1 files changed, 42 insertions, 0 deletions
diff --git a/crypto/src/bcpg/ModDetectionCodePacket.cs b/crypto/src/bcpg/ModDetectionCodePacket.cs
new file mode 100644
index 000000000..6bb23645a
--- /dev/null
+++ b/crypto/src/bcpg/ModDetectionCodePacket.cs
@@ -0,0 +1,42 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Bcpg
+{
+	/// <remarks>Basic packet for a modification detection code packet.</remarks>
+    public class ModDetectionCodePacket
+        : ContainedPacket
+    {
+        private readonly byte[] digest;
+
+		internal ModDetectionCodePacket(
+            BcpgInputStream bcpgIn)
+        {
+			if (bcpgIn == null)
+				throw new ArgumentNullException("bcpgIn");
+
+			this.digest = new byte[20];
+            bcpgIn.ReadFully(this.digest);
+        }
+
+		public ModDetectionCodePacket(
+            byte[] digest)
+        {
+			if (digest == null)
+				throw new ArgumentNullException("digest");
+
+			this.digest = (byte[]) digest.Clone();
+        }
+
+		public byte[] GetDigest()
+        {
+			return (byte[]) digest.Clone();
+        }
+
+		public override void Encode(
+            BcpgOutputStream bcpgOut)
+        {
+            bcpgOut.WritePacket(PacketTag.ModificationDetectionCode, digest, false);
+        }
+    }
+}