On April 25, we organized a scientific seminar titled “Detection of Unauthorized Data Alteration in Homomorphically Encrypted Process Control.” Diana Dzurková, a PhD student at the Slovak University of Technology in Bratislava, led the seminar, which was organized within the framework of the FrontSeat project as part of the “Research Seminar on Smart Cybernetics” series.
Abstract:
Encryption within process control is a well-known phenomenon that secures data throughout different operational activities. While more popular encryption techniques assure data security during transmission, homomorphic encryption protects data privacy throughout the assessment process. Despite substantial privacy protection, security flaws persist in cloud-based contexts. An important but frequently neglected concern is the possibility of ciphertext alterations, which may be induced by a variety of circumstances. These changes may be the consequence of unapproved changes made by the cloud service provider, outside hostile assaults, or inadvertent mistakes made during data processing and analysis. Such manipulations threaten the integrity and safety of systems that rely on outsourced control assessment. This session seeks to investigate these security difficulties by identifying possible weaknesses and display an algorithm for the CKKS cryptosystem, since it is the most widely used in process control applications, that can detect unauthorized adjustments to the encrypted data. Our technique increases the safety of encrypted process control systems, guaranteeing that computation results remain trustworthy despite possible risks in the cloud environment. Through experimental validation and punctual analysis, we show how well our approach protects homomorphic encryption systems against unwanted ciphertext tampering.
This project has received funding from the European Union’s Horizon under grant no. 101079342 (Fostering Opportunities Towards Slovak Excellence in Advanced Control for Smart Industries).
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