Block Ciphers and DES
This class lecture covers the following topics:
- Block vs. Stream Ciphers
- Shannon's S-P Networks
- Feistel Cipher Structure
- Feistel Cipher Design Elements
- Data Encryption Standard (DES)
- 1. Initial and Final Permutation
- 2. DES Round Structure
- Substitution Boxes
- 3. DES Sub-Key Generation
- DES Decryption
- Avalanche Effect
- Avalanche in DES
- Strength of DES
- Differential Cryptanalysis
- Linear Cryptanalysis
- Block Cipher Design Principles
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