Should reject Unicode strings in Python 3.x

[Craig McQueen]

The docs in PyPI give an example:

>>> from Crypto.Cipher import AES
>>> obj = AES.new('This is a key456', AES.MODE_ECB)
>>> message = "The answer is no"
>>> ciphertext = obj.encrypt(message)
>>> ciphertext
'o\x1aq_{P+\xd0\x07\xce\x89\xd1=M\x989'

In Python 3.x, the encrypt function shouldn't accept the Unicode string input. It should only accept a byte string input. I.e. it should only work if we change the third line to:

>>> message = b"The answer is no"

[Darsey Litzenberger (dlitz)]

Agreed. PyCrypto should behave like a Python 3 user would expect when running under Python 3.

[Craig McQueen (cmcqueen1975)]

It should only accept a byte string, not Unicode, for the encryption key as well --

    obj = AES.new(b'This is a key456', AES.MODE_ECB)