An improved structured multisignature scheme of both sequential and broadcasting algorithms
Zhibin Li · Journal of Computer Applications · 2007
To improve the original structured multi-signature scheme based on ElGamal system,a new scheme was presented,which was more generalized and can be applied to all kinds of signing structures.The original scheme was analyzed and the insecure cases,such as conspiracy of inner members to cheat or deny,were pointed out.The improved scheme solves these problems by adding a signature-centre and a time-stamp.