Privacy-Preserving Lawful Contact Chaining
نویسندگان
چکیده
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.
منابع مشابه
Open, privacy-preserving protocols for lawful surveillance
The question of how government agencies can acquire actionable, useful information about legitimate but unknown targets without intruding upon the electronic activity of innocent parties is extremely important. We address this question by providing experimental evidence that actionable, useful information can indeed be obtained in a manner that preserves the privacy of innocent parties and that...
متن کاملCatching Bandits and Only Bandits: Privacy-Preserving Intersection Warrants for Lawful Surveillance
Motivated in part by the Snowden revelations, we address the question of whether intelligence and lawenforcement agencies can gather actionable, relevant information about unknown electronic targets without conducting dragnet surveillance. We formulate principles that we believe effective, lawful surveillance protocols should adhere to in an era of big data and global communication networks. We...
متن کاملMultiple Objectives of Lawful-Surveillance Protocols
In recent work on open, privacy-preserving, accountable surveillance, we have proposed the use of cryptographic protocols that enable law-enforcement and intelligence agencies to obtain actionable information about targeted users of mass-communication systems without intruding on the privacy of untargeted users. Our suggestion that appropriate technology, combined with sound policy and the rule...
متن کاملA centralized privacy-preserving framework for online social networks
There are some critical privacy concerns in the current online social networks (OSNs). Users' information is disclosed to different entities that they were not supposed to access. Furthermore, the notion of friendship is inadequate in OSNs since the degree of social relationships between users dynamically changes over the time. Additionally, users may define similar privacy settings for their f...
متن کاملLawful Interception of the Internet
This paper describes the state of Lawful Interception of the Internet and compares it with Lawful Interception of access networks. Lawful Interception is the process of secretly intercepting communications between parties of interest to Law Enforcement agencies. Internet interception is both more difficult and much more immature than access network interception. Refusal by the main standards bo...
متن کامل