[Cryptix-commits] projects/jce/src/cryptix.jce.provider.util Util.java

[<gel...@mx...>]

gelderen    03/02/07 10:06:24

  Modified:    jce/src/cryptix.jce.provider.util Util.java
  Log:
  Add boolean equals(byte[], byte[]).

Revision  Changes    Path
1.3       +24 -2     projects/jce/src/cryptix.jce.provider.util/Util.java

Index: Util.java
===================================================================
RCS file: /home/cryptix-cvs/cvsroot/projects/jce/src/cryptix.jce.provider.util/Util.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -r1.2 -r1.3
--- Util.java	18 Nov 2001 02:28:16 -0000	1.2
+++ Util.java	7 Feb 2003 15:06:24 -0000	1.3
@@ -1,4 +1,4 @@
-/* $Id: Util.java,v 1.2 2001/11/18 02:28:16 gelderen Exp $
+/* $Id: Util.java,v 1.3 2003/02/07 15:06:24 gelderen Exp $
  *
  * Copyright (C) 2000 The Cryptix Foundation Limited.
  * All rights reserved.
@@ -17,7 +17,7 @@
 /**
  * Misc utility methods.
  *
- * @version $Revision: 1.2 $
+ * @version $Revision: 1.3 $
  * @author  Jeroen C. van Gelderen (gel...@cr...)
  */
 public final class Util
@@ -69,5 +69,27 @@
         int res_off = resultByteLen-x_len;
         System.arraycopy(x_bytes, x_off, res_bytes, res_off, x_len);
         return res_bytes;
+    }
+
+
+    /**
+     * Compare two byte[] for equality. byte[]s are considered equal if they
+     * have the same length and the same contents (same elems, same order).
+     * Additionally, two null arguments compare equal too.
+     */
+    public static boolean equals(byte[] a, byte[] b) {
+
+        if( a==null && b==null ) return true;
+
+        if( a==null ^ b==null ) return false;
+
+        int aLen = a.length;
+        int bLen = b.length;
+        if( aLen != bLen ) return false;
+
+        for(int i=0; i<aLen; i++)
+            if( a[i] != b[i] ) return false;
+
+        return true;
     }
 }