| /* Declaration of functions and data types used for MD5 sum computing |
| library functions. |
| Copyright (C) 1995-1997,1999-2005 Free Software Foundation, Inc. |
| |
| NOTE: The canonical source of this file is maintained with the GNU C |
| Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu. |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2, or (at your option) any |
| later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software Foundation, |
| Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| #ifndef _MD5_H |
| #define _MD5_H 1 |
| |
| #include <stdio.h> |
| |
| #if HAVE_INTTYPES_H |
| # include <inttypes.h> |
| #endif |
| #if HAVE_STDINT_H || _LIBC || defined __UCLIBC__ |
| # include <stdint.h> |
| #endif |
| |
| #ifndef __GNUC_PREREQ |
| # if defined __GNUC__ && defined __GNUC_MINOR__ |
| # define __GNUC_PREREQ(maj, min) \ |
| ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) |
| # else |
| # define __GNUC_PREREQ(maj, min) 0 |
| # endif |
| #endif |
| |
| #ifndef __THROW |
| # if defined __cplusplus && __GNUC_PREREQ (2,8) |
| # define __THROW throw () |
| # else |
| # define __THROW |
| # endif |
| #endif |
| |
| #ifndef __attribute__ |
| # if ! __GNUC_PREREQ (2,8) || __STRICT_ANSI__ |
| # define __attribute__(x) |
| # endif |
| #endif |
| |
| #ifndef _LIBC |
| # define __md5_buffer md5_buffer |
| # define __md5_finish_ctx md5_finish_ctx |
| # define __md5_init_ctx md5_init_ctx |
| # define __md5_process_block md5_process_block |
| # define __md5_process_bytes md5_process_bytes |
| # define __md5_read_ctx md5_read_ctx |
| # define __md5_stream md5_stream |
| #endif |
| |
| typedef uint32_t md5_uint32; |
| |
| /* Structure to save state of computation between the single steps. */ |
| struct md5_ctx |
| { |
| md5_uint32 A; |
| md5_uint32 B; |
| md5_uint32 C; |
| md5_uint32 D; |
| |
| md5_uint32 total[2]; |
| md5_uint32 buflen; |
| char buffer[128] __attribute__ ((__aligned__ (__alignof__ (md5_uint32)))); |
| }; |
| |
| /* |
| * The following three functions are build up the low level used in |
| * the functions `md5_stream' and `md5_buffer'. |
| */ |
| |
| /* Initialize structure containing state of computation. |
| (RFC 1321, 3.3: Step 3) */ |
| extern void __md5_init_ctx (struct md5_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 necessary that LEN is a multiple of 64!!! */ |
| extern void __md5_process_block (const void *buffer, size_t len, |
| struct md5_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 64. */ |
| extern void __md5_process_bytes (const void *buffer, size_t len, |
| struct md5_ctx *ctx) __THROW; |
| |
| /* Process the remaining bytes in the buffer and put result from CTX |
| in first 16 bytes following RESBUF. The result is always in little |
| endian byte order, so that a byte-wise output yields to the wanted |
| ASCII representation of the message digest. |
| |
| IMPORTANT: On some systems it is required that RESBUF be correctly |
| aligned for a 32 bits value. */ |
| extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *resbuf) __THROW; |
| |
| |
| /* Put result from CTX in first 16 bytes following RESBUF. The result is |
| always in little endian byte order, so that a byte-wise output yields |
| to the wanted ASCII representation of the message digest. |
| |
| IMPORTANT: On some systems it is required that RESBUF is correctly |
| aligned for a 32 bits value. */ |
| extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *resbuf) __THROW; |
| |
| |
| /* Compute MD5 message digest for bytes read from STREAM. The |
| resulting message digest number will be written into the 16 bytes |
| beginning at RESBLOCK. */ |
| extern int __md5_stream (FILE *stream, void *resblock) __THROW; |
| |
| /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The |
| result is always in little endian byte order, so that a byte-wise |
| output yields to the wanted ASCII representation of the message |
| digest. */ |
| extern void *__md5_buffer (const char *buffer, size_t len, |
| void *resblock) __THROW; |
| |
| #endif /* md5.h */ |