Secure communication mechanism for VSN based on certificateless signcryption

Abstract

To solve the communication security problems of vehicular social network (VSN), an efficient certificateless signcryption scheme was proposed.The proposed scheme was proven secure in the random oracle model based on the computational Diffie-Hellman problem and elliptic curve discrete logarithm problem, which provided confidentiality and unforgeability protection for VSN members.In addition, when the pseudonym mechanism was used to solve the privacy protection problem in VSN, without installing tamper-proof device, a self-generation mechanism for vehicle pseudonyms and their keys was proposed.The performance analysis shows that the proposed scheme can decrease communication cost, and significantly reduce the computation overhead of the key generation center.

Keywords

• VSN;VANET;privacy protection;certificateless cryptography;signcryption