A group oriented verifiable threshold signature scheme based on factorization
Gan Yuan · Journal of the China Railway Society · 2003
: The group oriented (t,n) threshold digital signature schemes have some problems in that the group secret parameter will be revealed if any t or more shadowholders conspire together with each other and the efficience of verification is poor. A secure and efficient grouporiented (t,n) threshold signature scheme based on the modified signature of the GuillouQuisquater's digital signature has been proposed in this paper. This scheme not only has the property of group signature and threshold signature ,but also has some novel features including verification, robustness , stableness and efficient verification.