The world of ubiquitous networks brings with it many new problems in securing information within computing systems.
Cryptography is a primary tool for securing computers and networks against adversaries.
Group members are engaged in the study of both theoretical foundations for cryptography as well as applications to real systems. Since the discovery of public key encryption in the 1970s, several different schemes have been proposed that are secure as far as anyone can tell. We still lack conclusive scientific proof that any of the systems in widespread use are secure, and this motivates further work in the search for provably secure and practical cryptosystems. Fundamental research on encryption continues to point the way for securing bytes against adversaries. Members of the group have also invented a public key cryptosystem with the desirable property that breaking it is as hard as breaking the hardest case of the scheme.