Constantin POPESCU
A Group Blind Signature Scheme Based on the Okamoto-Shiraishi Assumption
Abstract.
A group blind signature requires that a group member signs on group's behalf
a document without knowing its content. In this paper we propose an efficient
and provably secure group blind signature scheme based on the Okamoto-Shiraishi
assumption. Our scheme is an extension of the group signature scheme from
reference [22] that adds the blindness property. |