A Linkable and Convertible ID-based Ring Signature

Digital signatures have been widely used in our life, and many variants of digital signatures have been studied these years. Ring signature is one of the variants that pro-vides anonymity for signers. Ring signature has a non-central structure, and it is suitable to achieve in ID-based cryptography(IBC)where public keys can be used before corresponding secret key generated in IBC. In this paper, we will analyses me previous schemes and propose a general and secure way to achieve linkable and convertible ID-based ring signature, also we will provide an efficient instance with security proof.