHA_CTX *c);
unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md)
__attribute__ ((__bounded__(__buffer__, 1, 2)))
__attribute__ ((__nonnull__(3)));
void SHA1_Transform(SHA_CTX *c, const unsigned char *data);
#endif
#define SHA256_CBLOCK (SHA_LBLOCK*4) /* SHA-256 treats input data as a
* contiguous array of 32 bit
* wide big-endian values. */
#define SHA224_DIGEST_LENGTH 28
#define SHA256_DIGEST_LENGTH 32
typedef struct SHA256state_st {
SHA_LONG h[8];
SHA_LONG Nl, Nh;
SHA_LONG data[SHA_LBLOCK];
unsigned int num, md_len;
} SHA256_CTX;
#ifndef OPENSSL_NO_SHA256
int SHA224_Init(SHA256_CTX *c);
int SHA224_Update(SHA256_CTX *c, const void *data, size_t len)
__attribute__ ((__bounded__(__buffer__, 2, 3)));
int SHA224_Final(unsigned char *md, SHA256_CTX *c);
unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md)
__attribute__ ((__bounded__(__buffer__, 1, 2)))
__attribute__ ((__nonnull__(3)));
int SHA256_Init(SHA256_CTX *c);
int SHA256_Update(SHA256_CTX *c, const void *data, size_t len)
__attribute__ ((__bounded__(__buffer__, 2, 3)));
int SHA256_Final(unsigned char *md, SHA256_CTX *c);
unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md)
__attribute__ ((__bounded__(__buffer__, 1, 2)))
__attribute__ ((__nonnull__(3)));
void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
#endif
#define SHA384_DIGEST_LENGTH 48
#define SHA512_DIGEST_LENGTH 64
#ifndef OPENSSL_NO_SHA512
/*
* Unlike 32-bit digest algorithms, SHA-512 *relies* on SHA_LONG64
* being exactly 64-bit wide. See Implementation Notes in sha512.c
* for further details.
*/
#define SHA512_CBLOCK (SHA_LBLOCK*8) /* SHA-512 treats input data as a
* contiguous array of 64 bit
* wide big-endian values. */
#if defined(_LP64)
#define SHA_LONG64 unsigned long
#define U64(C) C##UL
#else
#define SHA_LONG64 unsigned long long
#define U64(C) C##ULL
#endif
typedef struct SHA512state_st {
SHA_LONG64 h[8];
SHA_LONG64 Nl, Nh;
union {
SHA_LONG64 d[SHA_LBLOCK];
unsigned char p[SHA512_CBLOCK];
} u;
unsigned int num, md_len;
} SHA512_CTX;
#endif
#ifndef OPENSSL_NO_SHA512
int SHA384_Init(SHA512_CTX *c);
int SHA384_Update(SHA512_CTX *c, const void *data, size_t len)
__attribute__ ((__bounded__(__buffer__, 2, 3)));
int SHA384_Final(unsigned char *md, SHA512_CTX *c);
unsigned char *SHA384(const unsigned char *d, size_t n, unsigned char *md)
__attribute__ ((__bounded__(__buffer__, 1, 2)))
__attribute__ ((__nonnull__(3)));
int SHA512_Init(SHA512_CTX *c);
int SHA512_Update(SHA512_CTX *c, const void *data, size_t len)
__attribute__ ((__bounded__(__buffer__, 2, 3)));
int SHA512_Final(unsigned char *md, SHA512_CTX *c);
unsigned char *SHA512(const unsigned char *d, size_t n, unsigned char *md)
__attribute__ ((__bounded__(__buffer__, 1, 2)))
__attribute__ ((__nonnull__(3)));
void SHA512_Transform(SHA512_CTX *c, const unsigned char *data);
#endif
#ifdef __cplusplus
}
#endif
#endif
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