gistfile1.txt

unsigned char* intToHex(int n, unsigned char* bytes){
    int size = sizeof(bytes);
    for(int i=0; i<size+1; i++){
        size--;
        bytes[i] = ( n >> (size * 8)) & 0xFF;
    }
    bytes[sizeof(bytes)-1] = n & 0xFF; // last
    return bytes;
}