A fair group blind signature scheme
Yefeng He · Computer Engineering and Applications Journal · 2007
According to the Micali’s notion of fair cryptosystem,a fair group blind signature scheme is presented with an oblivious transfer protocol.It is based on the first CS97 group signature scheme.It not only meets the need of group blind signature,but also has the additional property that,with the help of a trusted entity,it is possible for the signer to link a message-signature pair and the corresponding signing protocol.So it can prevent criminals from participating in illegal activities.