NODE feb1abbdCEB 8 - I GUESS I'LL JUST HAVE TO DO IT MYSELF!
"Gary Jeffers" <CCGARY@MIZZOU1.missouri.edu>Tue, 23 Aug 94 18:34:50 PDT
CYPHER_REBELS" ELECTRONIC BOOK (CEB) 8 - I GUESS I'LL JUST HAVE TO DO
IT MYSELF!
Fellow Cyphers - rebel/punks,
I have decided to do the CEB myself. I am going to post it on
Cypherpunks about once a month & on other lists as well. The CEB will
exist as an often updated & posted file. I now need contributions
of text.
I need the WNSTROM steganography program internet source location &
a concise write up of it. I also need the same for PG shell program. I
also need a concise write up of how to use remailers, how to chain
them, etc..
The CEB will be an up to date source to show locations of best
privacy software, essential information, & electronic privacy concerns.
PUSH EM BACK! PUSH EM BACK!
WWWAAAYYY BBBAAACCCK!
BBBEEEAAAATTTT STATE!
NODE 5c9727feRe: CEB 8 - WNSTORM Info
rarachel@prism.poly.edu (Arsen Ray Arachelian)Sun, 28 Aug 94 12:22:58 PDT
WNSTORM is available from:
ftp.wimsey.bc.ca:/pub/crypto/software/dist/US_or_Canada_only_XXXXXXX/Steg
Usual routine to get it. i.e. cd /pub/crypto/software, get the README
file, and if you agree to the terms then follow the instructions.
Short description off the top of my head (I wrote the beastie) Another
info scrap should be in the same directory as WNSTORM.
WNSTORM is a data encryption/steganography utility which is pretty secure for
most uses. Unlike some stego systems WNSTORM is expandible, all you have to
do is write your own LSB injector/extractor for whatever data format you wish
to hide information into.
WNSTORM doesn't require the recipient of the host picture, sound, movie, etc.
to have the original un-stormed picture. Unlike primitive stego programs,
WNSTORM doesn't compare an stormed picture with an unstormed picture.
WNSTORM will cover its tracks statistically. If it changes a 0 bit in the
LSB data stream to a zero, or a 1 bit to a 1, it does nothing. If it changes
a 1 bit to a zero, it will balance itself by changing an unused adjacent 0
bit to a 1. Ditto for a 0->1 transform.
WNSTORM will NOT change every bit of the LSB in order to prevent detection.
It will use a passkey along with a probabilistic algorithm to decide which
bits it will change. The algorithm for picking bits depends on the previous
succesfully encoded/decoded cyphertext AND the passkey.
Internally WNSTORM works by picking "windows" or "packets" of bytes out of
either a random number stream or an LSB stream extracted from a picture,
sound, movie, etc. It then injects eight bits of cyphertext into this window.
Each window is of variable size. The bit locations where the bits are inserted
are randomly exchanged for each pass. The bit values are also randomly
exchanged for each pass.
WNSTORM includes an injector/extractor for PCX images, however I will write
more injecotr/extractor programs for it in the future, and OTHERS can do so
as well.