Confidentiality attacks against encrypted control systems

Encrypted control systems were introduced to enhance the security of cyber-physical systems, which outsource control action computations to a third-party platform. To protect the confidentiality of the transmitted data, homomorphic encryption schemes are particularly appealing for their capability o...

Full description

Saved in:
Bibliographic Details
Published inCyber-physical systems Vol. 9; no. 3; pp. 224 - 243
Main Authors Naseri, Amir Mohammad, Lucia, Walter, Youssef, Amr
Format Journal Article
LanguageEnglish
Published Taylor & Francis 03.07.2023
Subjects
cyber-physical systems security
Encrypted control systems
homomorphic encryption
Online AccessGet full text

Cover

More Information
Summary:Encrypted control systems were introduced to enhance the security of cyber-physical systems, which outsource control action computations to a third-party platform. To protect the confidentiality of the transmitted data, homomorphic encryption schemes are particularly appealing for their capability of allowing computations on encrypted data. By considering the popular ElGamal and Paillier encryption schemes, this paper shows that encrypted control systems are vulnerable to attackers leveraging the inherently small domains of the plaintext data in control systems and the randomisation process required to make the utilised ciphers semantically secure. Finally, we present some countermeasures to defend against these attacks.
ISSN:2333-5777
2333-5785
DOI:10.1080/23335777.2022.2051209