This is not unlike the government demanding that you give them a sealed copy of all your future phone conversations and other computer-facilitated communications, just in case they ever want to open and examine them later.
It's even worse than this. It's giving the government a sealed copy of all your *PAST*, present, and future phone conversations and messages... They can always record everything, and then use your key at some later date to recover the messages... -derek PGP 2 key available upon request on the key-server: pgp-public-keys@toxicwaste.mit.edu -- Derek Atkins, MIT '93, Electrical Engineering and Computer Science Secretary, MIT Student Information Processing Board (SIPB) MIT Media Laboratory, Speech Research Group warlord@MIT.EDU PP-ASEL N1NWH