A threshold digital signature scheme based on discrete logarithm and quadratic residue
Yu Ge · Journal of China Institute of Communications · 2002
A threshold digital signature scheme is proposed by connecting digital signature scheme with Shamir secret sharing scheme. Its security is based on the difficulty of solving discrete logarithm in finite field and quadratic residue on some special conditions. The effective method is constructed to identify malicious shareholders who provide incorrect partial signature to disrupt the signature process, illegal users and signature generator who forges a signature.