1 files changed, 50 insertions, 0 deletions
diff --git a/pg/src/main/java/org/spongycastle/bcpg/sig/IssuerKeyID.java b/pg/src/main/java/org/spongycastle/bcpg/sig/IssuerKeyID.java
new file mode 100644
index 00000000..b963b797
--- /dev/null
+++ b/pg/src/main/java/org/spongycastle/bcpg/sig/IssuerKeyID.java
@@ -0,0 +1,50 @@
+package org.spongycastle.bcpg.sig;
+
+import org.spongycastle.bcpg.SignatureSubpacket;
+import org.spongycastle.bcpg.SignatureSubpacketTags;
+
+/**
+ * packet giving signature creation time.
+ */
+public class IssuerKeyID 
+    extends 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(
+        boolean    critical,
+        byte[]     data)
+    {
+        super(SignatureSubpacketTags.ISSUER_KEY_ID, critical, data);
+    }
+    
+    public IssuerKeyID(
+        boolean    critical,
+        long       keyID)
+    {
+        super(SignatureSubpacketTags.ISSUER_KEY_ID, critical, keyIDToBytes(keyID));
+    }
+    
+    public long getKeyID()
+    {
+        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) | ((data[5] & 0xff) << 16) | ((data[6] & 0xff) << 8) | (data[7] & 0xff);
+        
+        return keyID;
+    }
+}