<ul data-eligibleForWebStory="true"><li>Cryptography plays a vital role in security protocols like TLS, SSH, and VPNs for encrypting communication.</li><li>The article discusses the author's realization of lacking deep understanding of cryptography despite prior experience.</li><li>The series aims to delve into the fundamentals of cryptography starting with symmetric encryption and probability.</li><li>Symmetric encryption ensures message security through shared secret keys for encryption and decryption.</li><li>Historical ciphers like Caesar, Substitution, and Vigenère were broken due to lack of true randomness.</li><li>Probability distributions and events are crucial in assessing cryptographic risks and security.</li><li>Random variables and independence help quantify cryptographic security and prevent predictability.</li><li>XOR is highlighted as a key operation in symmetric encryption due to its reversibility and simplicity.</li><li>Using XOR ensures no information loss in encryption compared to OR and AND operations.</li><li>The article emphasizes the importance of understanding these building blocks for establishing secure cryptographic systems.</li><li>The article is eligible for web story generation.</li></ul>

Introduction to Cryptography: Basic Blocks

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