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PARADIS: Wireless Device Identification with Radiometric Signatures

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Presentation on theme: "PARADIS: Wireless Device Identification with Radiometric Signatures"— Presentation transcript:

1 PARADIS: Wireless Device Identification with Radiometric Signatures
Vladimir Brik, Suman Banerjee, 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 WLAN administrators rely on various cryptographic mechanisms for wireless device identity management and access control

4 No two NICs are identical
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 Comparison of PARADIS and other studies
Evaluation Comparison of PARADIS and other studies

11 Performance of PARADIS-SVM
Evaluation Performance of PARADIS-SVM

12 Performance of PARADIS-KNN
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!


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