Public-Key Cryptography: From RSA to Post-Quantum Basics

Modern digital security relies heavily on asymmetric cryptography to protect communications, digital signatures, and sensitive data. This comprehensive text-based guide introduces you to the core principles behind public-key cryptosystems without overwhelming academic jargon. You will build a solid understanding of how public-key algorithms function, explore classic and post-quantum cryptosystems, and analyze real-world vulnerabilities and mathematical attack vectors. What you'll learn: - Understand the mathematical foundations of asymmetric cryptography and public-key infrastructure - Analyze the mechanics and key generation processes of the RSA cryptosystem - Explore classic algebraic and implementation attacks against RSA encryption - Examine alternative asymmetric models including Rabin and ElGamal cryptosystems - Study code-based and knapsack algorithms such as McEliece and Merkle-Hellman - Review modern cryptographic considerations, including forward secrecy and post-quantum readiness The course begins with fundamental terminology and number theory essentials before progressing systematically through individual public-key algorithms, attack scenarios, and modern security implications. This course is designed for beginners, developers, and aspiring security professionals. No prior cryptography background is required. Start reading today to master the foundations of public-key encryption and secure digital communication.