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论文类型：期刊论文

发表时间：2011-09-01

发表刊物：International Journal of Digital Content Technology and its Applications

收录刊物：EI、Scopus

卷号：5

期号：9

页面范围：281-289

ISSN号：19759339

摘要：A multi-secret sharing scheme allows several secrets to be shared among a group people, which reduces the number of interactions between the dealer and the participants. In this paper, we generalize the ideal of multi-secret sharing scheme into attribute based encryption and present two constructions of dynamic multi-attribute based encryption schemes. In our system, let k be the maximum of messages encrypted of the system one time, k'(1  k'  k) messages can be encrypted during one process. Our schemes can be applied in the environment that several messages need to be encrypted simultaneously or that a large message has to be divided into smaller pieces to encryption. In additional, we also propose complexity assumption and security model for our schemes and prove its security.