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Applied cryptography · Intermediate · 6 h

Using cryptography correctly

Symmetric versus public-key, signatures and integrity, certificates and PKI, key exchange and forward secrecy, and the classic misuses.

Why employers care: Most cryptography failures come from misusing good primitives, not from broken maths. Engineers who know how to use them correctly prevent real vulnerabilities.

In the roadmaps for: Cybersecurity Engineer, Blockchain Developer

Lessons, in order

  1. Signatures, certificates and using crypto correctlySign and verify a release with a public-key signature, see tampering and forgery rejected, and learn where certificates and key management fit.3 min