Index: DigestAuthenticator.java
===================================================================
--- DigestAuthenticator.java	(revision 344190)
+++ DigestAuthenticator.java	(working copy)
@@ -221,10 +221,8 @@
             return (null);
         authorization = authorization.substring(7).trim();
 
-
-        StringTokenizer commaTokenizer =
-            new StringTokenizer(authorization, ",");
-
+        String[] tokens = authorization.split(",(?=(?:[^\"]*\"[^\"]*\")+$)");
+        
         String userName = null;
         String realmName = null;
         String nOnce = null;
@@ -235,8 +233,11 @@
         String response = null;
         String method = request.getMethod();
 
-        while (commaTokenizer.hasMoreTokens()) {
-            String currentToken = commaTokenizer.nextToken();
+        for (int i = 0; i < tokens.length; i++) {
+            String currentToken = tokens[i];
+            if (currentToken.length() == 0)
+                continue;
+            
             int equalSign = currentToken.indexOf('=');
             if (equalSign < 0)
                 return null;