In this paper, we present two failures in the blind signatures based voting system Votopia [2] which has been tested during the last World Soccer Cup. We then propose a fix which r...
Recent research has shown that annotations are useful for representing access restrictions to the axioms of an ontology and their implicit consequences. Previous work focused on co...
Abstract An encryption scheme is non-malleable if the adversary cannot transform a ciphertext into one of a related message under the given public key. Although providing a very st...
Abstract. We describe a weakness in the High Bandwidth Digital Content Protection (HDCP) scheme which may lead to practical attacks. HDCP is a proposed identity-based cryptosystem ...
Scott Crosby, Ian Goldberg, Robert Johnson, Dawn X...
For the two last decades, people have tried to provide practical electronic cash schemes, with more or less success. Indeed, the most secure ones generally suffer from inefficiency...