1 files changed, 91 insertions, 0 deletions
diff --git a/crypto/src/bcpg/SymmetricKeyEncSessionPacket.cs b/crypto/src/bcpg/SymmetricKeyEncSessionPacket.cs
new file mode 100644
index 000000000..0381fa386
--- /dev/null
+++ b/crypto/src/bcpg/SymmetricKeyEncSessionPacket.cs
@@ -0,0 +1,91 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Bcpg
+{
+    /**
+    * Basic type for a symmetric encrypted session key packet
+    */
+    public class SymmetricKeyEncSessionPacket
+        : ContainedPacket
+    {
+        private int version;
+        private SymmetricKeyAlgorithmTag encAlgorithm;
+        private S2k s2k;
+        private readonly byte[] secKeyData;
+
+        public SymmetricKeyEncSessionPacket(
+            BcpgInputStream bcpgIn)
+        {
+            version = bcpgIn.ReadByte();
+            encAlgorithm = (SymmetricKeyAlgorithmTag) bcpgIn.ReadByte();
+
+            s2k = new S2k(bcpgIn);
+
+            secKeyData = bcpgIn.ReadAll();
+        }
+
+		public SymmetricKeyEncSessionPacket(
+            SymmetricKeyAlgorithmTag	encAlgorithm,
+            S2k							s2k,
+            byte[]						secKeyData)
+        {
+            this.version = 4;
+            this.encAlgorithm = encAlgorithm;
+            this.s2k = s2k;
+            this.secKeyData = secKeyData;
+        }
+
+        /**
+        * @return int
+        */
+        public SymmetricKeyAlgorithmTag EncAlgorithm
+        {
+			get { return encAlgorithm; }
+        }
+
+        /**
+        * @return S2k
+        */
+        public S2k S2k
+        {
+			get { return s2k; }
+        }
+
+        /**
+        * @return byte[]
+        */
+        public byte[] GetSecKeyData()
+        {
+            return secKeyData;
+        }
+
+        /**
+        * @return int
+        */
+        public int Version
+        {
+			get { return version; }
+        }
+
+        public override void Encode(
+            BcpgOutputStream bcpgOut)
+        {
+            MemoryStream bOut = new MemoryStream();
+            BcpgOutputStream pOut = new BcpgOutputStream(bOut);
+
+            pOut.Write(
+				(byte) version,
+				(byte) encAlgorithm);
+
+			pOut.WriteObject(s2k);
+
+			if (secKeyData != null && secKeyData.Length > 0)
+			{
+                pOut.Write(secKeyData);
+            }
+
+			bcpgOut.WritePacket(PacketTag.SymmetricKeyEncryptedSessionKey, bOut.ToArray(), true);
+        }
+    }
+}