7Rabin M. Etficient Dispersal of Information for Security, Load Balancing, and Fault Tolerance[J]. Journal of the ACM, 1989,36(2) : 335 - 348.
8Garay J, Gennaro R, Jutla C, et al. Secure Distributed Storage and Retrieval[C].Proceedings of the 11th International Workshop on Disrilbuted Algorithms.London:Springer-Verlag.1997:275-289