Tuesday , December 18 2018

A Secure Proxy Signature Scheme Based on the Hardness of the Decisional Diffie-Hellman Problem

Constantin Popescu
Department of Mathematics and Computer Science, University of Oradea
Oradea 410087, Romania

Abstract:

In this paper we present a secure proxy signature scheme, which allows an original signer to delegate his/her signing capability to a proxy signer. Then the proxy signer can sign a message on behalf of the original signer. The proposed proxy signature scheme is based on the hardness of the decisional Diffie-Hellman problem. We give the formal definition and security model of a proxy signature scheme and prove its security in our security model. Our proxy signature scheme does not use bilinear pairings, which results in greater efficiency and ease of implementation.

Keywords:

Proxy signature, proxy signer, security model, delegation, warrant.

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CITE THIS PAPER AS:
Constantin POPESCU, A Secure Proxy Signature Scheme Based on the Hardness of the Decisional Diffie-Hellman Problem, Studies in Informatics and Control, ISSN 1220-1766, vol. 21 (3), pp. 293-302, 2012.

https://doi.org/10.24846/v21i3y201208