Proxy Re-encryption(PRE) is greatly concerned by researchers recently. It potentially has many useful applications in network communications and file sharing. Secure distributed cryptographic file system is one of its applications. But the practical applications of PRE are few. And even fewer of them are tested by systematically designed experiments. Appling a couple of representative algorithms proposed by BBS,Ateniese,Shao,et al.,a distributed file system is designed. In the system,some substitute mechanisms such as data dispersal,dynamic file sharing,are well-applied. A lot of features such as flexible authorization and data redundancy are embraced in the system. The comparison evaluation justified that the system is more practical and efficient.
展开▼
