Chaotic Encryption Applied to Optical Ethernet in Industrial Control Systems

• URL: http://arxiv.org/abs/2401.15039v1
• Date: Fri, 26 Jan 2024 18:05:29 GMT
• Title: Chaotic Encryption Applied to Optical Ethernet in Industrial Control Systems
• Authors: Adrián Pérez-Resa, Miguel Garcia-Bosque, Carlos Sánchez-Azqueta, Santiago Celma,
• Abstract summary: Ethernet has become an alternative technology for the field buses traditionally used in industrial control systems and distributed measurement systems. Due to the absence of a standard that provides security at the physical layer of optical Ethernet links, the main motivation of this paper is to introduce encryption in Ethernet 1000Base-X standard.
• Score: 0.7499722271664144
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In the past decades, Ethernet has become an alternative technology for the field buses traditionally used in industrial control systems and distributed measurement systems. Among different transmission media in Ethernet standards, optical fiber provides the best bandwidth, excellent immunity to electromagnetic interference, and less signal loses than other wired media. Due to the absence of a standard that provides security at the physical layer of optical Ethernet links, the main motivation of this paper is to propose and implement the necessary modifications to introduce encryption in Ethernet 1000Base-X standard. This has consisted of symmetric streaming encryption of the 8b10b symbols flow at physical coding sublayer level, thanks to a keystream generator based on chaotic algorithm. The overall system has been implemented and tested in an field programmable gate array and Ethernet traffic has been encrypted and transmitted over an optical link. The experimental results show that it is possible to cipher traffic at this level and hide the complete Ethernet traffic pattern from passive eavesdroppers. In addition, no space overhead is introduced in data frames during encryption, achieving the maximum throughput.

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