[rollo tomasi]

Yes the plane crash had to do with Enigma and a would be assassination attempt on Churchill. Supposedly the British knew the plane would be targeted from breaking Enigma but they feared if the flight was canceled or diverted (Was a route often taken during that time) the Germans would suspect or realize their machine was compromised..

I believe the details of Enigma were kept top secret on the advice of British Intelligence for 30 years after WWII by some law, not sure though but a WWII buff might know around here what details were kept quiet.

[ccmay]

One of the best tourist destinations in DC is the NSA cryptology museum. You can use an actual Enigma machine to encode and decode messages. For a kid who taught himself to use a Viginère tableau at the age of 8 or 9, it was like a dream for me.