Cryptology ePrint Archive: Report 2006/367

An Attack on a Certificateless Signature Scheme

Xuefei Cao and Kenneth G. Paterson and Weidong Kou

Abstract: This paper demonstrates that a certificateless signature scheme recently proposed by Gorantla and Saxena is insecure. It is shown that an adversary who replaces the public key of a signer can then forge valid signatures for that signer without knowledge of the signer's private key.

Category / Keywords: public-key cryptography /

Date: received 25 Oct 2006

Contact author: kenny paterson at rhul ac uk

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Version: 20061103:161638 (All versions of this report)

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