/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/crypto/builtin/sha2/sha2.h - SHA-256 declarations */
/*
* Copyright (c) 1995 - 2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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.
*/
#ifndef SHA2_H
#define SHA2_H 1
#include <k5-int.h>
#define SHA256_DIGEST_LENGTH 32
#define SHA384_DIGEST_LENGTH 48
#define SHA512_DIGEST_LENGTH 64
#define SHA256_BLOCK_SIZE 64
#define SHA384_BLOCK_SIZE 128
#define SHA512_BLOCK_SIZE 128
struct sha256state {
unsigned int sz[2];
uint32_t counter[8];
unsigned char save[64];
};
struct sha512state {
uint64_t sz[2];
uint64_t counter[8];
unsigned char save[128];
};
/* SHA-384 and SHA-512 use the same state object. */
typedef struct sha256state SHA256_CTX;
typedef struct sha512state SHA384_CTX;
typedef struct sha512state SHA512_CTX;
void k5_sha256_init(SHA256_CTX *);
void k5_sha256_update(SHA256_CTX *, const void *, size_t);
void k5_sha256_final(void *, SHA256_CTX *);
void k5_sha384_init(SHA384_CTX *);
void k5_sha384_update(SHA384_CTX *, const void *, size_t);
void k5_sha384_final(void *, SHA384_CTX *);
void k5_sha512_init(SHA512_CTX *);
void k5_sha512_update(SHA512_CTX *, const void *, size_t);
void k5_sha512_final(void *, SHA512_CTX *);
#endif /* SHA2_H */