Netinfo Security ›› 2019, Vol. 19 ›› Issue (3): 72-80.doi: 10.3969/j.issn.1671-1122.2019.03.009

• Orginal Article • Previous Articles     Next Articles

Certificateless Multi-server Searchable Encryption Scheme in Cloud Environment

Yulei ZHANG, Xiangzhen LIU(), Xiaoli LANG, Caifen WANG   

  1. College of Computer Science and Engineering, Northwest Normal University, Lanzhou Gansu 730070, China
  • Received:2018-03-15 Online:2019-03-19 Published:2020-05-11

Abstract:

With the gradual popularization of cloud storage technology, how to protect the privacy of users is becoming a research hotspot. To solve this problem, you need to use searchable encryption technology. Searchable encryption can perform keyword searches on ciphertext. The searchable encryption scheme under the certificateless cryptosystem solves the problem of key escrow under the identity cryptosystem, and also reduces the burden of certificate management under the public key infrastructure. This paper proposes a new certificate-free multi-server searchable encryption scheme that allocates storage and search functions to different servers. Compared with a single server, it not only improves data retrieval efficiency, but also reduces the burden on the server. The program has better utility. Compared with the original scheme, this scheme reduces the number of bilinear pairs and improves the efficiency of the operation. And under the random oracle model, it shows that the scheme is safe.

Key words: certificateless, searchable encryption, multiple servers

CLC Number: