Cryptology ePrint Archive: Report 2003/073

A Scheme for obtaining a Warrant Message from the Digital Proxy Signatures

Sunder Lal and Amit K Awasthi

Abstract: Mambo et al [6-7] introduced a proxy signature scheme. Neuman [8] extended the scheme for delegation by warrant, which was further extended by Kim et al [4] to partial delegation with a warrant. In this paper we propose a new type of digital proxy signature scheme in which the warrant message can be recovered from the proxy signature. In this scheme the warrant message is conveyed within the proxy signature and recovered by the verifier, i.e., the warrant need not be hashed or sent along with the proxy signature. It saves both communication bandwidth and storage space.

Category / Keywords: public-key cryptography / Proxy signature, Warrant message, Message recovery, Hash function

Publication Info: Not Published

Date: received 21 Apr 2003, last revised 21 May 2003

Contact author: awasthi_hcst at yahoo com

Available format(s): PDF | BibTeX Citation

Version: 20030521:102058 (All versions of this report)

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