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consistent pcp/pbp formats

On Wed, Feb 05, 2014 at 01:03:00AM +0400, Yuriy Kaminskiy wrote:
> If attacker knows/expect content of message, he can discover (and prove) message
> authorship.
> This is not most likely scenario, but still totally not good. Signature should
> be encrypted too.

Well, I can change that, no problem.
> With pbp encryption scheme, each 32kb block is encrypted with stream cipher with
> *explicit random nonce*. Unlike ECB, if you encrypt same blocks on same key,
> you'll have *different* ciphertext (as they used different nonces). None of
> above ECB problems apply.

Which is the very same I do in pcp. It was just a question, i.e. "may
cbc provide even more security than ecb+nonces?"

- Tom

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