Partially Blind Signature Scheme Based on Threshold

Partially blind signature schemes in practice can not only protect the message sender's privacy efficiently but also limit the sender's ability by embedding the signer's information. This paper presents a new threshold partially blind signature scheme based on the discrete logarithms. This scheme has several security characteristics, such as blindness, non-forgery and robustness. It is able to prevent adversaries from getting the secrets or sub secrets and efficiently guard against cheating among participants. It analyzes the correctness and efficiency of the scheme, which make the scheme practical.