On Tue, 19 Aug 2003, Eric Rescorla wrote: > "Dave Paris" <[EMAIL PROTECTED]> writes: > > In addition to Owen's salient points about compression working efficiently > > on repetitive strings in plaintext/binary data (e.g. whitespace in a Word > > document) and not on random data (e.g. encrypted data), some encryption > > algorithms can actually be weakened by compressing the resulting data, > > giving a cryptanalyzer clues to the inner workings of the algorithm. > > No reasonable encryption algorithm will be weakened this way.
I agree. I'm guessing what he meant is that some encryption algorithms are weakened if their /input/ is pre-compressed by some known algorithm. If the cleartext is in some known format, it might possibly be easier to recover it from the ciphertext. --Cliff ______________________________________________________________________ Apache Interface to OpenSSL (mod_ssl) www.modssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
