This thesis presents an in-depth exploration of designing a cybersecurity system for satellite communication, addressing cyberthreats as the space industry transitions from security by obscurity in mission specific designs to the use of mass-produced components.

To counteract these threats, a comprehensive security system must be implemented, considering all facets of satellite communication, from key management and encryption to digital signatures, digital certificates, and hardware security modules (HSMs). The role of HSMs in securely storing cryptographic keys and performing cryptographic operations is emphasized, highlighting their importance in protecting sensitive data.

A partial implementation of the digital signature component demonstrates the practical importance of using HSMs for key storage, underscoring the feasibility of the proposed system in real-world applications. The findings indicate that established protocols and algorithms, when combined effectively, can provide robust security solutions for satellite communication.

This research contributes to the development of secure satellite communication systems by offering a detailed security design tailored to the specific needs and challenges of the space environment. It provides a framework for future implementations, ensuring that satellite systems can operate securely and efficiently in an increasingly interconnected and vulnerable digital landscape.

Keywords: Cybersecurity, satellite communication, key management, digital signatures, encryption, digital certificates, hardware security module