1 // MD5.CC - source code for the C++/object oriented translation and
2 // modification of MD5.
4 // Translation and modification (c) 1995 by Mordechai T. Abzug
6 // This translation/ modification is provided "as is," without express or
7 // implied warranty of any kind.
9 // The translator/ modifier does not claim (1) that MD5 will do what you think
10 // it does; (2) that this translation/ modification is accurate; or (3) that
11 // this software is "merchantible." (Language for this disclaimer partially
12 // copied from the disclaimer below).
16 MD5.H - header file for MD5C.C
17 MDDRIVER.C - test driver for MD2, MD4 and MD5
19 Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
22 License to copy and use this software is granted provided that it
23 is identified as the "RSA Data Security, Inc. MD5 Message-Digest
24 Algorithm" in all material mentioning or referencing this software
27 License is also granted to make and use derivative works provided
28 that such works are identified as "derived from the RSA Data
29 Security, Inc. MD5 Message-Digest Algorithm" in all material
30 mentioning or referencing the derived work.
32 RSA Data Security, Inc. makes no representations concerning either
33 the merchantability of this software or the suitability of this
34 software for any particular purpose. It is provided "as is"
35 without express or implied warranty of any kind.
37 These notices must be retained in any copies of any part of this
38 documentation and/or software.
50 // methods for controlled operation:
51 MD5 (); // simple initializer
52 void update (unsigned char *input, unsigned int input_length);
53 void update (istream& stream);
54 void update (FILE *file);
55 void update (ifstream& stream);
58 // constructors for special circumstances. All these constructors finalize
60 MD5 (unsigned char *string); // digest string, finalize
61 MD5 (istream& stream); // digest stream, finalize
62 MD5 (FILE *file); // digest file, close, finalize
63 MD5 (ifstream& stream); // digest stream, close, finalize
65 // methods to acquire finalized result
66 unsigned char *raw_digest (); // digest as a 16-byte binary array
67 char * hex_digest (); // digest as a 33-byte ascii-hex string
68 friend ostream& operator<< (ostream&, MD5 context);
75 typedef unsigned int uint4; // assumes integer is 4 words long
76 typedef unsigned short int uint2; // assumes short integer is 2 words long
77 typedef unsigned char uint1; // assumes char is 1 word long
79 // next, the private data:
81 uint4 count[2]; // number of *bits*, mod 2^64
82 uint1 buffer[64]; // input buffer
86 // last, the private methods, mostly static:
87 void init (); // called by all constructors
88 void transform (uint1 *buffer); // does the real update work. Note
89 // that length is implied to be 64.
91 static void encode (uint1 *dest, uint4 *src, uint4 length);
92 static void decode (uint4 *dest, uint1 *src, uint4 length);
93 static void memcpy (uint1 *dest, uint1 *src, uint4 length);
94 static void memset (uint1 *start, uint1 val, uint4 length);
96 static inline uint4 rotate_left (uint4 x, uint4 n);
97 static inline uint4 F (uint4 x, uint4 y, uint4 z);
98 static inline uint4 G (uint4 x, uint4 y, uint4 z);
99 static inline uint4 H (uint4 x, uint4 y, uint4 z);
100 static inline uint4 I (uint4 x, uint4 y, uint4 z);
101 static inline void FF (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
103 static inline void GG (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
105 static inline void HH (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
107 static inline void II (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,