C# Support for RSA SHA 256 signing for individual XML elements

Question

I have encountered a blocker with the .NET Framework version 4.5 to do with signing of XML with digital signatures.

My problem is based around the need to sign indi

Answer 1

Unfortunately Andrew's answer is not applicable when the private key cannot be exported.

I am using a smart-card and so far I have found no way of using SignedXML with SHA-256. This feature seems to be broken in the current implementation of RSACryptoServiceProvider.

The only solution in my opinion would be to switch from CSP to PKCS#11 and then use BouncyCastle.Net. And rewrite everything.