
PROFESSOR
PETER
WILD
Department of Mathematics
Royal Holloway, University of London
February
5th, 2002
Sala Pedro Nunes
Departamento de Matemática
Schedule:
10:3012:00
14:3016:00
16:3018:00

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
onetime pad.
Pseudorandom 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
DiffieHellman
key exchange.
Oneway functions.
RSA, El Gamal cryptosystems.
5. Authentication/Digital
Signature
Challenge/response
MACs.
Identification protocols.
Hash functions.
Signature schemes.

