Applied Crypto

Applied Cryptography

Understand how modern cryptography protects information, how its building blocks fit together, and how strong algorithms can still fail in real systems.

PRIMARY COURSE TEXTSerious CryptographySecond edition

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Cryptography Foundations

Encryption and the Meaning of Secure

Turn a readable message into ciphertext, discover why a simple cipher fails, and learn what a meaningful claim of cryptographic security must say.

60 minute core Objective Encryption foundations

Open topic

Randomness Foundations

Randomness That Cryptography Can Trust

See why random-looking is not the same as unpredictable, replay a deterministic generator, and diagnose how weak seeds or biased sampling can break strong cryptography.

60 minute core Objective Cryptographic randomness and entropy

Open topic