It is well known that universally composable multiparty computation cannot, in general, be achieved in the standard model without setup assumptions when the adversary can corrupt a...
d Abstract) Ran Canetti and Marc Fischlin Abstract. We propose a new security measure for commitment protocols, called Universally Composable (UC) Commitment. The measure guarantee...
A universally composable (UC) blind signature functionality requres users to commit to the message to be blindly signed. It is thereby impossible to realize in the plain model. Th...
Abstract. Key exchange protocols in the setting of universal composability are investigated. First we show that the ideal functionality FKE of [9] cannot be realized in the presenc...
Oblivious transfer is one of the most important cryptographic primitives, both for theoretical and practical reasons and several protocols were proposed during the years. We provid...