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An Improved ID-based Proxy Signature Scheme Based on Elliptic Curve Cryptography

Authors:
Deepa Mukherjee
Prakash Vyavahare
Manish Panchal

Keywords: Proxy Signature Scheme; ID based Cryptography; designated verifier scheme; ECC; Knapsack Algorithm;

Abstract:
Proxy signature schemes allow the original signer of a message to delegate his signing capability to a proxy signer to generate a valid proxy signature on behalf of original signer. One such scheme is proposed by Zhang and Kim which is based on Elliptic Curve Cryptography and Identity based Signature. Zhang's scheme requires secure channel for transmission of private key, has no provision of private key revocation and signature verification by any user. In this paper, we propose an improved ID based proxy signature scheme based on bilinear pairing. The scheme employs Knapsack algorithm for key distribution which eliminates the need for secure channel for sending the private keys from PKG to respective users. The scheme also supports private key revocation by concatenating time parameter with public key of proxy signers. The signature can be verified only by designated verifier. It is shown that the proposed proxy signature scheme satisfies all security requirements. Finally, the proposed proxy signature scheme is compared with that of Zhang and Kim's scheme and is shown to have merits over the latter one. Therefore, proposed scheme can be a potential candidate for implementation of future proxy signature schemes.

Pages: 235 to 240

Copyright: Copyright (c) IARIA, 2016

Publication date: July 24, 2016

Published in: conference

ISSN: 2162-2116

ISBN: 978-1-61208-493-0

Location: Nice, France

Dates: from July 24, 2016 to July 28, 2016