Practical Forward Security Threshold Multi-signature Scheme
Geng Yong-Jun · Science Technology and Engineering · 2013
With the presence of the theory defects and unpractice,a new practical forward-secure threshold multi-digital signature seheme was proposed.Keys of members of the group are updated as time goes periodically, and the corresponding public key remains the same throughout the effective period of time.Even if the k-time stage signature key is compromised,any attackers can not launch the forward signing key of k - 1 time stage,They can not forge signature before the k - 1 time stage.It can make the loss to a minimum even if his signature key is compromised. The scheme is proved unforgery,forword security and pratice.