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A Group Key Agreement Scheme Revisited
2008 The Fourth International Conference on Information Assurance and Security, 2008In PKC'2004, a constant-round group key exchange protocol is proposed. It takes advantage of the properties of the ElGamal encryption scheme combined with the standard secret sharing technique. In this paper, we show that the scheme can be greatly simplified because the standard secret sharing technique does not work well.
Zhengjun Cao, Lihua Liu 0001
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Key Exposure Resistant Group Key Agreement Protocol
2021With the development of the Internet and computer science, the demand for collaboration over the Internet is constantly increasing. The group key agreement (GKA) protocol has been a desirable candidate for this demand. However, the possibility that some parties in the GKA protocol may be tampered with by the adversary leads to the stronger requirement ...
Tianqi Zhou +4 more
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Flexible Robust Group Key Agreement
IEEE Transactions on Parallel and Distributed Systems, 2011A robust group key agreement protocol (GKA) allows a set of players to establish a shared secret key, regardless of network/node failures. Current constant-round GKA protocols are either efficient and nonrobust or robust but not efficient; assuming a reliable broadcast communication medium, the standard encryption-based group key agreement protocol can
Stanislaw Jarecki +2 more
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Secure key agreement for group communications
International Journal of Network Management, 2001AbstractA secure key agreement protocol for group communications is proposed in this paper, which ensures the authenticity of group members and the privacy of group messages, and provides the properties of perfect forward and backward privacy. In a group session, the common key is collaboratively established by all participants, hence the overhead of ...
Wen-Her Yang, Shiuh-Pyng Shieh
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Authenticated Group Key Agreement for Multicast
2006Secure multicast communication provides an efficient way to deliver data to a large group of recipients. Scalability, efficiency and authenticity are the key challenges for secure multicast. In this paper, we propose a novel group key agreement scheme called logical identity hierarchy(LIH) for multicast to support secure communications for large and ...
Liming Wang 0001, Chuan-Kun Wu
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On The Security of a Group Key Agreement Protocol
The Computer Journal, 2007In this paper the author shows that the group key agreement protocol proposed by Tseng suffers from a number of serious security vulnerabilities.
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Group-Based Authentication and Key Agreement
Wireless Personal Communications, 2010This paper presents an authentication and key agreement protocol to streamline communication activities for a group of mobile stations (MSs) roaming from the same home network (HN) to a serving network (SN). In such a roaming scenario, conventional schemes require the SN to interact with the HN for authenticating respective MSs, at the cost of repeated
Yu-Wen Chen +3 more
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Continuous Group Key Agreement with Active Security
2020A continuous group key agreement (CGKA) protocol allows a long-lived group of parties to agree on a continuous stream of fresh secret key material. CGKA protocols allow parties to join and leave mid-session but may neither rely on special group managers, trusted third parties, nor on any assumptions about if, when, or for how long members are online ...
Joël Alwen +3 more
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Tuning a two-round group key agreement
International Journal of Information Security, 2014In 2007, Bohli et al. (Int J Inf Secur 6:243---254, 2007) proposed a two-round group key agreement protocol in the random oracle model, which in addition to semantic security offers strong entity authentication and a security guarantee against malicious insiders.
Weizheng Gao +2 more
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Post-quantum Group Key Agreement Scheme
2020Progress in quantum technologies forces the development of new cryptographic primitives that are resistant to attacks of an adversary with a quantum computer. A large number of key establishment schemes have been proposed for two participants, but the area of group post-quantum key establishment schemes has not been studied a lot.
Julia Bobrysheva, Sergey Zapechnikov
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