Secure Measurement Instruments Based on Trusted Execution Environments

• Eduardo V. A. Martins INMETRO
• Eduardo G. Machado INMETRO
• Gustavo de J. Martins INMETRO
• Wilson de S. Melo Jr. INMETRO

DOI: https://doi.org/10.5753/sbseg_estendido.2024.243374

Abstract

We present an ongoing work that addresses a secure architecture for distributed measurement systems. In this paper, we explain how the sensing phase operates, which involves digital signatures in a trusted execution environment to ensure the authenticity of sensors in these systems. We evaluated the execution time of digital signatures for different key sizes, based on RSA. The time required for key generation and signing was 1 second for 1024 bits, 4 seconds for 2048 bits, and 45 seconds for 4096 bits. The next steps involve using lighter cryptographic algorithms and improving the existing algorithm.

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