This paper describes the ideas mentioned a few weeks ago.
Comments are welcome.
Feel free to distribute widely. A paper copy with the 2 figures is in the mail to you. Happy New Year. The Clipper Key Escrow program, introduced by the U.S. Government in 1993, was an attempt to overcome this tension by giving the public good cryptography while retaining for law enforcement the ability to decrypt communications when authorized. But Clipper has many problems that make it unattractive to the public.