Credentials like passwords or cryptographic key pairs are a means to prove one’s identity to a web server. A practical problem in this context is the question of how a user can t...
Tobias Straub, Thilo-Alexander Ginkel, Johannes Bu...
Abstract. Suppose Alice and Bob are two entities (e.g. agents, organizations, etc.) that wish to negotiate a contract. A contract consists of several clauses, and each party has ce...
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. This paper presents a method to generate unique and nevertheless highly random pseudonyms in a distributed environment. More precisely, each user can now generate his pse...
In PODC 2003, Micali presented a fair electronic exchange protocol for contract signing with an invisible trusted party [17]. The protocol was filed as a US patent No 5666420 in 1...