On Trust Establishment in Mobile Ad-Hoc Networkshelmy/cis6930-09/Mukul_Group1_TrustModel.pdfOn Trust...
Transcript of On Trust Establishment in Mobile Ad-Hoc Networkshelmy/cis6930-09/Mukul_Group1_TrustModel.pdfOn Trust...
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On Trust Establishment in Mobile
Ad-Hoc Networks
Laurent Eschenauer, Virgil D. Gligor and John Baras
ECE Department, University of Maryland
Proceedings of the Security Protocols Workshop (2002)
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Trust – reliance on the integrity, strength, ability, surety, etc., of a person or thing.
Real Life
• Trusting a Colleague
Computer Network
• Trusting a Node
• Trusting a Colleague’s Trust
about another Colleague
• Trusting a Node’s Trust
about another Node
TransitivityTransitivityA -> B -> Y
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How Things work in Internet
Internet
• Certification Authority certifies
someone.
• That Certificate is stored in a
Real Life
• Your Trusted Friend trusts
someone
• That Certificate is stored in a
Directory Server
• People contact the Directory
Server to fetch that Certificate
in order to establish “Trust” on
“Someone”
• “Someone” contacts you
with Reference to your
“Trusted Friend”
• You call your “Trusted
Friend” to confirm his Trust
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What’s Odd and What’s Not
Similarity
• Transitivity of Trust Establishment
Oddity
• Trust Establishment without
a Trust Infrastructure
• Uncertainty in Trust Establishment
• Guaranteed Connectivity to Trust-Infrastructure Servers
• Short-lived, Fast, and On-
line-only Trust
Establishment
• Trust Establishment with
Incomplete Evidence
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What’s Required in a MANET
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Scenario 1
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Scenario 2
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Scenario 3
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Solution Proposed
Generation of Trust EvidenceGeneration of Trust Evidence
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Solution Proposed
Distribution of Trust EvidenceDistribution of Trust Evidence
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Solution Proposed
Application of Evaluation Metric to Body of EvidenceApplication of Evaluation Metric to Body of Evidence
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Conclusion
Pros
• Comprehensive comparison
of Internet and MANET
Trust Model.
Cons
• No Implementation
• Freenet Modification Idea
• Nice Explanation of
Transitivity concept.
• Discussed Scenarios are
Practical.
• Freenet Modification Idea
not complete.
• No Simulations
• No Experiments
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Other Papers
Establishing Trust In Pure Ad-hoc NetworksEstablishing Trust In Pure Ad-hoc Networks
Cooperation in Wireless Ad Hoc NetworksCooperation in Wireless Ad Hoc Networks
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Fitting All Pieces Together
Reno Varghese - GeoCastReno Varghese - GeoCast
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Fitting All Pieces Together
Pavneet Singh - LocalizationPavneet Singh - Localization
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Fitting All Pieces Together
Kunal Sawlani- ArchitectureKunal Sawlani- Architecture
Mukul Sharma – Trust ModelMukul Sharma – Trust Model
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Process Model
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Trust Hierarchy
Assured Help Trusted Node
GeoCast/Flood
Second/Third Hop SOS Relay
Acquain + Eigen Match
Stranger + Eigen Match
Stranger + Eigen
Mismatch
Acquain + Eigen
Mismatch
Large Node Density
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System View
On Drawing BoardOn Drawing Board
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Thanks!!
Questions or Comments!!Questions or Comments!!