from RC5 import RC5
import md5

old = md5.md5sum("he")
young = md5.md5sum(old)
key = bytes.fromhex(old) + bytes.fromhex(young)
print(key)
testRC5 = RC5(64, 16, key)

s = "hello"

print(testRC5.encryptBytes(s.encode('utf-8')))
print(testRC5.decryptBytes(testRC5.encryptBytes(s.encode('utf-8'))).decode('utf-8') )