IM-ACS: An Access Control Scheme Supporting Informal Non-malleable Security in Mobile Media Sharing System

摘要

Subscribers own their subscription credentials when they accesses mobile media. They cannot extend their subscription credentials without permission. We propose an Access Control Scheme supporting Informal non-Malleable security (IM-ACS) for mobile media. In our scheme, Attribute Based Encryption method is applied to bring de-couple and fine-grain features when publishers share their media data with subscribers. All-or-Nothing transfer method is used to ensure the efficiency when publishers encrypt their media data before upload it onto cloud server. The method of re-encryption on cloud is adopted to ensure that subscribers cannot obtain any acknowledge from the previous data accesses unless publisher allow them to. This scheme is analyzed to be secure.