Cryptography / Encryption
Lesson 15 of 25
Key exchange
Diffie-Hellman lets two people agree on a shared secret over a public channel without ever sending it. Every HTTPS connection does this.
Key points
- Agree on a secret in public
- Used at the start of TLS
- Forward secrecy uses fresh keys each session
Quiz · +10 XP
What does Diffie-Hellman let two parties do?
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