## Cryptology ePrint Archive: Report 2016/1151

A Novel Multi-factor ID-based Designated Verifier Signature scheme

Mike Scott

Abstract: In a classic digital signature scheme, the global community is capable of verifying a signature. In a designated verifier scheme (DVS), only the designated verifier has this capability. In a classic DVS scheme the signer themselves designates'' the entity that will have the capability of verifying their signature. In a pure identity-based signature scheme a Trusted Authority is introduced, and is responsible for issuing secret signing keys to all participants. In our proposed scheme it is this TA, not the signer, that designates the verifier, and to this end the TA issues the designated verifier with its own secret. Finally we propose a variation that supports non-repudiation, plus a hardware-free multi-factor signature capability.

Category / Keywords: cryptographic protocols / digital signatures

Date: received 14 Dec 2016, last revised 18 Aug 2018

Contact author: mike scott at miracl com

Available format(s): PDF | BibTeX Citation

Note: Short appendix on Time Permits added

Short URL: ia.cr/2016/1151

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