ConfigurationBasedIssuerNameRegistry.GetIssuerName Method (SecurityToken)
Returns the issuer name associated with the specified X509SecurityToken by mapping the certificate thumbprint to a name in the trusted issuers dictionary.
Assembly: System.IdentityModel (in System.IdentityModel.dll)
The default implementation searches the ConfiguredTrustedIssuers dictionary for the thumbprint of the X.509 certificate specified in securityToken. If an entry is found, the issuer name is returned; otherwise, null is returned. If securityToken is not assignable from X509SecurityToken, null is returned.