Within the language are encryption methods. This These vary in complexity. The are some Some encryption methods are stronger than others. The protocols make use of these algorithms.
As security improves , it is important to check how secure your protocols and suite are. Qualys provide an excellent testing tool. https://www.ssllabs.com/ssltest/
Windows 2000 has none of the algorithms used by TLS 1.2, so even if you install a modern browser which can do TLS 1.2 on a Windows 2000 machine, it doesn't have the maths to do the encryption. Windows XP can do TLS 1.2 with Service Pack 3 or 4 installed.
== Secure Hashing Algorithms ==