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Cryptography – Block Ciphers and Modes of Operation

Stub for a lecture post on block ciphers and common modes of operation, building on earlier symmetric encryption basics.

1 min read By Scott Weeden cryptographyblock-ciphersmodes-of-operation

Cryptography – Block Ciphers and Modes of Operation

[Stub] Overview of block cipher structure and the intuition behind standard modes of operation.

Topics

  • Block cipher abstraction and security intuition
  • ECB vs. CBC vs. CTR (high-level)
  • Initialization vectors and randomness requirements
  • Common pitfalls (pattern leakage, replay, misuse of IVs)

Reading and Preparation

[Stub] Link to Canvas slides or textbook sections on block cipher modes.