Imported Upstream version 5.8.0.22

Former-commit-id: df344e34b07851d296efb3e6604c8db42b6f7aa3

mcs/class/referencesource/System.Core/System/Security/Cryptography/ECDsaCng.cs

@@ -35,6 +35,8 @@ namespace System.Security.Cryptography {
             throw new NotImplementedException ();
         }
 
+        public CngAlgorithm HashAlgorithm { get; set; }
+
         public CngKey Key {
             get {
                 throw new NotImplementedException ();
@@ -52,6 +54,38 @@ namespace System.Security.Cryptography {
         public override bool VerifyHash(byte[] hash, byte[] signature) {
             throw new NotImplementedException();
         }
+
+        public void FromXmlString (string xml, ECKeyXmlFormat format) {
+            throw new NotImplementedException();
+        }
+
+        public byte[] SignData (byte[] data) {
+            throw new NotImplementedException();
+        }
+
+        public byte[] SignData (System.IO.Stream data) {
+            throw new NotImplementedException();
+        }
+
+        public byte[] SignData (byte[] data, int offset, int count) {
+            throw new NotImplementedException();
+        }
+
+        public string ToXmlString (ECKeyXmlFormat format) {
+            throw new NotImplementedException();
+        }
+
+        public bool VerifyData (byte[] data, byte[] signature) {
+            throw new NotImplementedException();
+        }
+
+        public bool VerifyData (System.IO.Stream data, byte[] signature) {
+            throw new NotImplementedException();
+        }
+
+        public bool VerifyData (byte[] data, int offset, int count, byte[] signature) {
+            throw new NotImplementedException();
+        }
 #else
         private static KeySizes[] s_legalKeySizes = new KeySizes[] { new KeySizes(256, 384, 128), new KeySizes(521, 521, 0) };