A Comparative Evaluation of Symmetric Encryption Algorithms for Resource-Constrained Devices

• Mayksuel Ramalho UFF
• Gabriel S. de Oliveira UFF
• Nicholas Neves UFF
• Rafael Porto UFF
• Victor Afonso M. Sobral UFF
• Marcos Rezende Prefeitura Municipal de Niterói
• Dianne S. V. Medeiros UFF

DOI: https://doi.org/10.5753/wperformance.2024.2530

Abstract

Data security in the Internet of Things is crucial for protecting both devices and the data they transmit over the network. Nevertheless, security is often overlooked in this context, leaving systems vulnerable to cyber attacks that can compromise information confidentiality and integrity. This work focuses on a use case of a remote environmental variable monitoring system for disaster prevention, in which information must be confidential and intact. The AES (Advanced Encryption Standard) and Speck cryptographic algorithm families are evaluated in both traditional and memory-optimized implementations, targeting data confidentiality. The algorithms are assessed through practical experiments on a resource-constrained hardware platform. Transmission throughput, estimated energy consumption, execution time, and memory usage are evaluated. Results show that the Speck family executes more quickly, has lower estimated energy consumption, and occupies less memory space.

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