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);
+ }
+ }
+}
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