¡@
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*
J. A. M. NARANJO, L. G. CASADO AND J. A. LOPEZ-RAMOS
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
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).