A Forward-Secure Digital Signature Scheme Based on Guillou-Quisquater System
Hou Chang · Journal of Henan University of Science & Technology · 2006
Througn the cryptanalysis of a forward-secure digital signature scheme,it is found that the scheme has security leak and no forward security.A new forward-secure digital signature scheme based on GuillouQuisquater signature system is given,which achieves the property of forward security by the efficient update of signed secret key.The analysis shows that the new scheme has higher security.