Lei Li1, Chungen Xu1, *, Xiaoling Yu1, Bennian Dou1, Cong Zuo2
Journal of Cyber Security, Vol.2, No.1, pp. 9-23, 2020, DOI:10.32604/jcs.2020.06313
Abstract Searchable encryption technology makes it convenient to search encrypted
data with keywords for people. A data owner shared his data with other users on the
cloud server. For security, it is necessary for him to build a fine-grained and flexible
access control mechanism. The main idea of this paper is to let the owner classify his data
and then authorizes others according to categories. The cloud server maintains a
permission matrix, which will be used to verify whether a trapdoor is valid or not. In this
way we can achieve access control and narrow the search range at the same… More >
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