A bunch of us cryptographers would really like to attack RPK, but the documents on the website are slippery enough to make it difficult. There is enough unspecified for them to sneak away from any analysis. If someone were to reverse engineer the RPK cryptosystem from this product, I would really appreciate it. Bruce ********************************************************************** Bruce Schneier, President, Counterpane Systems Phone: 612-823-1098 101 E Minnehaha Parkway, Minneapolis,MN 55419 Fax: 612-823-1590 http://www.counterpane.com