An Enhanced Fault-Tolerant Conference Key Agreement Protocol
نویسنده
چکیده
Establishing a secure communication of Internet conferences for participants is very important. Before starting the conference, all the participants establish a common conference key to encrypt/decrypt communicated messages. It enables participants to exchange the secure messages. Nevertheless, in the conference, if there are any malicious participants who may try to upset the key generation process causing other legal participants to obtain a different conference key. In this article, we propose an improved conference key agreement with fault-tolerant capability. The proposed scheme can filter malicious participants at the beginning of the conference to ensure that all participants obtain the same conference key. Compare with other schemes, our scheme is more secure and efficient than others. Keywords—Conference key, Diffie-Hellman protocol, key agreement, fault tolerance.
منابع مشابه
A Practical and Secure-Fault-Tolerant Conferenc-Key Agreement Protocol
When a group of people wants to communicate securely over an open network, they run a conference-key protocol to establish a common conference key K such that all their communications thereafter are encrypted with the key K. In this paper we propose a practical and provably secure fault-tolerant conference-key agreement protocol under the authenticated broadcast channel model. The adversary tha...
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Recently, Tzeng proposed a provably secure and fault-tolerant conference-key agreement protocol. It requires only a constant number of rounds to establish a conference key among all honest participants. This article will show that Tzeng’s protocol does not offer forward secrecy. We say that a conference-key agreement protocol offers forward secrecy if the long-term secret key of any participant...
متن کاملA conference key agreement protocol with fault-tolerant capability
Article history: Secure communication is o Received 24 July 2007 Received in revised form 5 March 2008 Accepted 4 May 2008 Available online 18 May 2008
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تاریخ انتشار 2015