A Certificateless Signature and Group Signature Schemes against Malicious PKG


Identity-based crypto system has many advantages over PKI-based cryptosystem in key distribution, but key escrow is always an inherent drawback. In order to solve the problem, certificateless public key cryptography was introduced by Al-Riyami and Paterson in [8]. In this paper, we first introduce a certificateless signature scheme secure against both… (More)
DOI: 10.1109/AINA.2008.84