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Security and Privacy in the Age of Uncertainty
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 many recipients. We also discuss the improvements achieved with respect to the multiple instances of adoi:10.1007/978-0-387-35691-4_4 fatcat:lh2wm375wzavji6v3k4lqxmz2u