Mastering Cryptography with Node's crypto module
summary
Practical walkthrough of Node.js' built-in crypto shows exact APIs and gotchas: listing 171 algorithms available, using AES-256-CBC with random IV and Buffer-based update/final, deriving keys with scrypt/pbkdf2+salt, generating secure randomness via randomBytes/randomInt, and exporting keypairs with generateKeyPair and RSA publicEncrypt/privateDecrypt. Diffie-Hellman key exchange runs but key generation can be slow (createDiffieHellman takes ~20s). All example code is published as runnable unit tests.
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chapters (10)
- 0:00Introduction to cryptography
- 3:16Encryption fundamentals
- 8:54Symmetric encryption with AES
- 13:07Key derivation functions
- 14:30Key distribution problem
- 17:19Asymmetric encryption with RSA
- 20:31Message signing and verification
- 22:18Real-world cryptography use case
- 24:04Public key certificates
- 27:36Summary and resources
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