A Comprehensive Survey On The Evolution, Applications, And Future Directions Of Cryptography: From Classical Techniques To Post-quantum Innovations

Abstract

Cryptography, The Science Of Secure Communication, Plays A Vital Role In Ensuring Key Terminologies Of Data Security Across Various Domains, Including Secure Communications, Financial Transactions, And The Internet Of Things (IoT). This Survey Explores The Evolution Of Cryptographic Techniques, From Classical Techniques To Post-Quantum Innovations. It Dives Into Advanced Concepts Of Cryptography, Such As Hash Functions, Post-quantum Algorithms, And Lightweight Algorithms Tailored For Resource-constrained Devices. Emerging Areas, Such As Neural Network-based Encryption And EEG-driven Key Generation, Are Also Examined To Enhance System Robustness And Security. The Paper Reviews The Comparative Performance Of Cryptographic Algorithms Based On Performance Metrics Like Processing Time, Throughput, Power Consumption, And Resistance To Attacks, Addressing Their Applicability In Diverse Environments. Furthermore, It Examines Challenges Such As Implementation Gaps, Vulnerabilities To Side-channel And Timing Attacks, And Ethical Concerns In Balancing Privacy With Regulation. With The Rise Of Quantum Computing And The Increasing Complexity Of Cyber Threats, The Paper Emphasizes The Importance Of Innovation In Cryptographic Research, Including Quantum-resistant Algorithms And Adaptive Systems For Emerg- Ing Technologies Like Blockchain, Cloud Computing, And The Metaverse. By Analyzing Current Trends And Future Directions, This Survey Provides A Comprehensive Understanding Of Cryptography’s Critical Role In Securing The Digital World And Underscores The Need For Continuous Advancements To Address Evolving Threats.

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