68270RE: Encryption: Vim should use authenticated encryption mode
- Feb 15, 2013From: Ulrik
> Sent: February-15-13 11:57 AMI did say I'm a novice in this area. :-) The prefix argument is a good
> On 2013-02-15 16:34, MacDonald, Stuart wrote:
> > This isn't supposed to happen. A strong encryption algorithm will
> > render completely different crypt text for even a single bit change in
> > the plaintext, and, a single bit change in the crypt text is supposed
> > to decrypt to corrupt plaintext.
> I think this is your misconception. It can't strictly be true, because
> the uncorrupted prefix of the file will always decrypt ok. To truly
> render the *whole* decryption corrupt when the ciphertext is altered,
> that would require a multi-pass encryption algorithm.
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