Re: Plaintext

Nelson Minar (nelson@media.mit.edu)
Wed, 2 Jul 1997 18:08:47 -0400


>In most real world applications, you'll have at least some
>information about what's inside, whether it's time-stamps, or
>headers, on a Word document, or whatever.

This is basic canon for cryptanalysis, but I'm not sure I believe it.
PGP, for instance, does its best to compress the data up to maximum
entropy to prevent analysis on the plaintext. What do you do in that
circumstance?