/*
????? file: md5.h
????? desc: md5 class, to gengerate MD5 for a buffer or string
????? author: chen hua
????? create: 2005-03-16
*/

#ifndef _MD5_H
#define _MD5_H

#pragma warning(disable:4786)

#include <string>
using namespace std;

struct MD5_DATA
{
?unsigned long data[4];
?bool operator < (const MD5_DATA& p) const
?{
? return memcmp(data,p.data,4*sizeof(long))>0;
?}
};

class CMD5
{
private:
?#define uint8? unsigned char
?#define uint32 unsigned long int

?struct md5_context
?{
? uint32 total[2];
? uint32 state[4];
? uint8 buffer[64];
?};

?void md5_starts( struct md5_context *ctx );
?void md5_process( struct md5_context *ctx, uint8 data[64] );
?void md5_update( struct md5_context *ctx, uint8 *input, size_t length );
?void md5_finish( struct md5_context *ctx, uint8 digest[16] );

public:
?//! construct a CMD5 from any buffer
?void GenerateMD5(unsigned char* buffer,size_t bufferlen);

?//! construct a CMD5
?CMD5();

?//! construct a md5src from char *
?CMD5(const char * md5src);

?//! construct a CMD5 from a 16 bytes md5
?CMD5(unsigned long* md5src);

?//! add a other md5
?CMD5 operator +(CMD5 adder);

?//! just if equal
?bool operator ==(CMD5 cmper);

?//! give the value from equer
?// void operator =(CMD5 equer);

?//! to a string
?string ToString();

?unsigned long m_data[4];
};
#endif /* md5.h */

?

?

?

/*
?* RFC 1321 compliant MD5 implementation,
?* by Christophe Devine <devine@cr0.net>;
?* this program is licensed under the GPL.
?*/
#include "stdafx.h"
#include "md5.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define GET_UINT32(n,b,i)?????????????????????????????????????? \
{?????????????????????????????????????????????????????????????? \
??? (n) = (uint32) ((uint8 *) b)[(i)]?????????????????????????? \
????? | (((uint32) ((uint8 *) b)[(i)+1]) <<? 8)???????????????? \
????? | (((uint32) ((uint8 *) b)[(i)+2]) << 16)???????????????? \
????? | (((uint32) ((uint8 *) b)[(i)+3]) << 24);??????????????? \
}

#define PUT_UINT32(n,b,i)?????????????????????????????????????? \
{?????????????????????????????????????????????????????????????? \
??? (((uint8 *) b)[(i)]? ) = (uint8) (((n)????? ) & 0xFF);????? \
??? (((uint8 *) b)[(i)+1]) = (uint8) (((n) >>? 8) & 0xFF);????? \
??? (((uint8 *) b)[(i)+2]) = (uint8) (((n) >> 16) & 0xFF);????? \
??? (((uint8 *) b)[(i)+3]) = (uint8) (((n) >> 24) & 0xFF);????? \
}

void CMD5::md5_starts( struct md5_context *ctx )
{
??? ctx->total[0] = 0;
??? ctx->total[1] = 0;
??? ctx->state[0] = 0x67452301;
??? ctx->state[1] = 0xEFCDAB89;
??? ctx->state[2] = 0x98BADCFE;
??? ctx->state[3] = 0x10325476;
}

void CMD5::md5_process( struct md5_context *ctx, uint8 data[64] )
{
??? uint32 A, B, C, D, X[16];

??? GET_UINT32( X[0],? data,? 0 );
??? GET_UINT32( X[1],? data,? 4 );
??? GET_UINT32( X[2],? data,? 8 );
??? GET_UINT32( X[3],? data, 12 );
??? GET_UINT32( X[4],? data, 16 );
??? GET_UINT32( X[5],? data, 20 );
??? GET_UINT32( X[6],? data, 24 );
??? GET_UINT32( X[7],? data, 28 );
??? GET_UINT32( X[8],? data, 32 );
??? GET_UINT32( X[9],? data, 36 );
??? GET_UINT32( X[10], data, 40 );
??? GET_UINT32( X[11], data, 44 );
??? GET_UINT32( X[12], data, 48 );
??? GET_UINT32( X[13], data, 52 );
??? GET_UINT32( X[14], data, 56 );
??? GET_UINT32( X[15], data, 60 );

#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))

#define P(a,b,c,d,k,s,t)??????????????????????????????? \
{?????????????????????????????????????????????????????? \
??? a += F(b,c,d) + X[k] + t; a = S(a,s) + b;?????????? \
}

??? A = ctx->state[0];
??? B = ctx->state[1];
??? C = ctx->state[2];
??? D = ctx->state[3];

#define F(x,y,z) (z ^ (x & (y ^ z)))

??? P( A, B, C, D,? 0,? 7, 0xD76AA478 );
??? P( D, A, B, C,? 1, 12, 0xE8C7B756 );
??? P( C, D, A, B,? 2, 17, 0x242070DB );
??? P( B, C, D, A,? 3, 22, 0xC1BDCEEE );
??? P( A, B, C, D,? 4,? 7, 0xF57C0FAF );
??? P( D, A, B, C,? 5, 12, 0x4787C62A );
??? P( C, D, A, B,? 6, 17, 0xA8304613 );
??? P( B, C, D, A,? 7, 22, 0xFD469501 );
??? P( A, B, C, D,? 8,? 7, 0x698098D8 );
??? P( D, A, B, C,? 9, 12, 0x8B44F7AF );
??? P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
??? P( B, C, D, A, 11, 22, 0x895CD7BE );
??? P( A, B, C, D, 12,? 7, 0x6B901122 );
??? P( D, A, B, C, 13, 12, 0xFD987193 );
??? P( C, D, A, B, 14, 17, 0xA679438E );
??? P( B, C, D, A, 15, 22, 0x49B40821 );

#undef F

#define F(x,y,z) (y ^ (z & (x ^ y)))

??? P( A, B, C, D,? 1,? 5, 0xF61E2562 );
??? P( D, A, B, C,? 6,? 9, 0xC040B340 );
??? P( C, D, A, B, 11, 14, 0x265E5A51 );
??? P( B, C, D, A,? 0, 20, 0xE9B6C7AA );
??? P( A, B, C, D,? 5,? 5, 0xD62F105D );
??? P( D, A, B, C, 10,? 9, 0x02441453 );
??? P( C, D, A, B, 15, 14, 0xD8A1E681 );
??? P( B, C, D, A,? 4, 20, 0xE7D3FBC8 );
??? P( A, B, C, D,? 9,? 5, 0x21E1CDE6 );
??? P( D, A, B, C, 14,? 9, 0xC33707D6 );
??? P( C, D, A, B,? 3, 14, 0xF4D50D87 );
??? P( B, C, D, A,? 8, 20, 0x455A14ED );
??? P( A, B, C, D, 13,? 5, 0xA9E3E905 );
??? P( D, A, B, C,? 2,? 9, 0xFCEFA3F8 );
??? P( C, D, A, B,? 7, 14, 0x676F02D9 );
??? P( B, C, D, A, 12, 20, 0x8D2A4C8A );

#undef F
???
#define F(x,y,z) (x ^ y ^ z)

??? P( A, B, C, D,? 5,? 4, 0xFFFA3942 );
??? P( D, A, B, C,? 8, 11, 0x8771F681 );
??? P( C, D, A, B, 11, 16, 0x6D9D6122 );
??? P( B, C, D, A, 14, 23, 0xFDE5380C );
??? P( A, B, C, D,? 1,? 4, 0xA4BEEA44 );
??? P( D, A, B, C,? 4, 11, 0x4BDECFA9 );
??? P( C, D, A, B,? 7, 16, 0xF6BB4B60 );
??? P( B, C, D, A, 10, 23, 0xBEBFBC70 );
??? P( A, B, C, D, 13,? 4, 0x289B7EC6 );
??? P( D, A, B, C,? 0, 11, 0xEAA127FA );
??? P( C, D, A, B,? 3, 16, 0xD4EF3085 );
??? P( B, C, D, A,? 6, 23, 0x04881D05 );
??? P( A, B, C, D,? 9,? 4, 0xD9D4D039 );
??? P( D, A, B, C, 12, 11, 0xE6DB99E5 );
??? P( C, D, A, B, 15, 16, 0x1FA27CF8 );
??? P( B, C, D, A,? 2, 23, 0xC4AC5665 );

#undef F

#define F(x,y,z) (y ^ (x | ~z))

??? P( A, B, C, D,? 0,? 6, 0xF4292244 );
??? P( D, A, B, C,? 7, 10, 0x432AFF97 );
??? P( C, D, A, B, 14, 15, 0xAB9423A7 );
??? P( B, C, D, A,? 5, 21, 0xFC93A039 );
??? P( A, B, C, D, 12,? 6, 0x655B59C3 );
??? P( D, A, B, C,? 3, 10, 0x8F0CCC92 );
??? P( C, D, A, B, 10, 15, 0xFFEFF47D );
??? P( B, C, D, A,? 1, 21, 0x85845DD1 );
??? P( A, B, C, D,? 8,? 6, 0x6FA87E4F );
??? P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
??? P( C, D, A, B,? 6, 15, 0xA3014314 );
??? P( B, C, D, A, 13, 21, 0x4E0811A1 );
??? P( A, B, C, D,? 4,? 6, 0xF7537E82 );
??? P( D, A, B, C, 11, 10, 0xBD3AF235 );
??? P( C, D, A, B,? 2, 15, 0x2AD7D2BB );
??? P( B, C, D, A,? 9, 21, 0xEB86D391 );

#undef F

??? ctx->state[0] += A;
??? ctx->state[1] += B;
??? ctx->state[2] += C;
??? ctx->state[3] += D;
}

void CMD5::md5_update( struct md5_context *ctx, uint8 *input, size_t length )
{
??? uint32 left, fill;

??? if( ! length ) return;

??? left = ( ctx->total[0] >> 3 ) & 0x3F;
??? fill = 64 - left;

??? ctx->total[0] += length <<? 3;
??? ctx->total[1] += length >> 29;

??? ctx->total[0] &= 0xFFFFFFFF;
??? ctx->total[1] += ctx->total[0] < length << 3;

??? if( left && length >= fill )
??? {
??????? memcpy( (void *) (ctx->buffer + left), (void *) input, fill );
??????? md5_process( ctx, ctx->buffer );
??????? length -= fill;
??????? input? += fill;
??????? left = 0;
??? }

??? while( length >= 64 )
??? {
??????? md5_process( ctx, input );
??????? length -= 64;
??????? input? += 64;
??? }

??? if( length )
??? {
??????? memcpy( (void *) (ctx->buffer + left), (void *) input, length );
??? }
}

static uint8 md5_padding[64] =
{
?0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
??? 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
??? 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
??? 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

void CMD5::md5_finish( struct md5_context *ctx, uint8 digest[16] )
{
??? uint32 last, padn;
??? uint8 msglen[8];

??? PUT_UINT32( ctx->total[0], msglen, 0 );
??? PUT_UINT32( ctx->total[1], msglen, 4 );

??? last = ( ctx->total[0] >> 3 ) & 0x3F;
??? padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );

??? md5_update( ctx, md5_padding, padn );
??? md5_update( ctx, msglen, 8 );

??? PUT_UINT32( ctx->state[0], digest,? 0 );
??? PUT_UINT32( ctx->state[1], digest,? 4 );
??? PUT_UINT32( ctx->state[2], digest,? 8 );
??? PUT_UINT32( ctx->state[3], digest, 12 );
}

void CMD5::GenerateMD5(unsigned char* buffer,size_t bufferlen)
{
?struct md5_context context;
?md5_starts (&context);
?md5_update (&context, buffer, bufferlen);
?md5_finish (&context,(unsigned char*)m_data);
}

CMD5::CMD5()
{
?for(int i=0;i<4;i++)
? m_data[i]=0;
}

CMD5::CMD5(unsigned long* md5src)
{
?memcpy(m_data,md5src,16);
}
int _httoi(const char *value)
{
? struct CHexMap
? {
??? char chr;
??? int value;
? };
? const int HexMapL = 16;
? CHexMap HexMap[HexMapL] =
? {
??? {'0', 0}, {'1', 1},
??? {'2', 2}, {'3', 3},
??? {'4', 4}, {'5', 5},
??? {'6', 6}, {'7', 7},
??? {'8', 8}, {'9', 9},
??? {'a', 10}, {'b', 11},
??? {'c', 12}, {'d', 13},
??? {'e', 14}, {'f', 15}
? };
? char *mstr = strdup(value);
? char *s = mstr;
? int result = 0;
? if (*s == '0' && *(s + 1) == 'X') s += 2;
? bool firsttime = true;
? while (*s != '\0')
? {
??? bool found = false;
??? for (int i = 0; i < HexMapL; i++)
??? {
????? if (*s == HexMap[i].chr)
????? {
??????? if (!firsttime) result <<= 4;
??????? result |= HexMap[i].value;
??????? found = true;
??????? break;
????? }
??? }
??? if (!found) break;
??? s++;
??? firsttime = false;
? }
? free(mstr);
? return result;
}

CMD5::CMD5(const char* md5src)
{
?if (strcmp(md5src,"")==0)
?{
? for(int i=0;i<4;i++)
?? m_data[i]=0;
? return;
?}
?for(int j = 0; j < 16; j++ )
??? {
? char buf[10];
? strncpy(buf,md5src,2);
? md5src+=2;
??????? ((unsigned char*)m_data)[j] = _httoi(buf);
??? }
}

CMD5 CMD5::operator +(CMD5 adder)
{
?unsigned long m_newdata[4];
?for(int i=0;i<4;i++)
? m_newdata[i]=m_data[i]^(adder.m_data[i]);
?return CMD5(m_newdata);
}

bool CMD5::operator ==(CMD5 cmper)
{
?return (memcmp(cmper.m_data ,m_data,16)==0);
}

//void CMD5::operator =(CMD5 equer)
//{
// memcpy(m_data,equer.m_data ,16);
//}

string CMD5::ToString()
{
??? char output[33];
??? for(int j = 0; j < 16; j++ )
??? {
??????? sprintf( output + j * 2, "%02x", ((unsigned char*)m_data)[j]);
??? }
??? return string(output);
}