1 files changed, 61 insertions, 0 deletions
diff --git a/crypto/src/bcpg/sig/IssuerKeyId.cs b/crypto/src/bcpg/sig/IssuerKeyId.cs
new file mode 100644
index 000000000..91490d33b
--- /dev/null
+++ b/crypto/src/bcpg/sig/IssuerKeyId.cs
@@ -0,0 +1,61 @@
+using System;
+
+
+
+namespace Org.BouncyCastle.Bcpg.Sig
+{
+    /**
+    * packet giving signature creation time.
+    */
+    public class IssuerKeyId
+        : SignatureSubpacket
+    {
+        protected static byte[] KeyIdToBytes(
+            long    keyId)
+        {
+            byte[]    data = new byte[8];
+
+            data[0] = (byte)(keyId >> 56);
+            data[1] = (byte)(keyId >> 48);
+            data[2] = (byte)(keyId >> 40);
+            data[3] = (byte)(keyId >> 32);
+            data[4] = (byte)(keyId >> 24);
+            data[5] = (byte)(keyId >> 16);
+            data[6] = (byte)(keyId >> 8);
+            data[7] = (byte)keyId;
+
+            return data;
+        }
+
+        public IssuerKeyId(
+            bool    critical,
+            byte[]     data)
+            : base(SignatureSubpacketTag.IssuerKeyId, critical, data)
+        {
+        }
+
+        public IssuerKeyId(
+            bool    critical,
+            long       keyId)
+            : base(SignatureSubpacketTag.IssuerKeyId, critical, KeyIdToBytes(keyId))
+        {
+        }
+
+        public long KeyId
+        {
+			get
+			{
+				long keyId = ((long)(data[0] & 0xff) << 56)
+					| ((long)(data[1] & 0xff) << 48)
+					| ((long)(data[2] & 0xff) << 40)
+					| ((long)(data[3] & 0xff) << 32)
+					| ((long)(data[4] & 0xff) << 24)
+					| ((long)(data[5] & 0xff) << 16)
+					| ((long)(data[6] & 0xff) << 8)
+					| ((long)data[7] & 0xff);
+
+				return keyId;
+			}
+        }
+    }
+}