PROFESSOR

PETER WILD
Department of Mathematics
Royal Holloway, University of London

February 5th, 2002
Sala Pedro Nunes
Departamento de Matemática

Schedule:
10:30-12:00
14:30-16:00
16:30-18:00

 

PROGRAMME

1. Cipher Systems
An introductory overview of the types and aims of ciphers.
Methods and types of attack.
Information theory.
Statistical tests.

2. Stream Ciphers
The one-time pad.
Pseudo-random keystreams, properties and generation.

3. Block Ciphers
Confusion and diffusion.
Iterated ciphers.
Substitution and permutation networks.
The Feistel principle.
Modes of operation.

4. Public Key Ciphers
Diffie-Hellman key exchange.
One-way functions.
RSA, El Gamal cryptosystems.

5. Authentication/Digital Signature
Challenge/response
MACs.
Identification protocols.
Hash functions.
Signature schemes.

 

 

 
The first gives an
introduction
and then the others
deal with the four
fundamental areas
of cryptography.
The mathematical
background required
is only undergraduate
algebra and some
familiarity with
(simple) probability
and statistics.
 

SUPPORT
Centro de Matemática da Universidade de Coimbra