Microsoft has released .Net Framework 4.6.2, tightening security in multiple areas, including the BCL (Base Class Library). The new version also makes improvements to the SQL client, Windows Communication Foundation, the CLR (Common Language Runtime), and the ASP.Net web framework.
The security focus in the BCL impacts PKI capabilities, and X.509 certificates now support the FIPS 186-3 digital signature algorithm. "This support enables X.509 certificates with keys that exceed 1024-bit," Microsoft's Stacey Haffner said. "It also enables computing signatures with the SHA-2 family of hash algorithms (SHA256, SHA384, and SHA512)."