Identity-Based Linkable and Convertible Ring Signature
基于身份的可链接和可转换环签名

In this paper, the concepts of identity-based linkable ring signature and linkable convertible ring signature are proposed. Taken Zhang and Kim’s scheme as an example, a general method is given to add linkability and convertibility to some identity-based ring signatures. Then two efficient schemes are given for the first time, besides the complete anonymity and unforgeability under adaptively chosen message attack, one satisfying linkability, and the other satisfying both linkability and convertibility.