I was searching to see if anyone had done a Zeroize interface for Java and found a very interesting page http://www.maritime.org/ecm2.htm on the US military's primary cipher machine from World War II, the ECM Mark II, aka CSP-989 aka SIGABA. (It turns out the term "zeroize" goes back to the electromechanical era and they have a Java version of the ECM-II.) This page is unusual for the depth of supporting material it includes, wheel coding lists for the M-94 "Jefferson Wheel" cipher, detailed emergency procedures to use when your ECM-II has been compromised, explanations of NSA nomenclature system for cryptographic equipment, etc. Worth a visit. Arnold Reinhold
