#!/usr/bin/python2

key = pyState.String(13)
flag = pyState.String(21) # Calculated length

assert len(key) == 13

#assert max([ord(char) for char in key]) < 128

for char in key:
    assert ord(char) < 128

#assert max([ord(char) for char in flag]) < 128
for char in flag:
    assert ord(char) < 128

message = flag + "|" + key

encrypted = chr(random.randint(0, 128))

for i in range(0, len(message)):
  encrypted += chr((ord(message[i]) + ord(key[i % len(key)]) + ord(encrypted[i])) % 128)

#print(encrypted.encode('hex'))