|Pathologically Eclectic Rubbish Lister
Re^4: Compressing and Encrypting files on Windowsby jon_barber (Initiate)
|on Nov 03, 2004 at 04:56 UTC
What on earth makes you think data encrypted with a one time pad contains redundant data repeats and can thus be compressed? Please see Elgons note at Re^2: Compressing and Encrypting files on Windows and follow the link.
What makes you think that a OTP pad doesn't contain redundant repeats? As I understand it, a OTP operates by applying randomly generated data (the OTP) to the data that you wish to encrypt. To decrypt it you then reverse the transformation with the same OTP.
Given that the OTP is randomly generated, is it not possible to imagine that it might produce a cyphertext which did contain redundant data repeats and could therefore be highly compressable?
As I stated in my original comment, it was a nitpick over the definition that "a decent encryption algorithm would produce ... noise."