An example of an MD5 source string in Openmp brute-force speculation

// Gcc-fopenmp-O2-static-s omp_pwd_md5.c md5.c-o omp_pwd_md5.exe
# Include <stdio. h>
# Include "md5.h"
# Include <omp. h>
 
# Define PASSWD_MAXLEN 32
# Define PASSWD_SET_SIZE 36
Const char * passwd_words = "0123456789abcdefghijklmnopqrstuvwxyz _-.,";
Const char * real_pass_digest = "\ x5d \ x41 \ x40 \ x2a \ xbc \ x4b \ x2a \ x76 \ xb9 \ x71 \ x9d \ x91 \ x10 \ x17 \ xc5 \ x92 ";
Int compare_pass (int passwd_len, char * passwd)
{
Int I;
Int match = 0;
Unsigned int * p1, * p2;
P2 = (unsigned int *) real_pass_digest;
// Printf ("Guess Password: % s", passwd );
Md5_state_t MS;
Md5_byte_t digest [16];
Md5_init (& ms );
Md5_append (& ms, passwd, passwd_len );
Md5_finish (& ms, digest );
P1 = (unsigned int *) digest;
For (I = 0; I <4; I ++)
{
If (p1 [I] = p2 [I]) match ++;
}
I = 0;
If (match = 4)
{
I = 1;
Printf ("String: % s -- Matched! ", Passwd );
}
Return I;
}
 
Void passwd_gen ()
{
Int core_nums = omp_get_num_procs ();
Printf ("Core Number: % d \ n", core_nums );
Int I, finded = 0;
Int len = 0, passwd_count = 0;
Int PP [PASSWD_MAXLEN];
Int * passlen = (int *) malloc (sizeof (int) * core_nums );
Char * passwd = (char *) malloc (PASSWD_MAXLEN * core_nums );
For (I = 0; I <PASSWD_MAXLEN; I ++)
{
PP [I] = 0;
Passwd [I] = 0;
}
Int pos = 0;
While (1)
{
PP [pos] ++;
If (PP [pos] = PASSWD_SET_SIZE)
{
PP [pos] = 0; pos ++;
Continue;
}
Else
{
Len = pos> len? Pos: len;
Pos = 0;
For (I = 0; I <len + 1; I ++) passwd [PASSWD_MAXLEN * passwd_count + I] = passwd_words [PP [I];
Passlen [passwd_count] = len + 1;
Passwd_count ++;
If (passwd_count = core_nums)
{
Passwd_count = 0;
# Pragma omp parallel
For (I = 0; I <core_nums; I ++)
{
Finded + = compare_pass (passlen [I], passwd + PASSWD_MAXLEN * I );
}
If (finded) break;
}
}
}
Free (passwd );
Free (passlen );
}
 
Int main (int argc, char * argv [])
{
Passwd_gen ();
}