Text encryption using Sosemanuk and Harris Hawks optimization by laser communication

Area of Science:

• Computer Science
• Electrical Engineering
• Cryptography

Background:

• The proliferation of Internet of Things (IoT) and embedded devices necessitates secure and energy-efficient communication protocols.
• Conventional cryptographic algorithms often exceed the computational capacity of resource-constrained devices.

Purpose of the Study:

• To propose a lightweight encryption system for resource-constrained devices.
• To enhance communication security and energy efficiency in IoT applications.

Main Methods:

• A hybrid approach combining the Sosemanuk stream cipher with physical layer encoding.
• Session-dependent key candidates generated using the Harris Hawks Optimization algorithm.
• Encryption followed by International Morse code encoding for optical wireless communication via a laser diode.

Main Results:

• The system demonstrates high randomness and a 50.35% avalanche effect, indicating strong cryptographic properties.
• Low bit dependency correlation (0.0366) confirmed by NIST SP 800-22 statistical tests.
• Achieved an encryption throughput of 82.78 KB/s, proving computational efficiency.

Conclusions:

• The proposed system offers a feasible and secure solution for low-power IoT devices.
• The integration of lightweight cryptography and optical communication enhances device security and extends operational life.