Further cryptanalysis and improvement of threshold signature scheme
Jianzhong Zhang, Yingying Zhou · Computer Engineering and Applications Journal · 2012
This paper presents a security analysis of Gao et al's(t,n)threshold signature scheme without trusted party,which can not resist outward attack and public-key attack.Besides,it also improves Gao et al's scheme and proposes a new(t,n)threshold signature scheme.The improved scheme doesn't need a trusted center,its key generation only runs an interactive protocol among all the participants,and overcomes the original scheme's weakness.The results prove it is secure and effective.