Authors: Tanvir Hasan
Abstract: Secure data transmission in distributed systems is a critical requirement for ensuring confidentiality, integrity, and availability of information exchanged across interconnected and geographically dispersed components. This study examines the fundamental principles, protocols, and techniques used to achieve secure communication in distributed environments, including cloud systems, peer-to-peer networks, and microservices architectures. It explores the role of cryptographic mechanisms such as encryption, digital signatures, and key management in protecting data during transmission. The study also analyzes secure communication protocols such as TLS/SSL, VPNs, and secure APIs that enable trusted interactions between system components. Additionally, it highlights emerging approaches such as blockchain-based security models and zero-trust architectures for enhancing trust and resilience. Key challenges, including latency overhead, scalability, interoperability, and vulnerability to cyberattacks such as man-in-the-middle and denial-of-service attacks, are discussed along with mitigation strategies. The findings emphasize that a multi-layered security approach combining encryption, authentication, monitoring, and policy enforcement is essential for ensuring secure and efficient data transmission in distributed systems.
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