Authenticating operation-based history in collaborative systems

Truong, Hien Thi Thu; Ignat, Claudia-Lavinia; Molli, Pascal

doi:10.1145/2389176.2389197

Cited by 3 publications

(4 citation statements)

References 41 publications

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“…A solution based on authenticators for detecting log tampering can be adopted, log tampering being detected at time of synchronization before the log is accepted by receivers [32].…”

Section: Trust Assessment In Contract-based Multi-synchronous Collabo...mentioning

confidence: 99%

Users trust assessment based on their past behavior in large scale collaboration

Ignat

Dang

2021

2021 IEEE 17th International Conference on Intelligent Computer Communication and Processing (ICCP)

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In a large scale peer-to-peer collaboration where control over data is given to users who can decide with whom to share their data, a main challenge is how to compute trust in the collaborators. In this paper we show how to automatically compute users trust according to their past behavior during the collaboration in order to be able to predict their future behavior. We focus on two use cases: contract-based multi-synchronous collaboration and trust game from game theory. We show that computing trust from a single interaction between two users depends on the application domain, but that a general methodology for aggregating trust during the successive interactions between two users can be applied for both use cases.

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“…A solution based on authenticators for detecting log tampering can be adopted, log tampering being detected at time of synchronization before the log is accepted by receivers [32].…”

Section: Trust Assessment In Contract-based Multi-synchronous Collabo...mentioning

confidence: 99%

Users trust assessment based on their past behavior in large scale collaboration

Ignat

Dang

2021

2021 IEEE 17th International Conference on Intelligent Computer Communication and Processing (ICCP)

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“…Authenticated logs [19,20] make misbehaviors evident. An authenticated log contains all participants' contributions along with their dependencies.…”

Section: Vfjc Log As Threat Mitigationmentioning

confidence: 99%

Prunable Authenticated Log and Authenticable Snapshot in Distributed Collaborative Systems

Elvinger

Oster

Charoy

2018

2018 IEEE 4th International Conference on Collaboration and Internet Computing (CIC)

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In distributed collaborative systems, participants maintain a replicated copy of shared documents. They edit their own copy and then share their modifications without any coordination. Copies follow successions of divergence and convergence. Convergence is a liveness property of collaborative systems. Some malicious participants may find an advantage to make the collaboration fail. To that end, they can preclude convergence of the copies. To protect convergence of copies, participants can exploit an authenticated log of modifications. New participants have to retrieve the entire log in order to contribute. Unfortunately, the cost of joining a collaboration increases with the size of this log. Causal Stability allows to prune authenticated logs in a static collaborative group without any malicious participants. In this paper, we first tailor Causal Stability to dynamic groups in presence of malicious participants. We then propose a mechanism to verify the consistency of a pruned log and a mechanism to authenticate a snapshot from a pruned log.

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“…We have proposed using authenticators for detecting log tampering. 50 Log tampering is detected at time of synchronization before the log is accepted by receivers. (3) How to use log auditing result and treat data resulted from misused actions?…”

Section: Auditing Principlesmentioning

confidence: 99%

“…Our solution about the construction and verification of authenticators to secure log are presented in our previous work. 50 Authenticators prevent re-ordering of log events and therefore causality is preserved. If log was tampered, receiving site might discard it and the trust level of the site that misbehaved would be decremented.…”

Section: Correctness Of C-ppc Modelmentioning

confidence: 99%

A Contract-Extended Push-Pull-Clone Model for Multi-Synchronous Collaboration

Truong

Ignat

Molli

2012

Int. J. Coop. Info. Syst.

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International audienceIn multi-synchronous collaboration users replicate shared data, modify it and redistribute modified versions of this data without the need of a central authority. However, in this model, no usage restriction mechanism was proposed to control what users can do with the data after it has been released to them. In this paper, we extend the multisynchronous collaboration model with contracts that express usage restrictions and that are checked a posteriori by users when they receive the modified data. We propose a merging algorithm that deals not only with changes on data but also with contracts. A log auditing protocol is used to detect users who do not respect contracts and to adjust user trust levels. Our contract-based model was implemented and evaluated by using PeerSim simulator

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Authenticating operation-based history in collaborative systems

Cited by 3 publications

References 41 publications

Users trust assessment based on their past behavior in large scale collaboration

Users trust assessment based on their past behavior in large scale collaboration

Prunable Authenticated Log and Authenticable Snapshot in Distributed Collaborative Systems

A Contract-Extended Push-Pull-Clone Model for Multi-Synchronous Collaboration

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