Fair multi-party contract signing using private contract signatures
نویسندگان
چکیده
منابع مشابه
Fair multi-party contract signing using private contract signatures
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 pre-agreed contract text signed by all the others. Garay and Mackenzie (GM) proposed such protocol based on private contract signatures, but it was later shown to be flawed by Chadha, Kremer and Scedrov (CKS); the authors CKS al...
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Multi-party contract signing (MPCS) protocols allow a group of signers to exchange signatures on a predefined contract. Previous approaches considered either completely linear protocols or fully parallel broadcasting protocols. We introduce the new class of DAG MPCS protocols which combines parallel and linear execution and allows for parallelism even within a signer role. This generalization i...
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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 pre-agreed contract text signed by all the others. “Optimistic” such protocols allow parties to sign a contract initially without involving a trusted third party T . If all signers are honest and messages are not arbitrarily del...
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A contract is a non-repudiable agreement on a given contract text, i.e., it can be used to prove unanimous agreement between its signatories to any veri er. A contract signing protocol is used to fairly compute a contract so that, even if n 1 of the n signatories misbehave, either all or none of them obtain a contract. Optimistic contract signing protocols use a third party to ensure fairness, ...
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Contract signing is a fundamental service in doing business. The Internet has facilitated the electronic commerce, and it is necessary to find appropriate mechanisms for contract signing in the digital world. From a designing point of view, digital contract signing is a particular form of electronic fair exchange. Protocols for generic exchange of digital signatures exist. There are also specif...
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ژورنال
عنوان ژورنال: Information and Computation
سال: 2008
ISSN: 0890-5401
DOI: 10.1016/j.ic.2007.07.007