Cryptography / Encryption
Lesson 19 of 25
End-to-end encryption
With end-to-end encryption, like Signal and WhatsApp, only the people in the chat hold the keys. Even the company running the service can't read messages.
Key points
- Keys stay on users' devices
- The server only passes ciphertext
- Verify safety numbers for extra trust
Quiz · +10 XP
With end-to-end encryption, who can read the messages?
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