openwrtv3/tools/firmware-utils/src/md5.h
Rafał Miłecki cb7ab730c7 firmware-utils: replace md5 code with Alexander Peslyak's implementation
Our current implementation is pretty old and uses some pre-standard/old
ANSI C style that triggers warnings like:
warning: call to function 'MD5_Init' without a real prototype [-Wunprototyped-calls]

This is caused by declarations specified in a following way:
src/md5.h:60:6: note: 'MD5_Init' was declared here
 void MD5_Init ();

Having these warnings makes it harded to notice real problems. We could
try hiding them but it makes more sense to just use a cleaner code.
Another tiny gain from this switch is slightly reduced binary size, on
x86_64 tplink-safeloader's size 48104 became 48003.

The new code is public domain, uses "heavily cut-down BSD license".

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2016-11-28 07:52:31 +01:00

45 lines
1.4 KiB
C

/*
* This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
* MD5 Message-Digest Algorithm (RFC 1321).
*
* Homepage:
* http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
*
* Author:
* Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
*
* This software was written by Alexander Peslyak in 2001. No copyright is
* claimed, and the software is hereby placed in the public domain.
* In case this attempt to disclaim copyright and place the software in the
* public domain is deemed null and void, then the software is
* Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
* general public under the following terms:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted.
*
* There's ABSOLUTELY NO WARRANTY, express or implied.
*
* See md5.c for more information.
*/
#ifdef HAVE_OPENSSL
#include <openssl/md5.h>
#elif !defined(_MD5_H)
#define _MD5_H
/* Any 32-bit or wider unsigned integer data type will do */
typedef unsigned int MD5_u32plus;
typedef struct {
MD5_u32plus lo, hi;
MD5_u32plus a, b, c, d;
unsigned char buffer[64];
MD5_u32plus block[16];
} MD5_CTX;
extern void MD5_Init(MD5_CTX *ctx);
extern void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size);
extern void MD5_Final(unsigned char *result, MD5_CTX *ctx);
#endif