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md5.h
Go to the documentation of this file.
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/* Declaration of functions and data types used for MD5 sum computing
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library functions.
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Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2012 Free Software
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Foundation, Inc.
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This file is part of the GNU C Library.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2.1, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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#ifndef _MD5_H
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#define _MD5_H 1
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#include <stdio.h>
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#include <stdint.h>
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#define MD5_DIGEST_SIZE 16
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#define MD5_BLOCK_SIZE 64
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#ifndef __GNUC_PREREQ
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# define __GNUC_PREREQ(maj, min) \
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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# else
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# define __GNUC_PREREQ(maj, min) 0
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# endif
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#endif
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#ifndef __THROW
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# if defined __cplusplus && __GNUC_PREREQ (2,8)
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# define __THROW throw ()
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# else
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# define __THROW
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# endif
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#endif
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#ifndef _LIBC
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# define __md5_buffer md5_buffer
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# define __md5_finish_ctx md5_finish_ctx
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# define __md5_init_ctx md5_init_ctx
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# define __md5_process_block md5_process_block
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# define __md5_process_bytes md5_process_bytes
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# define __md5_read_ctx md5_read_ctx
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# define __md5_stream md5_stream
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#endif
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# ifdef __cplusplus
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extern
"C"
{
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# endif
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/* Structure to save state of computation between the single steps. */
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struct
md5_ctx
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{
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uint32_t
A
;
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uint32_t
B
;
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uint32_t
C
;
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uint32_t
D
;
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uint32_t
total
[2];
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uint32_t
buflen
;
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uint32_t
buffer
[32];
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};
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/*
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* The following three functions are build up the low level used in
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* the functions 'md5_stream' and 'md5_buffer'.
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*/
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/* Initialize structure containing state of computation.
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(RFC 1321, 3.3: Step 3) */
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extern
void
__md5_init_ctx
(
struct
md5_ctx
*ctx)
__THROW
;
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is necessary that LEN is a multiple of 64!!! */
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extern
void
__md5_process_block
(
const
void
*
buffer
,
size_t
len,
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struct
md5_ctx
*ctx)
__THROW
;
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is NOT required that LEN is a multiple of 64. */
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extern
void
__md5_process_bytes
(
const
void
*
buffer
,
size_t
len,
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struct
md5_ctx
*ctx)
__THROW
;
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/* Process the remaining bytes in the buffer and put result from CTX
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in first 16 bytes following RESBUF. The result is always in little
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endian byte order, so that a byte-wise output yields to the wanted
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ASCII representation of the message digest. */
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extern
void
*
__md5_finish_ctx
(
struct
md5_ctx
*ctx,
void
*resbuf)
__THROW
;
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/* Put result from CTX in first 16 bytes following RESBUF. The result is
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always in little endian byte order, so that a byte-wise output yields
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to the wanted ASCII representation of the message digest. */
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extern
void
*
__md5_read_ctx
(
const
struct
md5_ctx
*ctx,
void
*resbuf)
__THROW
;
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/* Compute MD5 message digest for bytes read from STREAM. The
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resulting message digest number will be written into the 16 bytes
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beginning at RESBLOCK. */
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extern
int
__md5_stream
(FILE *stream,
void
*resblock)
__THROW
;
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/* Compute MD5 message digest for LEN bytes beginning at BUFFER. The
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result is always in little endian byte order, so that a byte-wise
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output yields to the wanted ASCII representation of the message
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digest. */
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extern
void
*
__md5_buffer
(
const
char
*
buffer
,
size_t
len,
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void
*resblock)
__THROW
;
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# ifdef __cplusplus
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}
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# endif
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#endif
/* md5.h */
__md5_stream
#define __md5_stream
Definition:
md5.h:53
__THROW
#define __THROW
Definition:
md5.h:42
md5_ctx::D
uint32_t D
Definition:
md5.h:66
__md5_read_ctx
#define __md5_read_ctx
Definition:
md5.h:52
__md5_process_block
#define __md5_process_block
Definition:
md5.h:50
md5_ctx::A
uint32_t A
Definition:
md5.h:63
__md5_finish_ctx
#define __md5_finish_ctx
Definition:
md5.h:48
md5_ctx::buflen
uint32_t buflen
Definition:
md5.h:69
__md5_process_bytes
#define __md5_process_bytes
Definition:
md5.h:51
__md5_init_ctx
#define __md5_init_ctx
Definition:
md5.h:49
md5_ctx::buffer
uint32_t buffer[32]
Definition:
md5.h:70
md5_ctx::total
uint32_t total[2]
Definition:
md5.h:68
md5_ctx::B
uint32_t B
Definition:
md5.h:64
uint32_t
#define uint32_t
Definition:
stdint.in.h:158
md5_ctx::C
uint32_t C
Definition:
md5.h:65
__md5_buffer
#define __md5_buffer
Definition:
md5.h:47
md5_ctx
Definition:
md5.h:61
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