Current File : //data/old/usr/local/include/znc/SHA256.h
/*
* FIPS 180-2 SHA-224/256/384/512 implementation
* Last update: 02/02/2007
* Issue date: 04/30/2005
*
* Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
* 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 project 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 PROJECT 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 PROJECT 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 ZNC_SHA2_H
#define ZNC_SHA2_H
#define SHA256_DIGEST_SIZE (256 / 8)
#define SHA256_BLOCK_SIZE (512 / 8)
#include <znc/zncconfig.h>
// C99 defines stdint.h which defines a uint32_t and uint8_t type.
// But the other kids didn't want to play with poor little Solaris 9 and so he
// just defines these in inttypes.h which is also part of C99 and is supposed to
// include stdint.h. Solaris 9 is a weirdo. :(
#include <inttypes.h>
#include <cstddef>
typedef struct {
size_t tot_len;
size_t len;
unsigned char block[2 * SHA256_BLOCK_SIZE];
uint32_t h[8];
} sha256_ctx;
void sha256_init(sha256_ctx* ctx);
void sha256_update(sha256_ctx* ctx, const unsigned char* message, size_t len);
void sha256_final(sha256_ctx* ctx, unsigned char* digest);
void sha256(const unsigned char* message, size_t len, unsigned char* digest);
#endif /* !ZNC_SHA2_H */
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