mirror of
https://git.do.srb2.org/STJr/SRB2.git
synced 2024-12-11 21:32:17 +00:00
94 lines
3 KiB
C
94 lines
3 KiB
C
|
/* MD5
|
||
|
|
converted to C++ class by Frank Thilo (thilo@unix-ag.org)
|
||
|
|
for bzflag (http://www.bzflag.org)
|
||
|
|
|
||
|
|
based on:
|
||
|
|
|
||
|
|
md5.h and md5.c
|
||
|
|
reference implementation of RFC 1321
|
||
|
|
|
||
|
|
Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
|
||
|
|
rights reserved.
|
||
|
|
|
||
|
|
License to copy and use this software is granted provided that it
|
||
|
|
is identified as the "RSA Data Security, Inc. MD5 Message-Digest
|
||
|
|
Algorithm" in all material mentioning or referencing this software
|
||
|
|
or this function.
|
||
|
|
|
||
|
|
License is also granted to make and use derivative works provided
|
||
|
|
that such works are identified as "derived from the RSA Data
|
||
|
|
Security, Inc. MD5 Message-Digest Algorithm" in all material
|
||
|
|
mentioning or referencing the derived work.
|
||
|
|
|
||
|
|
RSA Data Security, Inc. makes no representations concerning either
|
||
|
|
the merchantability of this software or the suitability of this
|
||
|
|
software for any particular purpose. It is provided "as is"
|
||
|
|
without express or implied warranty of any kind.
|
||
|
|
|
||
|
|
These notices must be retained in any copies of any part of this
|
||
|
|
documentation and/or software.
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef BZF_MD5_H
|
||
|
|
#define BZF_MD5_H
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
#include <iostream>
|
||
|
|
|
||
|
|
|
||
|
|
// a small class for calculating MD5 hashes of strings or byte arrays
|
||
|
|
// it is not meant to be fast or secure
|
||
|
|
//
|
||
|
|
// usage: 1) feed it blocks of uchars with update()
|
||
|
|
// 2) finalize()
|
||
|
|
// 3) get hexdigest() string
|
||
|
|
// or
|
||
|
|
// MD5(std::string).hexdigest()
|
||
|
|
//
|
||
|
|
// assumes that char is 8 bit and int is 32 bit
|
||
|
|
class MD5
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
typedef unsigned int size_type; // must be 32bit
|
||
|
|
|
||
|
|
MD5();
|
||
|
|
MD5(const std::string& text);
|
||
|
|
void update(const unsigned char *buf, size_type length);
|
||
|
|
void update(const char *buf, size_type length);
|
||
|
|
MD5& finalize();
|
||
|
|
std::string hexdigest() const;
|
||
|
|
friend std::ostream& operator<<(std::ostream&, MD5 md5);
|
||
|
|
|
||
|
|
private:
|
||
|
|
void init();
|
||
|
|
typedef unsigned char uint1; // 8bit
|
||
|
|
typedef unsigned int uint4; // 32bit
|
||
|
|
enum {blocksize = 64}; // VC6 won't eat a const static int here
|
||
|
|
|
||
|
|
void transform(const uint1 block[blocksize]);
|
||
|
|
static void decode(uint4 output[], const uint1 input[], size_type len);
|
||
|
|
static void encode(uint1 output[], const uint4 input[], size_type len);
|
||
|
|
|
||
|
|
bool finalized;
|
||
|
|
uint1 buffer[blocksize]; // bytes that didn't fit in last 64 byte chunk
|
||
|
|
uint4 count[2]; // 64bit counter for number of bits (lo, hi)
|
||
|
|
uint4 state[4]; // digest so far
|
||
|
|
uint1 digest[16]; // the result
|
||
|
|
|
||
|
|
// low level logic operations
|
||
|
|
static inline uint4 F(uint4 x, uint4 y, uint4 z);
|
||
|
|
static inline uint4 G(uint4 x, uint4 y, uint4 z);
|
||
|
|
static inline uint4 H(uint4 x, uint4 y, uint4 z);
|
||
|
|
static inline uint4 I(uint4 x, uint4 y, uint4 z);
|
||
|
|
static inline uint4 rotate_left(uint4 x, int n);
|
||
|
|
static inline void FF(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
|
||
|
|
static inline void GG(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
|
||
|
|
static inline void HH(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
|
||
|
|
static inline void II(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
|
||
|
|
};
|
||
|
|
|
||
|
|
std::string md5(const std::string str);
|
||
|
|
|
||
|
|
#endif
|