Cryptography I: Advanced Block Cipher Modes and Padding
Practical implementation of CBC and CTR modes: IV management, nonce-based encryption, padding schemes (TLS), and security bounds.
Cryptography
Cryptography I: Block Ciphers and Modes of Operation
Week 2-3: Block ciphers, PRP security, one-time key modes (ECB/DET-CTR), many-time key modes (CBC/CTR), IV/nonce-based encryption.
Cryptography I: Stream Ciphers, PRGs, and Semantic Security
Week 1 foundations: stream ciphers, PRG security definitions, birthday paradox, attacks on OTP/RC4/CSS, and Salsa20 construction.