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PARADIS: Wireless Device Identification with Radiometric Signatures. Vladimir Brik , Suman Banerjee , Marco Gruteser , Sangho Oh. Present by Taodun Li. Problem Statement. Device identity management is important for network security MAC address in a frame is easy to forge

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PARADIS: Wireless Device Identification with Radiometric Signatures


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    1. PARADIS: Wireless Device Identification with Radiometric Signatures Vladimir Brik, SumanBanerjee, Marco Gruteser, Sangho Oh Present by Taodun Li

    2. Problem Statement • Device identity management is important for network security • MAC address in a frame is easy to forge • Solution for wired network cannot be adopted

    3. Previous Solution • 802.11 WLAN administrators rely on various cryptographic mechanisms for wireless device identity management and access control

    4. Solution in This Paper No two NICs are identical Radiometric identity can be observed in its radio transmissions and be used to discern different NICs

    5. PARADIS Schematic

    6. Overview of Modulation Mechanisms The 4 symbols of QPSK on I/Q plane Modulation errors

    7. Modulation Error Metrics • EVM is not used by PARADIS • Normalize data before applying a classification algorithm

    8. Get Signature • PARADIS-KNN - Outlier: - Discards outliers one by one until only half of the training signatures remain • PARADIS-SVM - Calculate a special matrix WA - WA ∙S-b >0 if S is from a frame sent by A - WA ∙S-b <0 Otherwise

    9. Identification For both KNN and SVM: • Return the identity that appears most frequently among the computed best matches • In case of a tie, the identity with the greatest cumulative similarity is chosen

    10. Evaluation Comparison of PARADIS and other studies

    11. Evaluation Performance of PARADIS-SVM

    12. Evaluation Performance of PARADIS-KNN

    13. Conclusion • PARADIS outperforms the other state-of-art techniques. • PARADIS is capable of achieving accuracy in excess of 99% • PARADIS is resilient to mobility, varying noise and hardware aging

    14. Thank you!