Cryptanalysis on Chen-Qiu-Zheng Blind Signature Scheme 123
Chun‐I Fan, Lin-Chuan Wu, Vincent Shi-Ming Huang · 2008
Chen, Qiu, and Zheng proposed a Rabin-like blind signature scheme, which is based on the square-root problem. Although their scheme is simple and efficient, it can be compromised when choosing some partic-ular blinding factors. In this manuscript, the scheme is demonstrated as not being secure.