Olsan Ozbay (Dept. ECE, University of Maryland), Yuntao Liu (ISR, University of Maryland), Ankur Srivastava (Dept. ECE, ISR, University of Maryland)

Electromagnetic (EM) side channel attacks (SCA) have been very powerful in extracting secret information from hardware systems. Existing attacks usually extract discrete values from the EM side channel, such as cryptographic key bits and operation types. In this work, we develop an EM SCA to extract continuous values that are being used in an averaging process, a common operation used in federated learning. A convolutional neural network (CNN) framework is constructed to analyze the collected EM data. Our results show that our attack is able to distinguish the distributions of the underlying data with up to 93% accuracy, indicating that applications previously considered as secure, such as federated learning, should be protected from EM side-channel attacks in their implementation.

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Security-Performance Tradeoff in DAG-based Proof-of-Work Blockchain Protocols

Shichen Wu (1. School of Cyber Science and Technology, Shandong University 2. Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education), Puwen Wei (1. School of Cyber Science and Technology, Shandong University 2. Quancheng Laboratory 3. Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education), Ren Zhang (Cryptape Co. Ltd. and…

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LARMix: Latency-Aware Routing in Mix Networks

Mahdi Rahimi (KU Leuven), Piyush Kumar Sharma (KU Leuven), Claudia Diaz (KU Leuven)

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IdleLeak: Exploiting Idle State Side Effects for Information Leakage

Fabian Rauscher (Graz University of Technology), Andreas Kogler (Graz University of Technology), Jonas Juffinger (Graz University of Technology), Daniel Gruss (Graz University of Technology)

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WIP: Towards Privacy Compliance by Design in the Matter...

Yichen Liu (Indiana University Bloomington), Jingwen Yan (Clemson University), Song Liao (Texas Tech University), Long Cheng (Clemson University), Luyi Xing (Indiana University Bloomington)

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