Threshold signature scheme for group communications without shared distribution center
Dongmei Yu · Computer Engineering and Applications Journal · 2007
In this paper,we shall propose a (t,n) threshold signature with(k,l) threshold-shared verification to be used in a group-oriented cryptosystem without a Shared Distribution Center(SDC).In this scheme,any t participants can represent a group (signing group) to sign a message,and any k participants can represent another another group(verifying group) to verify the signature.We need no SDC to distribute the public and private keys to all the participants in the two groups.Hence,this scheme is more practical in real-world application and more efficient than its predecessors in terms of communication and computationa;complexity as well as storage.