History and future of cryptography

Mr Motohisa Fukuda (Department of Pure Mathematics and Mathematical Statistics)

Saturday, 29 October, 2005; 7:30-9:30pm

Seminar room, No1. Newnham Terrace, Darwin College

Cryptography has been playing a key role especially in wars throughout human history. A famous example is Enigma in the World War II.
Apart from the military use, the information revolution caused by the recent development of computer science has yielded higher and higher demand for the commercial use of cryptography. At the next seminar, I would like to introduce some kinds of cryptography that have been used in the past up to the present, and also mention a new kind of cryptography, namely " quantum cryptography", which will be put into practice within a few years' time. Using these examples, I am going to explain not only the algorithm of cryptography, but also the qualitative differences between them.