A Multi-Party Non-Repudiation Protocol
نویسندگان
چکیده
We present a multi-party non-repudiation protocol, based on a group encryption scheme. We define multi-party non-repudiation, compare it to multi-party fair exchange and show some fundamental differences between these two problems. This is the first effort to generalize nonrepudiation to the multi-party case. Our definitions and the resulting protocol are more general than the ones given in the only comparable work, a multi-party certified mail protocol. Finally we also give an example of a group encryption scheme that can be used with our protocol.
منابع مشابه
A Multi-party Optimistic Non-repudiation Protocol
In this paper we consider the optimistic approach of the non-repudiation protocols. We study a non-repudiation protocol with off-line trusted third party and we keep on with the definition of the multi-party non-repudiation, compare it to multi-party fair exchange and show some fundamental differences between these two problems. Finally, we generalize our protocol and propose a multi-party non-...
متن کاملA Multi-Party Non-Repudiation Protocol for Exchange of Different Messages
Non-repudiation is a security service that provides cryptographic evidence to support the settlement of disputes. In this paper, we introduce the state-of-the-art of multi-party non-repudiation protocols, and analyze the previous work where one originator is able to send the same message to many recipients. We propose a new multi-party non-repudiation protocol for sending different messages to ...
متن کاملNon-repudiation protocols for multiple entities
Non-repudiation is a security service that provides cryptographic evidence to support the settlement of disputes. In this paper, we introduce the state-of-the-art of non-repudiation protocols for multiple entities. We extend an existing multi-party non-repudiation (MPNR) protocol to allow an originator to send different messages to many recipients in a single transaction. We further propose an ...
متن کاملAn Efficient Non-repudiation Protocol
Fairness may be a desirable property of a nonrepudiation service. Protocols can achieve fairness through the involvement of a trusted third party but the extent of the trusted third party's involvement can vary between protocols. Hence, one of the goals of designing an efficient non-repudiation protocol is to reduce the work load of the trusted third party. In this paper we present a variant of...
متن کاملMechanical Proofs about a Non-repudiation Protocol
A non-repudiation protocol of Zhou and Gollmann [18] has been mechanically verified. A non-repudiation protocol gives each party evidence that the other party indeed participated, evidence sufficient to present to a judge in the event of a dispute. We use the theorem-prover Isabelle [10] and model the security protocol by an inductive definition, as described elsewhere [1, 12]. We prove the pro...
متن کامل