What is TLS 1.3?
TLS 1.3 is a protocol version for authenticated, confidential and integrity-protected connections, commonly used by HTTPS.
How it works and where it is used
1. How it works Client and server negotiate algorithms, exchange key material and authenticate the server certificate. Application data then uses symmetric keys; secret keys are not sent in cleartext. 2. Applications and examples Web and API services use TLS. Version 1.3 removes several older choices and simplifies setup. Certificate identity must match the intended site.
Limits and good practice
3. Limitations and security Transport security does not fix compromised endpoints or faulty permissions. Early 0-RTT data can be replayed and is unsuitable for some operations. 4. Practical considerations Keep software and certificate chains current, monitor expiry and test compatibility. Disabling certificate checks to hide errors undermines security.