Nominative Proxy Ring Signature

In a nominative proxy ring signature scheme, an original signer delegates his nominative signing power to some proxies forming a ring. The member of the ring can generate a nominative signature on behalf of the original signer and the ring. In a nominative proxy ring signature scheme, only the nominee can verify the ring signature and if necessary, only the nominee can prove its validity to the third party. In this paper, we present the first nominative proxy ring signature scheme and we prove its security.