J4 ›› 2013, Vol. 48 ›› Issue (09): 29-34.
• Articles •
HOU Hong-xia1,2, ZHANG Xue-feng2, DONG Xiao-li2
Recently, the aggregate signature is a hot topic concerned. An improved cerificateless aggregate signature scheme is constructed based on the certificateless cryptography. Compared with the existing schemes, the scheme has constant pairing computations, and the verification algorithm only requires three pairing computations, which greatly improves the efficiency of the signature verification. The improved scheme can resist the attack of TypeⅠand TypeⅡadversary in certificateless adversary model,and it is existentially unforgeable under the computational DiffieHellman assumption.The security proof of the improved scheme is given in the random oracle model.
certificateless cryptography; aggregate signature; bilinear pairing
HOU Hong-xia1,2, ZHANG Xue-feng2, DONG Xiao-li2. Improved certificateless aggregate signature scheme[J].J4, 2013, 48(09): 29-34.
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