Algebraic attack on Zhang-Wang digital signature algorithm
Yong-Zhang Luo, Cheng Zhang, Chenglian Liu, Chiehwen Ed Hsu · AIP conference proceedings · 2019
Zhang and Wang presented a variety of digital signature scheme neither using message redundancy nor one-way hash function. There are many different varieties of attacks on Zhang-Wang’s algorithm, such as forgery attack, two’s complement vulnerability, misused precedence of operator and probability analysis of parameters so on. In this paper the authors will show the algebraic attack on Zhang-Wang’s algorithm. We believe it is necessary one-way hash function or message recovery on their scheme.