const char *text = "hello world";
CMD5 iMD5;
iMD5.GenerateMD5(text, strlen(text) );
const char*result = iMD5.ToString();
下面是MD5加密的文件类的实现:
Md5.cpp
/*
* RFC 1321 compliant MD5 implementation,
* by Christophe Devine ;
* this program is licensed under the GPL.
*/
#include "Md5.h"
#include
#include
#include <string.h>
#defineGET_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); \
}
#definePUT_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 MD5::md5_starts( structmd5_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 MD5::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);
#defineS(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#defineP(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];
#defineF(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);
#undefF
#defineF(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);
#undefF
#defineF(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);
#undefF
#defineF(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);
#undefF
ctx->state[0] += A;
ctx->state[1] += B;
ctx->state[2] += C;
ctx->state[3] += D;
}
void MD5::md5_update( structmd5_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 MD5::GenerateMD5(unsigned char* buffer,intbufferlen)
{
structmd5_context context;
md5_starts (&context);
md5_update (&context, buffer, bufferlen);
md5_finish (&context,(unsignedchar*)m_data);
}
MD5::MD5()
{
for(int i=0;i<4;i++)
m_data[i]=0;
}
MD5::MD5(unsigned long* md5src)
{
memcpy(m_data,md5src,16);
}int _httoi(const char*value)
{
structCHexMap
{
charchr;
intvalue;
};
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);
returnresult;
}
MD5::MD5(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;
((unsignedchar*)m_data)[j] = _httoi(buf);
}
}
MD5 MD5::operator+(CMD5 adder)
{
unsignedlong m_newdata[4];
for(int i=0;i<4;i++)
m_newdata[i]=m_data[i]^(adder.m_data[i]);
returnMD5(m_newdata);
}
bool MD5::operator==(MD5 cmper)
{
return (memcmp(cmper.m_data ,m_data,16)==0);
}
//void MD5::operator =(MD5 equer)//{// memcpy(m_data,equer.m_data ,16);//}
stringMD5::ToString()
{
char output[33];
for(int j = 0; j < 16; j++ )
{
sprintf( output + j *2, "%02x", ((unsigned char*)m_data)[j]);
}
return string(output);
}
