1 files changed, 85 insertions, 0 deletions
diff --git a/crypto/test/src/asn1/test/InputStreamTest.cs b/crypto/test/src/asn1/test/InputStreamTest.cs
new file mode 100644
index 000000000..1d92759e0
--- /dev/null
+++ b/crypto/test/src/asn1/test/InputStreamTest.cs
@@ -0,0 +1,85 @@
+using System;
+using System.IO;
+
+using NUnit.Framework;
+
+using Org.BouncyCastle.Utilities.Test;
+
+namespace Org.BouncyCastle.Asn1.Tests
+{
+	[TestFixture]
+	public class InputStreamTest
+		: SimpleTest
+	{
+		private static readonly byte[] outOfBoundsLength = new byte[] { (byte)0x30, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff };
+		private static readonly byte[] negativeLength = new byte[] { (byte)0x30, (byte)0x84, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff };
+		private static readonly byte[] outsideLimitLength = new byte[] { (byte)0x30, (byte)0x83, (byte)0x0f, (byte)0xff, (byte)0xff };
+
+		public override string Name
+		{
+			get { return "InputStream"; }
+		}
+
+		public override void PerformTest()
+		{
+			Asn1InputStream aIn = new Asn1InputStream(outOfBoundsLength);
+
+			try
+			{
+				aIn.ReadObject();
+				Fail("out of bounds length not detected.");
+			}
+			catch (IOException e)
+			{
+				if (!e.Message.StartsWith("DER length more than 4 bytes"))
+				{
+					Fail("wrong exception: " + e.Message);
+				}
+			}
+
+			aIn = new Asn1InputStream(negativeLength);
+
+			try
+			{
+				aIn.ReadObject();
+				Fail("negative length not detected.");
+			}
+			catch (IOException e)
+			{
+				if (!e.Message.Equals("Corrupted stream - negative length found"))
+				{
+					Fail("wrong exception: " + e.Message);
+				}
+			}
+
+			aIn = new Asn1InputStream(outsideLimitLength);
+
+			try
+			{
+				aIn.ReadObject();
+				Fail("outside limit length not detected.");
+			}
+			catch (IOException e)
+			{
+				if (!e.Message.Equals("Corrupted stream - out of bounds length found"))
+				{
+					Fail("wrong exception: " + e.Message);
+				}
+			}
+		}
+
+		public static void Main(
+			string[] args)
+		{
+			RunTest(new InputStreamTest());
+		}
+
+		[Test]
+		public void TestFunction()
+		{
+			string resultText = Perform().ToString();
+
+			Assert.AreEqual(Name + ": Okay", resultText);
+		}
+	}
+}