<PackageReference Include="System.Security.Cryptography.Xml" Version="10.0.10" />

System.Security.Cryptography.Xml.KeyReference

public sealed class KeyReference : EncryptedReference
Represents the <KeyReference> element used in XML encryption. This class cannot be inherited.
namespace System.Security.Cryptography.Xml { public sealed class KeyReference : EncryptedReference { public KeyReference(); public KeyReference(string uri); public KeyReference(string uri, TransformChain transformChain); } }