[pycrypto] Typo or bug?

[Legrandin]

> > Up to pycrypto 2.5, when no iv was provided to new() a string of zeroes
> was
> > automatically used.
> > Depending on your application, that may or may not be a problem. It is
> wiser
> > to always make iv explicit.
>
> Which explains why my 'old' code failed. Thanks.
> Needing both key and iv... It sounds like asking for two keys to unlock a
> box?
> Is that the idea?
>

Well, an important difference is that the IV is not a secret, so it's not
really a key,
just a way to randomize the key stream.
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