Gets the issuer of the claim.
Assembly: mscorlib (in mscorlib.dll)
The value of the property is a name that is taken from a list of well-known issuers maintained by the issuer name registry. The issuer name registry is an instance of a class that derives from the IssuerNameRegistry class. The issuer name registry associates a mnemonic name (the issuer name) with the cryptographic material that is needed to verify signatures of tokens produced by the issuer; for example, an X.509 certificate.