1 files changed, 93 insertions, 0 deletions
diff --git a/crypto/src/bcpg/OnePassSignaturePacket.cs b/crypto/src/bcpg/OnePassSignaturePacket.cs
new file mode 100644
index 000000000..b67df0a52
--- /dev/null
+++ b/crypto/src/bcpg/OnePassSignaturePacket.cs
@@ -0,0 +1,93 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Bcpg
+{
+	/// <remarks>Generic signature object</remarks>
+	public class OnePassSignaturePacket
+		: ContainedPacket
+	{
+		private int version;
+		private int sigType;
+		private HashAlgorithmTag hashAlgorithm;
+		private PublicKeyAlgorithmTag keyAlgorithm;
+		private long keyId;
+		private int nested;
+
+		internal OnePassSignaturePacket(
+			BcpgInputStream	bcpgIn)
+		{
+			version = bcpgIn.ReadByte();
+			sigType = bcpgIn.ReadByte();
+			hashAlgorithm = (HashAlgorithmTag) bcpgIn.ReadByte();
+			keyAlgorithm = (PublicKeyAlgorithmTag) bcpgIn.ReadByte();
+
+			keyId |= (long)bcpgIn.ReadByte() << 56;
+			keyId |= (long)bcpgIn.ReadByte() << 48;
+			keyId |= (long)bcpgIn.ReadByte() << 40;
+			keyId |= (long)bcpgIn.ReadByte() << 32;
+			keyId |= (long)bcpgIn.ReadByte() << 24;
+			keyId |= (long)bcpgIn.ReadByte() << 16;
+			keyId |= (long)bcpgIn.ReadByte() << 8;
+			keyId |= (uint)bcpgIn.ReadByte();
+
+			nested = bcpgIn.ReadByte();
+		}
+
+		public OnePassSignaturePacket(
+			int						sigType,
+			HashAlgorithmTag		hashAlgorithm,
+			PublicKeyAlgorithmTag	keyAlgorithm,
+			long					keyId,
+			bool					isNested)
+		{
+			this.version = 3;
+			this.sigType = sigType;
+			this.hashAlgorithm = hashAlgorithm;
+			this.keyAlgorithm = keyAlgorithm;
+			this.keyId = keyId;
+			this.nested = (isNested) ? 0 : 1;
+		}
+
+		public int SignatureType
+		{
+			get { return sigType; }
+		}
+
+		/// <summary>The encryption algorithm tag.</summary>
+		public PublicKeyAlgorithmTag KeyAlgorithm
+		{
+			get { return keyAlgorithm; }
+		}
+
+		/// <summary>The hash algorithm tag.</summary>
+		public HashAlgorithmTag HashAlgorithm
+		{
+			get { return hashAlgorithm; }
+		}
+
+		public long KeyId
+		{
+			get { return keyId; }
+		}
+
+		public override void Encode(
+			BcpgOutputStream bcpgOut)
+		{
+			MemoryStream bOut = new MemoryStream();
+			BcpgOutputStream pOut = new BcpgOutputStream(bOut);
+
+			pOut.Write(
+				(byte) version,
+				(byte) sigType,
+				(byte) hashAlgorithm,
+				(byte) keyAlgorithm);
+
+			pOut.WriteLong(keyId);
+
+			pOut.WriteByte((byte) nested);
+
+			bcpgOut.WritePacket(PacketTag.OnePassSignature, bOut.ToArray(), true);
+		}
+	}
+}