Systems that authenticate a user based on a shared secret (such as a password or PIN) normally allow anyone to query whether the secret is a given value. For example, an ATM machi...
— We present an efficient implementation of a fair e-cash protocol especially designed for mobile wireless environments. Our protocol attempts to offer a reasonable balance betw...
One of the most fundamental problems in computer security is protecting sensitive digital information from unauthorized disclosure. There are a number of challenges, such as spywa...
The combination of username and password is widely used as a human authentication mechanism on the Web. Despite this universal adoption and despite their long tradition, password s...
Trust management credentials directly authorize actions, rather than divide the authorization task into authentication and access control. Unlike traditional credentials, which bi...
Stefan Miltchev, Vassilis Prevelakis, Sotiris Ioan...