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Mathematical Problems in Engineering
Volume 2018 (2018), Article ID 7379364, 19 pages
Research Article

WPKI Certificate Verification Scheme Based on Certificate Digest Signature-Online Certificate Status Protocol

Ke Gu,1,2,3 Na Wu,1 Yongzhi Liu,1 Fei Yu,1 and Bo Yin1

1School of Computer & Communication Engineering, Changsha University of Science & Technology, Changsha 410114, China
2Hunan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation, Changsha University of Science & Technology, Changsha 410114, China
3School of Information Science and Engineering, Central South University, Changsha 410083, China

Correspondence should be addressed to Ke Gu; moc.361@2754kg

Received 17 May 2017; Revised 26 September 2017; Accepted 1 November 2017; Published 11 February 2018

Academic Editor: Yakov Strelniker

Copyright © 2018 Ke Gu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Aiming at the problems of the WPKI certificate verification schemes based on online certificate status protocol (OCSP), this paper proposes a WPKI certificate verification scheme based on the certificate digest signature-online certificate status protocol (CDS_OCSP). Compared with the existing schemes, the proposed scheme optimizes the number of communication connections between the communication entities and the network, reduces the consumption of the wireless network bandwidth in the certificate verification process, and uses the elliptic curves cipher- (ECC-) based encrypting/decrypting functions to sign and verify the certificate digest, which ensures the consistency of the verified certificates among the communication entities. The proposed scheme makes the certificate verification process more efficient and secure. The experimental results show that the proposed scheme effectively reduces the communication consumption of the wireless network and saves the storage space of the wireless entities.