ASN.1: "Alternative algorithm" types and extension OIDs

1 files changed, 44 insertions, 0 deletions

diff --git a/crypto/test/src/asn1/test/X509AltTest.cs b/crypto/test/src/asn1/test/X509AltTest.cs
new file mode 100644
index 000000000..047d2e23b
--- /dev/null
+++ b/crypto/test/src/asn1/test/X509AltTest.cs
@@ -0,0 +1,44 @@
+using NUnit.Framework;
+
+using Org.BouncyCastle.Asn1.Pkcs;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities.Encoders;
+
+namespace Org.BouncyCastle.Asn1.Tests
+{
+    [TestFixture]
+    public class X509AltTest
+    {
+        [Test]
+        public void TestX509AltTypes()
+        {
+            SubjectAltPublicKeyInfo subAlt = new SubjectAltPublicKeyInfo(
+                new AlgorithmIdentifier(PkcsObjectIdentifiers.RsaEncryption, DerNull.Instance),
+                new DerBitString(Hex.DecodeStrict("0102030405060708090807060504030201")));
+            AltSignatureValue sigValAlt = new AltSignatureValue(Hex.DecodeStrict("0102030405060708090807060504030201"));
+
+            AltSignatureAlgorithm sigAlgAlt = new AltSignatureAlgorithm(
+                new AlgorithmIdentifier(PkcsObjectIdentifiers.MD5WithRsaEncryption, DerNull.Instance));
+            AltSignatureAlgorithm sigAlgAlt2 = new AltSignatureAlgorithm(
+                PkcsObjectIdentifiers.MD5WithRsaEncryption, DerNull.Instance);
+
+            Assert.AreEqual(sigAlgAlt, sigAlgAlt2);
+
+            var extGen = new X509ExtensionsGenerator();
+            extGen.AddExtension(X509Extensions.SubjectAltPublicKeyInfo, false, subAlt);
+            extGen.AddExtension(X509Extensions.AltSignatureAlgorithm, false, sigAlgAlt);
+            extGen.AddExtension(X509Extensions.AltSignatureValue, false, sigValAlt);
+
+            var exts = extGen.Generate();
+            Assert.AreEqual(subAlt, SubjectAltPublicKeyInfo.FromExtensions(exts));
+            Assert.AreEqual(sigAlgAlt, AltSignatureAlgorithm.FromExtensions(exts));
+            Assert.AreEqual(sigValAlt, AltSignatureValue.FromExtensions(exts));
+            Assert.AreEqual(subAlt, SubjectAltPublicKeyInfo.GetInstance(subAlt.GetEncoded()));
+            Assert.AreEqual(sigAlgAlt, AltSignatureAlgorithm.GetInstance(sigAlgAlt.GetEncoded()));
+            Assert.AreEqual(sigValAlt, AltSignatureValue.GetInstance(sigValAlt.GetEncoded()));
+            Assert.AreEqual(subAlt, SubjectAltPublicKeyInfo.GetInstance(new DerTaggedObject(1, subAlt), true));
+            Assert.AreEqual(sigAlgAlt, AltSignatureAlgorithm.GetInstance(new DerTaggedObject(1, sigAlgAlt), true));
+            Assert.AreEqual(sigValAlt, AltSignatureValue.GetInstance(new DerTaggedObject(1, sigValAlt), true));
+        }
+    }
+}