On batch verification with group testing for vehicular communications

  • Authors:
  • Chenxi Zhang;Pin-Han Ho;Janos Tapolcai

  • Affiliations:
  • Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada N2L 3G1;Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada N2L 3G1;Department of Telecommunications and Media Informatics, Budapest University of Technology and Economics, Budapest, Hungary H-1117

  • Venue:
  • Wireless Networks
  • Year:
  • 2011

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Abstract

In this paper, an efficient identity-based batch signature verification scheme is proposed for vehicular communications. With the proposed scheme, vehicles can verify a batch of signatures once instead of in a one-by-one manner. Hence the message verification speed can be tremendously increased. To identify invalid signatures in a batch of signatures, this paper adopts group testing technique, which can find the invalid signatures with few number of batch verifications. In addition, a trust authority in our scheme is capable of tracing a vehicle's real identity from its pseudo identity, and therefore conditional privacy preserving can also be achieved. Moreover, since identity-based cryptography is employed in the scheme to generate private keys for pseudo identities, certificates are not required and thus transmission overhead can be significantly reduced.