Index: lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/UserDataServlet.java
===================================================================
RCS file: /usr/local/cvsroot/lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/UserDataServlet.java,v
diff -u -r1.2 -r1.3
--- lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/UserDataServlet.java	22 Aug 2007 06:16:00 -0000	1.2
+++ lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/UserDataServlet.java	6 Nov 2011 12:12:00 -0000	1.3
@@ -83,7 +83,7 @@
             String secretKey = LamsPluginUtil.getSecretKey();
             String serverId = LamsPluginUtil.getServerId();
             
-            if(!sha1(tsParam+ usernameParam + serverId + secretKey).equals(hashParam)){
+            if(!sha1(tsParam.toLowerCase() + usernameParam.toLowerCase() + serverId.toLowerCase() + secretKey.toLowerCase()).equals(hashParam)){
                 response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "authentication failed");
             }