Add new PGP signature testcase

Author: peterdettman

crypto/test/src/openpgp/test/PGPSignatureTest.cs

@@ -326,8 +326,49 @@ private static readonly int[] PREFERRED_COMPRESSION_ALGORITHMS
               + "6YD9JpfYZHEFmpYoS+qQ3tLfPCG3gaS/djBZWWkNt5z7e6sbRko49XEj3EUh"
               + "33HgjrOlL8uJNbhlZ5NeILcxHqGTHji+5wMEDBjfNT/C6m0=");
 
+        private void DoTestRemoveSignature()
+        {
+            byte[] testPubKeyRing =
+                Base64.Decode(
+                    "mQGiBEAR8jYRBADNifuSopd20JOQ5x30ljIaY0M6927+vo09NeNxS3KqItba"
+                        + "nz9o5e2aqdT0W1xgdHYZmdElOHTTsugZxdXTEhghyxoo3KhVcNnTABQyrrvX"
+                        + "qouvmP2fEDEw0Vpyk+90BpyY9YlgeX/dEA8OfooRLCJde/iDTl7r9FT+mts8"
+                        + "g3azjwCgx+pOLD9LPBF5E4FhUOdXISJ0f4EEAKXSOi9nZzajpdhe8W2ZL9gc"
+                        + "BpzZi6AcrRZBHOEMqd69gtUxA4eD8xycUQ42yH89imEcwLz8XdJ98uHUxGJi"
+                        + "qp6hq4oakmw8GQfiL7yQIFgaM0dOAI9Afe3m84cEYZsoAFYpB4/s9pVMpPRH"
+                        + "NsVspU0qd3NHnSZ0QXs8L8DXGO1uBACjDUj+8GsfDCIP2QF3JC+nPUNa0Y5t"
+                        + "wKPKl+T8hX/0FBD7fnNeC6c9j5Ir/Fp/QtdaDAOoBKiyNLh1JaB1NY6US5zc"
+                        + "qFks2seZPjXEiE6OIDXYra494mjNKGUobA4hqT2peKWXt/uBcuL1mjKOy8Qf"
+                        + "JxgEd0MOcGJO+1PFFZWGzLQ3RXJpYyBILiBFY2hpZG5hICh0ZXN0IGtleSBv"
+                        + "bmx5KSA8ZXJpY0Bib3VuY3ljYXN0bGUub3JnPohZBBMRAgAZBQJAEfI2BAsH"
+                        + "AwIDFQIDAxYCAQIeAQIXgAAKCRAOtk6iUOgnkDdnAKC/CfLWikSBdbngY6OK"
+                        + "5UN3+o7q1ACcDRqjT3yjBU3WmRUNlxBg3tSuljmwAgAAuQENBEAR8jgQBAC2"
+                        + "kr57iuOaV7Ga1xcU14MNbKcA0PVembRCjcVjei/3yVfT/fuCVtGHOmYLEBqH"
+                        + "bn5aaJ0P/6vMbLCHKuN61NZlts+LEctfwoya43RtcubqMc7eKw4k0JnnoYgB"
+                        + "ocLXOtloCb7jfubOsnfORvrUkK0+Ne6anRhFBYfaBmGU75cQgwADBQP/XxR2"
+                        + "qGHiwn+0YiMioRDRiIAxp6UiC/JQIri2AKSqAi0zeAMdrRsBN7kyzYVVpWwN"
+                        + "5u13gPdQ2HnJ7d4wLWAuizUdKIQxBG8VoCxkbipnwh2RR4xCXFDhJrJFQUm+"
+                        + "4nKx9JvAmZTBIlI5Wsi5qxst/9p5MgP3flXsNi1tRbTmRhqIRgQYEQIABgUC"
+                        + "QBHyOAAKCRAOtk6iUOgnkBStAJoCZBVM61B1LG2xip294MZecMtCwQCbBbsk"
+                        + "JVCXP0/Szm05GB+WN+MOCT2wAgAA");
+
+            PgpObjectFactory pgpFact = new PgpObjectFactory(testPubKeyRing);
+
+            PgpPublicKeyRing pgpPub = (PgpPublicKeyRing)pgpFact.NextPgpObject();
+
+            foreach (PgpSignature sig in pgpPub.GetPublicKey().GetSignatures())
+            { 
+                if (sig.SignatureType == PgpSignature.PositiveCertification)
+                {
+                    PgpPublicKey.RemoveCertification(pgpPub.GetPublicKey(), sig);
+                }
+            }
+        }
+
         public override void PerformTest()
         {
+            DoTestRemoveSignature();
+
             //
             // RSA tests
             //