Abstract: Internet of Things search technology is widely used in daily life,however,due to the openness of the Internet of Things search engine and the incomplete credibility of the search center,information stored in the search background has serious security issues.This paper proposed a secure and efficient attribute-based access control scheme for suppor-ting ciphertext search to solve this problem.In terms of data protection,in order to ensure the security of user attribute information and data,access policy partial hiding and attribute authority decentralization are used.Besides,ciphertext fixed length is used to improve algorithm efficiency and save storage space.At the same time,this paper proposed an attribute revocation scheme that supports policy comparison,which can reduce the computational complexity in the traditional revocation scheme and improve the efficiency of re-encryption.In the ciphertext search,the super peer is introduced and the hybrid index is used to improve the retrieval efficiency.The analysis results show that the solution effectively solves the security problem in the Internet of Things search technology

Key words: Access strategy partially hidden, Attribute authority, Ciphertext search, Internet of Things search technology, Property revocation