1 files changed, 13 insertions, 0 deletions
diff --git a/javax/crypto/Mac.java b/javax/crypto/Mac.java
index abbff8b23..055b20a4f 100644
--- a/javax/crypto/Mac.java
+++ b/javax/crypto/Mac.java
@@ -41,6 +41,7 @@ package javax.crypto;
 import gnu.java.security.Engine;
 
 import java.lang.reflect.InvocationTargetException;
+import java.nio.ByteBuffer;
 import java.security.InvalidAlgorithmParameterException;
 import java.security.InvalidKeyException;
 import java.security.Key;
@@ -398,6 +399,18 @@ public class Mac implements Cloneable
   }
 
   /**
+   * Update this MAC with the remaining bytes in the given buffer
+   * @param buffer The input buffer.
+   * @since 1.5
+   */
+  public final void update (final ByteBuffer buffer)
+  {
+    if (virgin)
+      throw new IllegalStateException ("not initialized");
+    macSpi.engineUpdate(buffer);
+  }
+  
+  /**
    * Clone this instance, if the underlying implementation supports it.
    *
    * @return A clone of this instance.