INFORMATICAInformatica0868-49520868-4952VUinf1820510.15388/Informatica.2007.174Research articleIdentity Based Strong Designated Verifier Signature Scheme✩KancharlaPhani Kumarkpkumar@mtech.idrbt.ac.inGummadidalaShailajagshailaja@mtech.idrbt.ac.inSaxenaAshutoshashutosh_saxena01@infosys.comSecure Technology Lab., Institute for Development and Research in Banking Technology, Castle Hills, Masab Tank, Hyderabad 500057, IndiaApplication Security and Privacy, SETLabs, Infosys Technologies Limited, Survey No.210, Lingampally, Hyderabad 500019, India

Part of work was carried out when the author was affiliated to Secure Technology Lab., IDRBT, Hyderabad, India.

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We propose an Identity Based Strong Designated Verifier Signature (IBSDVS) scheme using bilinear pairings. Designated Verifier Signature finds application in e-voting, auctions and call for tenders. We prove that the scheme is secure against existential forgery under adaptively chosen message and identity attack in random oracle model. We also show that the problem of delegatability does not exist in our scheme.

designated verifier signaturesdeligatabilityrandom oraclebilinear pairings