## TATRACRYPT 2007

The 7^{th} Central European Conference on Cryptology

June 22-24, 2007, Smolenice, Slovakia

# Abstract of a plenary talk

# Public Key Cryptography Based on Covers of Finite Groups

## Trung van Tran

Institute for Experimental Mathematics

Universität Duisburg-Essen

Ellernstrasse 29, 45326 Essen

Germany

trung@iem.uni-due.de

Logarithmic signatures for finite permutation groups were first used by
S. Magliveras in the 80’s to build the symmetric key cryptosystem PGM.
Recently the concept of covers for finite groups has been introduced, which
can be viewed as a generalization of that of logarithmic signatures. It turns
out that covers for finite groups are very useful objects that allows us to
construct public key primitives. The talk gives an overview of the current
new approaches in this direction.

Last updated on February 12, 2007.