New Identity-Based Identification and Signature Schemes in the Standard Model
Syh‐Yuan Tan, Swee‐Huay Heng · 2023
In this paper, we propose an efficient identity-based identification (IBI) scheme provably secure against impersonation under active and concurrent attacks in the standard model. Based on the proposed IBI scheme and two-tier signature technique, we construct an efficient IBS scheme that is provably secure against strong existential forgery under chosen message attack in the standard model. The security for our proposed IBI and IBS schemes are based on the established q-SDH assumption. The comparison analysis shows that our proposed schemes outperform some state-of-the-art schemes which are also provably secure in the standard model.