Concept
Substitution cipher
Related lectures (31)
Perfect Secrecy: One-time Pad
Explores perfect secrecy, the one-time pad encryption method, attacks on encryption systems, and the Vigenère cipher.
Symmetric Encryption Schemes
Explores symmetric encryption schemes, including block and stream ciphers, their vulnerabilities, and the importance of key lengths.
Linear Applications: Rank and Ciphers
Covers linear applications, rank, and ciphers, emphasizing the importance of understanding the rank of linear transformations.
Information Encoding: Compression, Error Correction, Cryptography
Introduces information encoding through compression, error correction, and cryptography, with interactive gameplay on data security and encryption.
Ancient Cryptography: Techniques and Principles
Explores ancient to modern cryptography techniques, including substitution ciphers, frequency analysis, and the Enigma machine.
Communication Theory of Secrecy Systems
Explores C. E. Shannon's theory of secrecy systems, covering various ciphers and the concept of perfect secrecy in communication systems.
Modern Cryptography Milestones
Explores the evolution of modern cryptography milestones and the limitations of information theory in practical applications.
Symmetric Encryption: Formalism and Security
Explores the formalism and security aspects of symmetric encryption systems, including block ciphers, variable length encryption, and security definitions.
Discrete Log Problem: Index Calculus
Explores the discrete log problem and index calculus method in cryptography.
Ancient Cryptography: Security and Information Theory
Explores ancient cryptography, key security, perfect secrecy, and the Shannon encryption model.