Digital signature in c# without using BouncyCastle

Question

Without using 3rd party BouncyCastle library, is there a way to read a custom private key and sign the message ? (sha256 hash+encryption using private key)<

Answer 1

Microsoft provides a class SignedXML to sign files. To know more, checkout https://msdn.microsoft.com/en-us/library/system.security.cryptography.xml.signedxml(v=vs.110).aspx