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glibc/crypt/sha512.h
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/* Declaration of functions and data types used for SHA512 sum computing | |
library functions. | |
Copyright (C) 2007-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#ifndef _SHA512_H | |
#define _SHA512_H 1 | |
#include <limits.h> | |
#include <stdint.h> | |
#include <stdio.h> | |
#include <endian.h> | |
#include <bits/wordsize.h> | |
/* Structure to save state of computation between the single steps. */ | |
struct sha512_ctx | |
{ | |
uint64_t H[8]; | |
union | |
{ | |
#if defined __GNUC__ && __WORDSIZE == 64 | |
# define USE_TOTAL128 | |
unsigned int total128 __attribute__ ((__mode__ (TI))); | |
#endif | |
#define TOTAL128_low (1 - (BYTE_ORDER == LITTLE_ENDIAN)) | |
#define TOTAL128_high (BYTE_ORDER == LITTLE_ENDIAN) | |
uint64_t total[2]; | |
}; | |
uint64_t buflen; | |
union | |
{ | |
char buffer[256]; | |
uint64_t buffer64[32]; | |
}; | |
}; | |
/* Initialize structure containing state of computation. | |
(FIPS 180-2: 5.3.3) */ | |
extern void __sha512_init_ctx (struct sha512_ctx *ctx) __THROW; | |
/* Starting with the result of former calls of this function (or the | |
initialization function update the context for the next LEN bytes | |
starting at BUFFER. | |
It is NOT required that LEN is a multiple of 128. */ | |
extern void __sha512_process_bytes (const void *buffer, size_t len, | |
struct sha512_ctx *ctx) __THROW; | |
/* Process the remaining bytes in the buffer and put result from CTX | |
in first 64 bytes following RESBUF. | |
IMPORTANT: On some systems it is required that RESBUF is correctly | |
aligned for a 64 bits value. */ | |
extern void *__sha512_finish_ctx (struct sha512_ctx *ctx, void *resbuf) | |
__THROW; | |
#endif /* sha512.h */ |