University of Virginia, Department of Computer Science
CS551: Security and Privacy on the Internet, Fall 2000

Manifest: Monday 16 October 2000

Assignments Due
18 OctoberMidterm

(Think about this with your neighbors. Now.)

The CIA would like to send instructions to a spy stationed in Outer Mongolia. The spy is staying at a hotel with a public fax machine, but otherwise can use no powered equipment without causing suspicion.

How can the CIA send instructions to the spy with perfect secrecy?

The spy may not have any suspicious spy-like materials (e.g., a code book), but may have a box of (random-looking) printed transparencies.



CS 655 University of Virginia
Department of Computer Science
CS 551: Security and Privacy on the Internet
David Evans