A novel attribute-based searchable encryption scheme with attribute revocation

Abstract

In this paper, a searchable attribute-based encryption scheme with attribute revocation is proposed to solve the problem of secure data sharing and efficient retrieval in cloud storage. Based on the bilinear pairings construction, the scheme includes five algorithms: system initialization, key generation, data encryption, search and decryption, and attribute revocation, which realizes fine-grained access control and keyword ciphertext search. Through the attribute update key mechanism, the key and ciphertext can bes updated without re-encryption when the user attribute changes. Security analysis proves that the scheme satisfies adaptive security in the standard model, and performance evaluation shows that the efficiency of attribute revocation is superior to the existing schemes, especially suitable for large-scale cloud storage environment.