Controllable Ring Signatures and Its Application to E-Prosecution

Wei Gao, Guilin Wang, Xueli Wang, Dongqing Xie
2013 Journal of Computers  
This paper introduces a new concept called controllable ring signature which is ring signature with additional properties as follow. (1) Anonymous identification: by an anonymous identification protocol, the real signer can anonymously prove his authorship of the ring signature to the verifier. And this proof is non-transferable. (2) Linkable signature: the real signer can generate an anonymous signature such that every one can verify whether both this anonymous signature and the ring signature
more » ... are generated by the same anonymous signer. (3) Convertibility: the real signer can convert a ring signature into an ordinary signature by revealing the secret information about the ring signature. These additional properties can fully ensure the interests of the real signer. Especially, compared with a standard ring signature, a controllable ring signature is more suitable for the classic application of leaking secrets. We construct a controllable ring signature scheme which is provably secure according to the formal definition. As an application, we design a E-prosecution scheme based on this controllable ring signature scheme and show its security.
doi:10.4304/jcp.8.4.833-841 fatcat:5xka2snexndlliujr3ntkhvwzq