*/
void permutekey(uint8_t key[8], uint8_t dest[8])
{
-
int i;
for(i = 0 ; i < 8 ; i++)
{
(((key[1] & (0x80 >> i)) >> (7-i)) << 1) |
(((key[0] & (0x80 >> i)) >> (7-i)) << 0);
}
-
return;
}
/**
//Diversify
diversifyKey(item.csn, key_sel_p, div_key);
//Calc mac
- doMAC(item.cc_nr,12, div_key,calculated_MAC);
+ doMAC(item.cc_nr, div_key,calculated_MAC);
if(memcmp(calculated_MAC, item.mac, 4) == 0)
{
errors += bruteforceItem(*attack, keytable);
}
free(attack);
- clock_t t2 = clock();
- float diff = (((float)t2 - (float)t1) / CLOCKS_PER_SEC );
+ t1 = clock() - t1;
+ float diff = ((float)t1 / CLOCKS_PER_SEC );
prnlog("\nPerformed full crack in %f seconds",diff);
// Pick out the first 16 bytes of the keytable.
*/
int bruteforceFile(const char *filename, uint16_t keytable[])
{
-
FILE *f = fopen(filename, "rb");
if(!f) {
prnlog("Failed to read from file '%s'", filename);
long fsize = ftell(f);
fseek(f, 0, SEEK_SET);
+ if (fsize < 0) {
+ prnlog("Error, when getting filesize");
+ if (f) {
+ fclose(f);
+ f = NULL;
+ }
+ return 1;
+ }
+
uint8_t *dump = malloc(fsize);
size_t bytes_read = fread(dump, 1, fsize, f);
- fclose(f);
- if (bytes_read < fsize)
- {
+ if (f) {
+ fclose(f);
+ f = NULL;
+ }
+ if (bytes_read < fsize) {
prnlog("Error, could only read %d bytes (should be %d)",bytes_read, fsize );
}
- return bruteforceDump(dump,fsize,keytable);
+ uint8_t res = bruteforceDump(dump,fsize,keytable);
+ free(dump);
+ return res;
}
/**
*