/**
* Calculates number of hashes from stdin or from files
*
* Expected input ./gethash [-md5] [-c16] [-c32] [-xor] [-hex] [-f file]
*/
int main( int argc, char *argv[] )
{
unsigned char hash = 0;
FILE *file = stdin;
parse_args(argc, argv, &hash, &file);
unsigned int length;
unsigned char *data = read_file(file, &length);
printf("Length: %i bytes\n", length);
if(hash & XOR){
printf("XOR: ");
if(hash & HEX)
printf("0x%02x\n", xor_compute(data, length));
else
printf("%u\n", xor_compute(data, length));
}
if(hash & C16){
printf("CRC-16: ");
if(hash & HEX)
printf("0x%04x\n", crc16_compute(data, length));
else
printf("%u\n", crc16_compute(data, length));
}
if(hash & C32){
printf("CRC-32: ");
if(hash & HEX)
printf("0x%08x\n", crc32_compute(data, length));
else
printf("%u\n", crc32_compute(data, length));
}
if(hash & MD5){
unsigned char result[16];
md5_compute(data, length, result);
printf("MD5: ");
for (int i = 0; i < 16; i++){
printf("%02x", result[i]);
}
printf("\n");
}
free(data);
fclose(file);
return 0;
}
uint8 xor_compare(uint8 *buff) {
uint8 xor = xor_compute(buff);
if (xor == buff[buff[0] - 1])
return 0x01;
else
return 0x00;
}