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Privacy-Preserving Lawful Contact Chaining

Segal, Aaron
•
Feigenbaum, Joan
•
Ford, Bryan Alexander  
October 24, 2016
Workshop on Privacy in the Electronic Society (WPES)

How can government agencies acquire actionable, useful information about legitimate targets, while preserving the privacy of innocent parties and holding government agencies accountable? Towards understanding this crucial issue, we present the first privacy-preserving protocol for contact chaining, an operation that law-enforcement and intelligence agencies have used effectively. Our experiments suggest that a three-hop, privacy-preserving graph traversal producing 27,000 ciphertexts can be done in under two minutes.

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wpes16-chaining.pdf

Type

Postprint

Access type

openaccess

License Condition

CC BY-NC-ND

Size

253.45 KB

Format

Adobe PDF

Checksum (MD5)

de67f31f35ed7b39f7de9348f8013f18

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