一个C++实现的md5源码
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使用代码
- string c,key;
- cin >> c;
- if( c == "c" ) return(0);
- CMD5 iMD5;
- iMD5.GenerateMD5( (unsigned char*)c.c_str(), c.size() );
- key = iMD5.ToString();
Md5.h
- #ifndef _MD5_H
- #define _MD5_H
- //#pragma warning(disable:4786)
- #include <string>
- using namespace std;
- /*!
- * Manage MD5.
- */
- 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, uint32 length );
- void md5_finish( struct md5_context *ctx, uint8 digest[16] );
- public:
- //! construct a CMD5 from any buffer
- void GenerateMD5(unsigned char* buffer,int 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 */
Md5.cpp
- /*
- * RFC 1321 compliant MD5 implementation,
- * by Christophe Devine <devine@cr0.net>;
- * this program is licensed under the GPL.
- */
- #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); /
- }
- //extern pthread_mutex_t mutexMemory;
- 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, uint32 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,int 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}
- };
- //pthread_mutex_lock(&mutexMemory);
- char *mstr = strdup(value);
- //pthread_mutex_unlock(&mutexMemory);
- 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;
- }
- //pthread_mutex_lock(&mutexMemory);
- free(mstr);
- //pthread_mutex_unlock(&mutexMemory);
- 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);
- }
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