Symmetric Cryptography

1 Fundamentals
1.1 Symmetric Encryption
1.2 Confusion and Diffusion
2 Data Encryption Standard (DES)
2.1 History and Development
2.2 64-bit Block, 56-bit Key
2.3 Feistel Network
2.4 16 Rounds and Key Schedule
2.5 Triple DES
3 Advanced Encryption Standard (AES)
3.1 The NIST Competition
3.2 Blocks, Keys, and Rounds
3.3 Round Structure
3.4 SubBytes
3.5 ShiftRows
3.6 MixColumns
3.7 AddRoundKey
3.8 Key Expansion
4 Block Cipher Modes
4.1 Electronic Codebook (ECB)
4.2 Cipher Block Chaining (CBC)
4.3 Counter Mode (CTR)
4.4 Output Feedback (OFB)
4.5 Galois/Counter Mode (GCM)