In PODC 2003, Park, Chong, Siegel and Ray [22] proposed an optimistic protocol for fair exchange, based on RSA signatures. We show that their protocol is totally breakable already...
The Secure Socket Layer (SSL) and its variant, Transport Layer Security (TLS), are used toward ensuring server security. In this paper, we characterize the cryptographic strength ...
In the security chain the weakest link is definitely the human one: human beings cannot remember long secrets and often resort to rather insecure solutions to keep track of their ...