69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
#ifndef __MD5_H__
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#define __MD5_H__
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#include <stdio.h>
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#include <fstream>
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#include <iostream>
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using namespace std;
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class MD5 {
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public:
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MD5 (); // simple initializer
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void update (unsigned char *input, unsigned int input_length);
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void update (istream& stream);
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void update (FILE *file);
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void update (ifstream& stream);
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void finalize ();
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MD5 (unsigned char *string); // digest string, finalize
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MD5 (istream& stream); // digest stream, finalize
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MD5 (FILE *file); // digest file, close, finalize
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MD5 (ifstream& stream); // digest stream, close, finalize
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unsigned char *raw_digest (); // digest as a 16-byte binary array
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char * hex_digest (); // digest as a 33-byte ascii-hex string
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friend ostream& operator<< (ostream&, MD5 context);
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private:
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typedef unsigned int uint4; // assumes integer is 4 words long
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typedef unsigned short int uint2; // assumes short integer is 2 words long
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typedef unsigned char uint1; // assumes char is 1 word long
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uint4 state[4];
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uint4 count[2]; // number of *bits*, mod 2^64
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uint1 buffer[64]; // input buffer
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uint1 digest[16];
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uint1 finalized;
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void init (); // called by all constructors
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void transform (uint1 *buffer); // does the real update work. Note
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// that length is implied to be 64.
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static void encode (uint1 *dest, uint4 *src, uint4 length);
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static void decode (uint4 *dest, uint1 *src, uint4 length);
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static void memcpy (uint1 *dest, uint1 *src, uint4 length);
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static void memset (uint1 *start, uint1 val, uint4 length);
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static inline uint4 rotate_left (uint4 x, uint4 n);
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static inline uint4 F (uint4 x, uint4 y, uint4 z);
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static inline uint4 G (uint4 x, uint4 y, uint4 z);
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static inline uint4 H (uint4 x, uint4 y, uint4 z);
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static inline uint4 I (uint4 x, uint4 y, uint4 z);
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static inline void FF (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
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uint4 s, uint4 ac);
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static inline void GG (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
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uint4 s, uint4 ac);
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static inline void HH (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
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uint4 s, uint4 ac);
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static inline void II (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
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uint4 s, uint4 ac);
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};
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#endif
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