标题：Fuzzy matching: multi-authority attribute searchable encryption without central authority
作者：Zhu, Binrui; Sun, Jiameng; Qin, Jing; Ma, Jixin
作者机构：[Zhu, Binrui; Sun, Jiameng; Qin, Jing] Shandong Univ, Sch Math, Jinan, Shandong, Peoples R China.; [Qin, Jing] Chinese Acad Sci, State Key Lab Infor 更多
通讯作者：Qin, Jing;Qin, J;Qin, J
通讯作者地址：[Qin, J]Shandong Univ, Sch Math, Jinan, Shandong, Peoples R China;[Qin, J]Chinese Acad Sci, State Key Lab Informat Secur Inst Informat Engn, Beijing, 更多
关键词：Multi-authority; Cloud computing; Searchable encryption; Attribute-based; encryption; Fuzzy identity
摘要：Attribute-based keyword search (ABKS) supports the access control on the search result based upon fuzzy identity over encrypted data, when the search operation is performed over outsourced encrypted data in cloud. However, almost ABKS schemes trust a single authority to monitor the attribute key for users. In practice, we usually have different entities responsible for monitoring different attribute keys to a user. Thus, it is not realistic to trust a single authority to monitor all attributes keys for ABKS scheme in practical situation. Although a large body of ABKS schemes have been proposed, few works have been done on multi-authority attribute searchable encryption. We propose a multi-authority attribute searchable encryption without central authority in this paper. Comparing previous ABKS schemes, we extend the single-authority ABKS scheme to multi-authority ABKS scheme and remove the central authority in multi-authority ABKS scheme. We analyze our scheme in terms of security and efficiency.