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Journal of Information Science and Engineering, Vol. 26 No. 6, pp. 2319-2329 (November 2010)

A Forward-Backward Secure Signature Scheme*

DAI-RUI LIN, CHIH-I WANG AND D. J. GUAN
 Department of Computer Science and Engineering
National Sun Yat-sen University
Kaohsiung, 804 Taiwan

In this paper, we propose a method for enhancing the security of Abdalla and Reyzin¡¦s forward secure signature scheme by introducing a backward-secure detection. In the proposed method, we employed the hash chain technique in the forward-secure signature scheme. With this, we can achieve not only forward security but also backward security for digital signatures.

Keywords: forward-secure, backward-secure, digital signatures, GQ signatures, one-way hash chain

Full Text (¥þ¤åÀÉ) Retrieve PDF document (201011_24.pdf)

Received December 2, 2008; revised March 23, 2009; accepted July 10, 2009.
Communicated by Wen-Guey Tzeng.
* This work was supported in part by TWISC@NCKU under Grant No. NSC 94-3114-P-006-001-Y. A preliminary version of this paper appears in the IEEE CS proceedings of the 2nd International Conference on Information Security and Assurance, 2008.