Cryptography / Encryption
Lesson 17 of 25
Certificates and PKI
A certificate links a public key to a domain name, signed by a certificate authority your browser trusts. That's how your browser knows it's really talking to your bank.
Key points
- CAs sign certificates
- Browsers ship a list of trusted CAs
- Certificates expire and must be renewed
Quiz · +10 XP
What does a website's certificate link together?
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