Abstract. A multi-party contract signing protocol allows a set of participants to exchange messages with each other with a view to arriving in a state in which each of them has a p...
We introduce the novel notion of Verifiable Encryption of Chameleon Signatures (VECS), and then use it to design a three-round abuse-free optimistic contract signing protocol. Key...
A contract is a non-repudiable agreement on a given contract text, i.e., a contract can be used to prove agreement between its signatories to any verifier. A contract signing sche...
Birgit Pfitzmann, Matthias Schunter, Michael Waidn...
A multi-party contract signing (MPCS) protocol is used for a group of signers to sign a digital contract over a network. We analyse the protocols of Mukhamedov and Ryan (MR), and o...
We analyze the multi-party contract-signing protocols of Garay and MacKenzie (GM) and of Baum and Waidner (BW). We use a finite-state tool, MOCHA, which allows specification of pr...