Public key Cryptography: - Principles of Public key Cryptography Systems, Number theory- Fundamental Theorem of arithmetic, Fermat’s Theorem, Euler’s Theorem, Euler’s Totient Function, Extended Euclid’s Algorithm, Modular arithmetic.AES: Basic Structure- Primitive operation- Inverse Cipher- Key Expansion, Rounds, Inverse Rounds. IDEA: Primitive operations- Key expansions- One round, Odd round, Even Round- Inverse keys for decryption.Block Cipher Design principles- Block Cipher modes of operations. Simplified DES- Block Cipher principles- The Data Encryption Standard, Strength of DES- Differential and linear Cryptanalysis. Symmetric Cipher Models- Substitution techniques- Transposition techniques- Rotor machines-Steganography.Subject Overview Video by Ms.Sreelakshmi.
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