Intrusion detection system for encrypted networks using secret-sharing schemes

Goh, Vik Tor, Zimmermann, Jacob, & Looi, Mark (2010) Intrusion detection system for encrypted networks using secret-sharing schemes. In International Journal of Cryptology Research, Malaysian Society for Cryptology Research, Hotel Equatorial, Melaka, Malaysia.

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Secret-sharing schemes describe methods to securely share a secret among a group of participants. A properly constructed secret-sharing scheme guarantees that the share belonging to one participant does not reveal anything about the shares of others or even the secret itself. Besides the obvious feature which is to distribute a secret, secret-sharing schemes have also been used in secure multi-party computations and redundant residue number systems for error correction codes. In this paper, we propose that the secret-sharing scheme be used as a primitive in a Network-based Intrusion Detection System (NIDS) to detect attacks in encrypted networks. Encrypted networks such as Virtual Private Networks (VPNs) fully encrypt network traffic which can include both malicious and non-malicious traffic. Traditional NIDS cannot monitor encrypted traffic. Our work uses a combination of Shamir's secret-sharing scheme and randomised network proxies to enable a traditional NIDS to function normally in a VPN environment. In this paper, we introduce a novel protocol that utilises a secret-sharing scheme to detect attacks in encrypted networks.

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ID Code: 33150
Item Type: Conference Paper
Refereed: Yes
Keywords: intrusion detection, secret-sharing, Shamir, VPN, encrypted networks
ISSN: 1985-5753
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > COMPUTER SOFTWARE (080300) > Computer System Security (080303)
Divisions: Past > Schools > Computer Science
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Copyright Owner: Copyright 2010 [please consult the authors]
Deposited On: 15 Jul 2010 21:36
Last Modified: 29 Feb 2012 14:18

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