Public-key crypto & signatures
P52.asymmetric-key-exchange.02 · Audience: guest, it-ml, language-pro · Prerequisites: Key exchange: Diffie–Hellman
Diffie–Hellman agrees a secret; public-key cryptography does the rest of asymmetric crypto — encrypting to someone and signing as someone with a key pair. This module builds textbook RSA to make the encrypt-vs-sign duality concrete, then closes the pillar on the judgement that matters most in practice: never roll your own crypto.
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Rung 1 — toy RSA: encrypt, decrypt, sign
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Interview rung — never roll your own crypto (free-form)
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