def combine_zpk_clear_components(component1, component2):
    combined_key_bytes = bytearray(len(component1))
    for i in range(len(combined_key_bytes)):
        combined_key_bytes[i] = component1[i] ^ component2[i]
    return combined_key_bytes

def hex_string_to_byte_array(hex_string):
    length = len(hex_string)
    byte_array = bytearray(length // 2)
    for i in range(0, length, 2):
        byte_array[i // 2] = int(hex_string[i:i + 2], 16)
    return byte_array

def byte_array_to_hex_string(byte_array):
    hex_string = ""
    for b in byte_array:
        hex_string += format(b, '02X')
    return hex_string

def main():
    zpk_component1 = "XXX"
    zpk_component2 = "YYY"
    try:
        zpk_component1_bytes = hex_string_to_byte_array(zpk_component1)
        zpk_component2_bytes = hex_string_to_byte_array(zpk_component2)
        combined_bytes = combine_zpk_clear_components(zpk_component1_bytes, zpk_component2_bytes)
        combined_zpk = byte_array_to_hex_string(combined_bytes)
        print("Combined ZPK:", combined_zpk)
    except Exception as e:
        print("Error:", e)

if __name__ == "__main__":
    main()