def hash_function(hash_type, object):
    hashed_file = {
        'sha256': hashlib.sha256(object).hexdigest(),
        'sha512': hashlib.sha512(object).hexdigest(),
        'md5': hashlib.md5(object).hexdigest()
    }
    if hash_type.lower() in hashed_file.keys():
        return hashed_file[hash_type.lower()]
    else:
        print('[!]  Wrong or non existing hash type')
        sys.exit(1)