... someone had left thier keys in the door lock. So being the good cypherpunk that I am I jumped out and grabbed the keys from the lock, then knocked on the window. The passenger rolled down the window and accepted the keys back. Much to my surprise the passenger was none other than Whitfield Diffie.

Let me get this straight. You performed a key exchange with Whitfield Diffie? His keys were publicly available, and you securely transferred them back again? What a concept! Rick F. Hoselton (who doesn't claim to present opinions for others)