Cryptanalysis of verifiable threshold signature scheme
Jianzhong Zhang · Jisuanji yingyong yanjiu · 2007
Through the cryptanalysis of a verifiable threshold signature scheme presented by Zhang and Wen,concluded it not only exist collusion attack and forgery attack,but have no undeniability.A new improved scheme was proposed.In the scheme,the security flaws of original scheme can be overcome and sub secret keys can be transmitted through public channel,so it is secure and practical.