1 files changed, 74 insertions, 0 deletions
diff --git a/crypto/src/bcpg/sig/KeyFlags.cs b/crypto/src/bcpg/sig/KeyFlags.cs
new file mode 100644
index 000000000..0592301b3
--- /dev/null
+++ b/crypto/src/bcpg/sig/KeyFlags.cs
@@ -0,0 +1,74 @@
+using System;
+
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Bcpg.Sig
+{
+    /**
+    * Packet holding the key flag values.
+    */
+    public class KeyFlags
+        : SignatureSubpacket
+    {
+		public const int CertifyOther	= 0x01;
+		public const int SignData		= 0x02;
+		public const int EncryptComms	= 0x04;
+		public const int EncryptStorage	= 0x08;
+		public const int Split			= 0x10;
+		public const int Authentication	= 0x20;
+		public const int Shared			= 0x80;
+
+        private static byte[] IntToByteArray(
+            int v)
+        {
+			byte[] tmp = new byte[4];
+			int size = 0;
+
+			for (int i = 0; i != 4; i++)
+			{
+				tmp[i] = (byte)(v >> (i * 8));
+				if (tmp[i] != 0)
+				{
+					size = i;
+				}
+			}
+
+			byte[] data = new byte[size + 1];
+			Array.Copy(tmp, 0, data, 0, data.Length);
+			return data;
+		}
+
+		public KeyFlags(
+            bool	critical,
+            byte[]	data)
+            : base(SignatureSubpacketTag.KeyFlags, critical, data)
+        {
+        }
+
+		public KeyFlags(
+			bool	critical,
+			int		flags)
+            : base(SignatureSubpacketTag.KeyFlags, critical, IntToByteArray(flags))
+        {
+        }
+
+		/// <summary>
+		/// Return the flag values contained in the first 4 octets (note: at the moment
+		/// the standard only uses the first one).
+		/// </summary>
+		public int Flags
+        {
+			get
+			{
+				int flags = 0;
+
+				for (int i = 0; i != data.Length; i++)
+				{
+					flags |= (data[i] & 0xff) << (i * 8);
+				}
+
+				return flags;
+			}
+        }
+    }
+}