1 files changed, 73 insertions, 0 deletions
diff --git a/libraries/spongycastle/pg/src/main/java/org/spongycastle/bcpg/sig/KeyFlags.java b/libraries/spongycastle/pg/src/main/java/org/spongycastle/bcpg/sig/KeyFlags.java
new file mode 100644
index 000000000..6ebb1fa87
--- /dev/null
+++ b/libraries/spongycastle/pg/src/main/java/org/spongycastle/bcpg/sig/KeyFlags.java
@@ -0,0 +1,73 @@
+package org.spongycastle.bcpg.sig;
+
+import org.spongycastle.bcpg.SignatureSubpacket;
+import org.spongycastle.bcpg.SignatureSubpacketTags;
+
+/**
+ * Packet holding the key flag values.
+ */
+public class KeyFlags 
+    extends SignatureSubpacket
+{
+    public static final int CERTIFY_OTHER = 0x01;
+    public static final int SIGN_DATA = 0x02;
+    public static final int ENCRYPT_COMMS = 0x04;
+    public static final int ENCRYPT_STORAGE = 0x08;
+    public static final int SPLIT = 0x10;
+    public static final int AUTHENTICATION = 0x20;
+    public static final 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];
+        
+        System.arraycopy(tmp, 0, data, 0, data.length);
+
+        return data;
+    }
+    
+    public KeyFlags(
+        boolean    critical,
+        byte[]     data)
+    {
+        super(SignatureSubpacketTags.KEY_FLAGS, critical, data);
+    }
+    
+    public KeyFlags(
+        boolean    critical,
+        int        flags)
+    {
+        super(SignatureSubpacketTags.KEY_FLAGS, critical, intToByteArray(flags));
+    }
+
+    /**
+     * Return the flag values contained in the first 4 octets (note: at the moment
+     * the standard only uses the first one).
+     *
+     * @return flag values.
+     */
+    public int getFlags()
+    {
+        int flags = 0;
+
+        for (int i = 0; i != data.length; i++)
+        {
+            flags |= (data[i] & 0xff) << (i * 8);
+        }
+
+        return flags;
+    }
+}