Acceleration of Feature Extraction for Real-Time Analysis of Encrypted Network Traffic
2019 IEEE 22nd International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS)(2019)
摘要
With the growing amount of encrypted network traffic, it is important to have tools for the analysis and classification of encrypted network data. Encrypted network traffic is usually analysed by statistical methods because Deep Packet Inspection or pattern matching is not applicable. However, the statistical methods are usually designed to work offline on already captured network traffic. For real-time analysis, hardware acceleration is needed to achieve wire-speed 10 Gbps throughput. Therefore, we focus on real-time monitoring of encrypted network traffic and propose a new acceleration method to extract features from encrypted network data. Approximate computing is used to speed up the computation of entropy for the input data stream and to reduce FPGA logic utilization. As can be seen in the results, the precision of classification has decreased only by 0.1 to 0.2. Moreover, proposed hardware architecture has very low FPGA logic utilization and can operate on high frequency.
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关键词
Entropy,Feature extraction,Payloads,Cryptography,Real-time systems,Acceleration,Computer architecture
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