Certificateless Signature Scheme with Identity Revocation Function

This paper presents a security analysis of the certificateless signature scheme with revocation given by Ju et al.,and shows that the identity revocation property of the scheme can be easily damaged.Based on this idea,using bilinear pairing,it proposes an improved certificateless signature scheme with identity revocation and gives its security proof under the oracle model.Due to the sound properties of bilinear pairing,the scheme is simple and efficient.