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Security

Applied Cryptography for Developers

The planned outline of 13 modules. Lessons are written, run and reviewed before they are published.

Coming soon 13 modules

Coming soon. This track is being written. Below is its planned outline: a lesson appears here once its examples have been run and its technical review is signed off.

Planned outline

  1. Module 1

    Foundations: goals, bytes and security levels

    Coming soon
  2. Module 2

    Randomness and secret values

    Coming soon
  3. Module 3

    Hash functions and their uses

    Coming soon
  4. Module 4

    Message authentication

    Coming soon
  5. Module 5

    Key derivation and password storage

    Coming soon
  6. Module 6

    Symmetric encryption and AEAD

    Coming soon
  7. Module 7

    Data at rest and key management

    Coming soon
  8. Module 8

    Public-key cryptography

    Coming soon
  9. Module 9

    Tokens, OTPs and passkeys

    Coming soon
  10. Module 10

    TLS 1.3 and certificates

    Coming soon
  11. Module 11

    Post-quantum cryptography

    Coming soon
  12. Module 12

    Testing, side channels and review

    Coming soon
  13. Module 13

    End-to-end encryption and advanced protocols

    Coming soon

Related tools

Hash Generator Hashes and HMACs of text or huge files, plus checksum verification. HMAC Generator Keyed hashes for API and webhook signatures — compute, verify and get the code. Bcrypt Hash Generator & Verifier Create and verify bcrypt hashes in your browser, with timing and the 72-byte check. JWT Decoder Read any JWT and check its signature — without sending the token anywhere. JWT Encoder & Signer Sign a JWT with any standard algorithm — the key never leaves this page. Password Generator Strong random passwords and passphrases, generated only on your device.

Official documentation

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