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  • Posted a comment on ticket #2176 on 7-Zip

    If 7zip is intended to provide "toy" encryption then this bug has a low priority. CBC should use a random unpredictable IV. If we relax that constraint, we may open an attack on the crypto. Or maybe not. The safe thing to do is to make the fix. No doubt there are other compromises in the crypto code. If we minimize our shortcomings, we increase our security assurance.

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cryptosmith
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2019-01-08 22:52:24

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