The following describes the a crypto program I've written. This is an update to WNSTORM which is on csua.berkeley.edu (?) was soda... Mucho improvements have been made. Unfortunately, it will probably be a while before this winds up in a readable directory... so until then you can request it from me, and as long as you're in the USA I'll send you a copy... Here's the blurb... (send requests to rarachel@photon.poly.edy rather than replying to this message if you want me to get to them quicker...) WNSTORM(tm) 2.10 Copyright (C) 1994 by Ray (Arsen) Arachelian All Rights Reserved, GTDR. DO NOT EXPORT!!! USA AND CANADA USE ONLY!!!!!!!!!!!!!!!!!!!!!! WNSTORM (White Nouse Storm) is a new cryptography and steganography software package which I'm developing. You can use WNSTORM to encrypt your files to keep prying eyes from invading your privacy. You can use WNSTORM to hide files, be they text, or otherwise within PCX images (other image formats will be supported in the future.) WNSTORM's method of hiding files in PCX images is very secure. With the right kind of image, you won't even see any changes made to the picture unless you look very very closely, and even then you are unlikely to recognize that there is hidden data in the image. (Some images don't work well, others work very well.) You can then take the PCX image containing the hidden data and send it to your friend, or post it up publicly on the alt.binary.pictures.* or whatever. Only you and anyone you share the password with can get at the hidden data file! More importantly, the intended recipient of the picture does not have to have a previous copy of the image to get at the hidden data. WNSTORM is also an encryption system. Unlike conventional systems, WNSTORM uses random numbers to hide and encrypt your file. (see documentation for technical details.) WNSTORM's encryption uses elements of frequency hopping (also known as spread spectrum transmissions) but instead of using it over radio waves, it uses it on your files. It does this by breaking up your file into eight separate channels and mixing in anywhere between 16 to 240 other bogus random noise channels with your eight data channels. The number of bogus channels varies with each byte taken from your file. The position (similar to a frequency of a channel used by spread spectrum communications) depends on the values in the bogus channels as well as your password. The password can be upto 150 characters (that's 1200 bits) however this can easily be changed to longer passwords. All the source code for WNSTORM and its supporting programs is also included. It's there for you to examine and see that there are no back doors, and to modify so as to improve it. WNSTORM is >FREE<, but not public domain. You may freely use it and give copies away to anyone you like. (see documentation for license information.) Enjoy. -- Ray (Arsen) Arachelian rarachel@photon.poly.edu