Unlocking the unknowns: Cryptography Essentials

on YouTube ↗34m

" summary

Covers four concrete needs — integrity, authentication, confidentiality, non‑repudiation — and shows how to implement each with Java SE APIs plus optional Bouncy Castle. Demonstrates that Maven still publishes MD5/SHA‑1 but recommends SHA‑256 over SHA‑1/MD5, explains password hashing with Argon2 + salt + iterations (vs bcrypt), and shows JWT use as HMAC-based signatures. Explains key choices (symmetric vs asymmetric), storing private keys in JKS or a vault, CI/CD secret injection, and links to working code and a book.

AI-written summary · about

" chapters (7)

1. 0:00Cryptography essentials
2. 3:43Data integrity with hashing
3. 11:12Password hashing securely
4. 15:51Authentication with message authentication codes
5. 20:49Confidentiality via encryption
6. 26:28Secrets in code and deployments
7. 30:45Identity verification with signatures

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