Non-Repudiable Dynamic PDP with Stronger Security based on Stateful Rank Based Skip List

摘要

In this paper, we propose a PDP scheme supporting dynamic data and guarantees the integrity of stored data against malicious servers and clients. To design the scheme, we firstly design a new authenticated data structure so-called Stateful Rank based Skip List which reflects the latest version of stored data. Based on the data structure, we design a non-repudiable dynamic PDP which permits servers and clients to manage the version of stored data in an authenticated and non-repudiable way, so that our scheme prevents malicious servers and clients from cheating the latest version of the stored data.