Cryptology ePrint Archive: Report 2014/808

Online/Off-line Ring Signature Scheme with Provable Security

Jayaprakash Kar

Abstract: The article proposes an Online/Off-line Ring Signature Scheme in random oracle model.Security of the scheme relies on both Computational Diffie-Hellman and k-CAA problems. The proposed scheme is proven the two most important security goals Existential Unforgeability and Signer Ambiguity. Also it has robustness property where the misbehavior of the signer can be detected. Signing process is performed in two phases online and offline. All heavy computations are performed in Off-line stage. So the overall computational cost is reduced and very less than the traditional signature scheme. The scheme can be applied to Mobile Ad Hoc Networks (MANETs) that undergo node mobility.

Category / Keywords: cryptographic protocols /

Date: received 7 Oct 2014

Contact author: jayaprakashkar at yahoo com

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Version: 20141011:234240 (All versions of this report)

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