Attacks on two signature schemes based on bilinear pairings
Hongzhen Du · Jisuanji yingyong yanjiu · 2010
Wen and Ma presented an aggregate signature scheme in the public key infrastructure setting and claimed their scheme is provably secure in the random oracle model. But this paper pointed out Wen-Ma scheme was universally forgeable, and an adversary could forge not only any signer’s ordinary signatures but also aggregate signatures produced by many different signers. In addition, Dai et al. proposed an identity-based sinature scheme. DU Hong-zhen found out their scheme was insecure and gave two forgery attacks on the scheme.