The Javascript page at infohiway has posted a javascript implementation of simple encryption for the web. http://www.infohiway.com/javascript/indexf.htm This would be interesting if it had a real crypto algorithm in it like IDEA. ===from their page=== Welcome to the ISN Web Developer's Cut-N-Paste JavaScript, Perl and Plug-ins Toolbox! http://www.infohiway.com/javascript Featuring more than 189 FREE JavaScripts you can simply paste into your HTML! Plus we have some Cut-N-Paste Perl and CSS scattered around the site, too! Cut-N-Paste JavaScript Home / Encryption Scheme This little script is really easy to use. Just paste in your message and you get back your encrypted message... relatively quickly. So long as the recipient has the same JavaScript app as you do, decryption will work. The sample on this page is of a 4-Bit encryption open architecture scheme using only JavaScript. Although designed primarily for encryption of shorty emails, the same notion could be used to protect confidential dealer price lists, etc. on your public pages. Encryption is not just a matter of "jumbling letters". Any amateur cryptographer has a whole lot more tricks than that up his sleeve. First, our little sample programs permit you to use a key letter, a key word or a key phrase of your own devising. What length? You decide. Since the length is unknown, we've created a first problem for anyone attempting to decrypt it. Secondly, they are ultimately recursive. Meaning that you can recursively encrypt encrypted materials as many times as you wish. Only you and the recipient know how many times. Another problem for the "great decryptor". Finally, you can really be sneaky about the key phrases you use. For example, you might agree that the key phrase will be the seventh line on page 13 of Catcher in the Rye. (Seventh month, thirteenth day) Or you might grab the 13th line on a page at a specific URL for this month. Or the lead headline from the ABC News Home Page for today. If you download this little script to your hard drive, even if the boss finds it, it does him/her absolutely no good whatsoever in decrypting your email, because the key phrases are absolutely necessary to the decryption of encrypted messages. === E-mail: amp@pobox.com Date: 12/24/97 Time: 08:50:10 Visit me at http://www.pobox.com/~amp -export-a-crypto-system-sig -RSA-3-lines-PERL #!/bin/perl -sp0777i<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<j]dsj $/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1 lK[d2%Sa2/d0$^Ixp"|dc`;s/\W//g;$_=pack('H*',/((..)*)$/) Have you seen http://www.public-action.com/SkyWriter/WacoMuseum ===