New type of group blind signature scheme
Dake He · Jisuanji yingyong yanjiu · 2008
This paper constructed a provably secure ID-based group blind signature scheme on the basis of CZK's ID-based group signature scheme.The security of the new scheme was based on the computational Diffie-Hellman assumption under the random oracle model,of which was different from the scheme of LR98.In the mean time,the efficiency of the user to blind the content of the signer was improved.To blind the group signature of CZK,only added the computation of modular addition;while the scheme in LR98 added the computation of double discrete logarithm, root of the discrete logarithm and random permutation in order to blind the group signature of CS97.As a result,the new scheme is much lower than the one in LR98 with respect to computation complexity and higher with respect to efficiency.