On the security of certificateless signature scheme without pairing
Zhenjie Huang · Journal of Computer Applications · 2010
Certificateless public key cryptology does not need certificates to verify the validity of public key,and overcomes the key escrow problem in ID-based public key cryptology.By analyzing the security of a certificateless signature scheme without pairing,it was pointed out that the scheme is insecure against a malicious Key Generating Centre(KGC) attack.Then,an improved scheme was proposed,whose security was based on the Discrete Logarithm Problem(DLP).