Key escrow schemes with sliding window for privacy-aware anomaly detection system

Requirements for a traffic monitoring system can be very demanding as both privacy and performance aspects have to be taken into account jointly. Moreover, the legislation sets forth strict rules that must also be met. Various cryptographic primitives provide invaluable tools for realising privacy enforcing mechanisms in such a system with respect to the above mentioned goals. In this paper, we consider an arbitrary traffic anomaly detection system consisting of two stages. The first stage pre-processes the monitored traffic with both data rate reduction and privacy protection in mind. The second stage is in charge of the final analysis and storing the relevant information. In particular, the privacy sensitive information is encrypted on per flow basis by the first stage, so that the second stage cannot access any flow without an appropriate key, which is given only when there is a strong reason to do so. In this setting, we study a sliding window type of mechanism for escrowing...

• Type: Conference
• Year: 2010
• Where: EDBTW
• Authors: Esa Hyytiä, Ivan Gojmerac, Simone Teofili, Giuseppe Bianchi
• Keywords: EDBTW 2010, Privacy, Privacy Enforcing Mechanisms, Software Engineering, first Stage