A short identity-based proxy ring signature scheme from RSA

Identity-based proxy ring signature concept was introduced by Cheng et al. in 2004. This primitive is useful

where the privacy of proxy signers is required. In this paper, the first short provably secure identity-based

proxy ring signature scheme from RSA assumption has been proposed. In addition, the security of the proposed

scheme tightly reduces to the RSA assumption, and therefore, the proposed scheme has a proper advantage in

security reduction compared to the ones from RSA. The proposed scheme not only outperforms the existing

schemes in terms of efficiency and practicality, but also does not suffer from the proxy key exposure attack

due to the use of the sequential aggregation paradigm.