A Key Escrow Scheme with Time-Limited Monitoring for One-way Communication
M. Abe · The Computer Journal · 2002
This paper studies several of the properties necessary for public-key-based escrow schemes, and observes that previous schemes lack some important properties. Focusing on the type of communication typified by email, we construct a novel and simple scheme that provides ‘warrant bounds’, ‘admissibility’, ‘surveillance switching’, ‘non-directive monitoring’, ‘off-line agency’ and many other useful properties all at the same time.