import base64
import getpass
import hashlib

domain = input('Domain: ').strip().lower()
universal_password = getpass.getpass('Universal password: ')

bits = (domain + '/' + universal_password).encode()
for i in range(2 ** 16):
    bits = hashlib.sha256(bits).digest()
generated_password = base64.b64encode(bits).decode()[:16]

print('Domain-specific password: ' + generated_password)