14th January

Yvo Desmedt, University of Wisonsin at Milwaukee

THRESHOLD CRYPTOSYSTEMS

21st January

Dominic Welsh, Merton College, Oxford

COMPLEXITY QUESTIONS IN CRYPTOGRAPHY

28th January

Jeremy Jacob, St Peter's College, Oxford

DEFINING CONFIDENTIALITY BY REFINEMENT

4th February (postponed until next term)

Artur Ekert, Merton College, Oxford

QUANTUM CRYPTOGRAPHY

11th February

Ross Anderson, Computer Laboratory

COMBINATORIAL AUTHENTICATION

18th February

John Bull, ANSA

OPEN SYSTEM SECURITY

25th February

Mike Roe, Computer Laboratory

COMPUTER SECURITY STANDARDS

4th March

TO BE ANNOUNCED