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What versions of SSL/TLS security protocols does HTTPS support?

HTTPS supports multiple versions of SSL/TLS security protocols, mainly including SSL 3.0, TLS 1.0, TLS 1.1, TLS 1.2, and the more recent TLS 1.3.

  • SSL 3.0: This is an older version and is considered less secure due to vulnerabilities. It has been largely deprecated and is not recommended for use.

  • TLS 1.0 and TLS 1.1: These versions have also been deprecated due to security issues. They are no longer supported by many modern browsers and servers.

  • TLS 1.2: This version offers improved security and performance over its predecessors. It supports stronger encryption algorithms and is widely used.

  • TLS 1.3: This is the latest version of the TLS protocol, released in 2018. It significantly improves both security and performance. TLS 1.3 reduces the number of round-trip times (RTTs) required for a secure connection, making it faster than previous versions.

For example, when you visit a website using HTTPS, your browser and the web server will negotiate which version of TLS to use for the secure connection. Modern websites and servers typically prefer TLS 1.2 or TLS 1.3 for their security and performance benefits.

In the context of cloud services, platforms like Tencent Cloud offer support for these protocols, ensuring secure communication between clients and servers. Tencent Cloud's services are configured to use the latest and most secure versions of TLS to protect data in transit.