[PYTHON-CRYPTO] things missing from PEP 272

[Zooko]

 Bram Cohen <bram at GAWTH.COM> wrote:
>
> The API for OFB is obvious, but the one for CTR is considerably less so.
> My suggestion is to have the IV be the first block to be encrypted,

Err...  Wouldn't that mean that if you sent a message consisting of BLOCK0 and
BLOCK1, and then you sent a message consisting of BLOCK0 and BLOCK2, that both
messages would be completely readable to a passive eavesdroppper?  :-)

Regards,

Zooko

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