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Journal of Information Science and Engineering, Vol. 27 No. 4, pp. 1303-1313 (July 2011)

Group Oriented Renewal of Secrets and Its Application to Secure Multicast*

Department of Computer Architecture and Electronics
University of Almeria
Almeri, 04120 Spain

This paper introduces a multicast method for renewing secrets which are shared by a set of hosts. The method is centralized, secure, efficient, scalable to a reasonable size and compatible with any multicast topology configuration underneath. It can be used to achieve privacy in a centralized multicast overlay. Additionally, the method can be used to renew an asymmetric key pair when a cryptosystem based on discrete logarithm is used. Knowledge of the public key is then restricted to the group it is communicated to. Security and scalability are discussed, and a comparison with other well-known alternatives is shown.

Keywords: communication/networking and information technology, network operations, data encryption, secure group communication, multicast

Full Text () Retrieve PDF document (201107_07.pdf)

Received January 27, 2010; revised June 13 & September 7, 2010; accepted September 28, 2010.
Communicated by Chin-Laung Lei.
* J. A. M. Naranjo and L. G. Casado are supported by the Spanish Ministry of Science and Innovation (TIN 2008-01117), L. G. Casado was also supported by funds of Junta de Andalucia (P08-TIC-3518); J. A. Lopez- Ramos was supported by the Spanish Ministry of Science and Innovation (TEC2009-13763-C02-02) and Junta de Andalucia (FQM 0211).