Security weakness of Tseng’s fault-tolerant conference-key agreement protocol

Lee, Sang-Ho; Kim, Jong; Hong, Sung Je

doi:10.1016/j.jss.2009.02.006

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…To overcome this drawback, fault-tolerant GKA protocols [10,[20][21][22][23][24] were developed to assure that all malicious participants are excluded from the set of participants and that no honest participants are excluded. Tzeng [20] proposes a polynomial-based method to realize fault-tolerance which requires that each participant create n n-power polynomials, where n is the number of participants, this process results in massive computational cost.…”

Section: Introductionmentioning

confidence: 99%

An efficient fault-tolerant group key agreement protocol

Zhao

2010

Computer Communications

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Section: Introductionmentioning

confidence: 99%

An efficient fault-tolerant group key agreement protocol

Zhao

2010

Computer Communications

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“…First, we show that ICKAP, together with ACKA operations, provides the same security properties and the same resistance against known attacks in and . Moreover, we prove that ACKA operations are resistant against the attack proposed in .…”

Section: Security Analysismentioning

confidence: 71%

“…The major vulnerability of dynamic groups is shown in . They proposed several attack scenarios for the protocol in .…”

Section: Security Analysismentioning

confidence: 99%

An improved conference‐key agreement protocol for dynamic groups with efficient fault correction

Ermis

Bahtityar²,

Anarım

et al. 2014

Security Comm Networks

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The pervasive usage of the Internet has made secure group communications a significant issue. Conference-key agreement protocols provide secure group communications with lower computational cost. Providing key agreements and updates of dynamic groups in an efficient manner is a significant challenge for conference-key agreement protocols. Auxiliary key agreement operations are needed to solve the challenge. In this paper, we propose an improved conference-key agreement protocol, called Dynamic Conference-Key Agreement Protocol, that consists of Initial Conference-Key Agreement Protocol and Auxiliary Conference-Key Agreement operations. Dynamic Conference-Key Agreement Protocol has operations to handle dynamic groups. The proposed protocol has better fault correction and provides the same security level with the existing ones.

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“…Dynamic group operations enables group key agreement protocols to be more efficient during re-generation of group keys. In order to overcome security weaknesses stated in [19], a protocol must ensure forward and backward confidentiality properties. Forward confidentiality property assures that further group keys cannot be computed by a participant who has left the group.…”

Section: Security Of Join and Leave Operationsmentioning

confidence: 99%

Dynamic Group Key Agreement for Resource-constrained Devices Using Blockchains

Taçyıldız

Ermis

Gür

et al. 2020

Lecture Notes in Computer Science

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Dynamic group key agreement (DGKA) protocols are one of the key security primitives to secure multiparty communications in decentralized and insecure environments while considering the instant changes in the communication group. However, with the ever-increasing number of connected devices, traditional DGKA protocols have performance challenges since each member in the group has to make several computationally intensive operations while verifying the keying materials in order to compute the resulting group key. To overcome this issue, we propose a new approach for DGKA protocols by utilizing Hyperledger Fabric framework as a blockchain platform. To this end, we migrate the communication and verification overhead of DGKA participants to the blockchain network in our developed scheme. This paradigm allows a flexible DGKA protocol that considers resource-constrained entities and trade-offs regarding distributed computation. According to our performance analysis, participants with low computing resources can efficiently utilize our protocol. Furthermore, we have demonstrated that our protocol has the same security features as other comparable protocols in the literature.

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Security weakness of Tseng’s fault-tolerant conference-key agreement protocol

Cited by 10 publications

References 19 publications

An efficient fault-tolerant group key agreement protocol

An efficient fault-tolerant group key agreement protocol

An improved conference‐key agreement protocol for dynamic groups with efficient fault correction

Dynamic Group Key Agreement for Resource-constrained Devices Using Blockchains

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