JISE


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Journal of Information Science and Engineering, Vol. 33 No. 2, pp. 485-497


Post-Quantum Secure Public Key Broadcast Encryption with Keyword Search

YANG YANG1,+, SHU-LVEYANG2, FENG-HE WANG3 AND JIN SUN4
1College of Mathematics and Computer Science
2College of Physics and Information Engineering
Fuzhou University
Fuzhou, 350108 China
3Department of Mathematics and Physics
Shandong Jianzhu University
Jinan, 250101 China
4Department of Application Mathematics
Xi’an University of Technology
Xi’an, 710048 China
+E-mail: yang.yang.research@gmail.com

    In remote data storage system, the information privacy is the main concern of the users. Data confidentiality, keyword search and access control are important characteristics that should be supported in such system. With the advent of quantum computer, number theory related assumptions are vulnerable to quantum attack. In this context, we propose a post-quantum secure searchable encryption scheme. Data owner's files are stored in encrypted form. The keyword search function can be authorized to multiple users without sharing private key. Based on the learning with errors (LWE) assumption, the scheme is proved secure against chosen-keyword attack. The intractability of LWE problem guarantees its security in quantum age.

Keywords: post-quantum secure, multi-user, public key encryption with keyword search, chosen keyword attack, learning with errors

  Retrieve PDF document (JISE_201702_12.pdf)