from salsa20 import XSalsa20_xor
from os import urandom

IV = urandom(24)
KEY = b'*sekret**sekret**sekret**sekret*'
ciphertext = XSalsa20_xor(b"TO ZOLTA LODZ PODWODNA", IV, KEY)
print(XSalsa20_xor(ciphertext, IV, KEY).decode())