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A Practical Evaluation of a High-Security Energy-Efficient Gateway for IoT Fog Computing Applications
Manuel Suárez-Albela1, Tiago M Fernández-Caramés2, Paula Fraga-Lamas3
1Department Computer Engineering, Faculty of Computer Science, Universidade da Coruña, 15071 A Coruña, Spain. m.albela@udc.es.
Sensors (Basel, Switzerland)
|August 30, 2017
Summary
Elliptic Curve Cryptography (ECC) offers superior security for Internet of Things (IoT) gateways in fog computing, reducing power consumption by up to 50% and doubling data throughput compared to Rivest-Shamir-Adleman (RSA).
Area of Science:
- Cybersecurity
- Computer Networks
- Internet of Things (IoT)
Background:
- Fog computing extends cloud capabilities to the network edge, enabling new IoT applications.
- Securing IoT gateways is critical, especially in resource-constrained, off-grid environments.
- Traditional security protocols like Transport Layer Security (TLS) often rely on RSA, which is not ideal for IoT due to key size and scalability.
Purpose of the Study:
- To analyze and compare the power consumption and data throughput of Rivest-Shamir-Adleman (RSA) and Elliptic Curve Cryptography (ECC) for securing IoT gateways in fog computing.
- To evaluate the effectiveness of ECC as a lightweight and scalable alternative to RSA for IoT security.
- To assess the impact of data compression algorithms on IoT gateway performance.
Main Methods:
- A testbed of IoT gateways was used to measure the power consumption and data throughput of RSA and ECC.
- Comparative analysis of cryptographic algorithms at equivalent security levels.
- Frame temporal analysis of Ethernet packets to corroborate findings.
- Evaluation of current data compression algorithms for small IoT payloads.
Main Results:
- Elliptic Curve Cryptography (ECC) demonstrated significantly lower power consumption (up to 50% reduction) and higher data throughput (doubling RSA's performance) compared to RSA in the tested fog computing scenario.
- Data compression algorithms did not provide significant benefits in terms of throughput or power consumption for small IoT application payloads.
- ECC is a more suitable cryptographic solution for resource-constrained IoT gateways.
Conclusions:
- ECC is a superior choice over RSA for securing IoT gateways in fog computing environments, particularly those with limited power resources.
- The findings support the adoption of ECC for enhanced security and efficiency in critical IoT applications.
- Data compression is not recommended for typical IoT communication payloads in this context.
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