A New Timestamping Scheme Based on Skip Lists

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Time stamping is a cryptographic technique providing us with a proof-of-existence of a message/document at a given time. Several times-tamping schemes have already been proposed [1-10]. In this paper, we first define a new timestamping scheme which is based on skip lists [11]. Then, we show that our scheme offers nice properties and optimal performances.

This work was supported by the Conseil Général des Landes and the French ministry for research under ACI Sécurité Informatique 2003-2006, Projet CHRONOS.