Server-Aided Revocable Attribute-Based Encryption from Lattices

Xingting Dong, Yanhua Zhang, Baocang Wang, Jiangshan Chen
2020 Security and Communication Networks  
Attribute-based encryption (ABE) can support a fine-grained access control to encrypted data. When the user's secret-key is compromised, the ABE system has to revoke its decryption privileges to prevent the leakage of encrypted data. Although there are many constructions about revocable ABE from bilinear maps, the situation with lattice-based constructions is less satisfactory, and a few efforts were made to close this gap. In this work, we propose the first lattice-based server-aided revocable
more » ... attribute-based encryption (SR-ABE) scheme and thus the first such construction that is believed to be quantum resistant. In the standard model, our scheme is proved to be secure based on the hardness of the Learning With Errors (LWE) problem.
doi:10.1155/2020/1460531 fatcat:6kevau6x5baivlri5wt2fyjtnu