Abstract
In this paper we present a protocol for Certified E-Mail that ensures temporal authentication. We first slightly modify a previously known three-message optimistic protocol in order to obtain a building block that meets some properties. We then extend this basic protocol enhancing it with the temporal authentication by adding a single message, improving the message complexity of known protocols. The fairness of the protocol is ensured by an off-line Trusted third party that joins the protocol only in case one of the players misbehaves. In order to guarantee temporal authentication we assume the existance of an on-line time stamping server.
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Galdi, C., Giordano, R. (2004). Certified E-Mail with Temporal Authentication: An Improved Optimistic Protocol. In: Katsikas, S., Lopez, J., Pernul, G. (eds) Trust and Privacy in Digital Business. TrustBus 2004. Lecture Notes in Computer Science, vol 3184. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30079-3_19
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DOI: https://doi.org/10.1007/978-3-540-30079-3_19
Publisher Name: Springer, Berlin, Heidelberg
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