Efficient and Secure Certificateless Aggregate Signature Scheme in Vehicle Networks
Certificateless cryptography not only eliminates the key escrow problem inherent in ID-based cryptography,but also maintains the advantages of ID-based cryptography that does not need public key certificate.In order to ensure the integrity,authenticity,validity and immediacy of the communication between vehicles in the VANETs system,this paper proposed a certificateless aggregate signature scheme without bilinear pairing and the scheme could resist coalition attacks.In the random oracle model,the security of the algorithm was rigorously proved based on the elliptic curve discrete logarithm problem and bifurcation lemma.The performance and efficiency analysis show that the scheme is effective,it can ensure the integrity and authenticity of communication data,reduce bandwidth and storage overhead,and improve the verification efficiency.
NETL
NSTL
万方数据
维普
