diff --git a/tomcat-cas/bin/digest.bat b/tomcat-cas/bin/digest.bat
new file mode 100644
index 0000000..fbc36d3
--- /dev/null
+++ b/tomcat-cas/bin/digest.bat
@@ -0,0 +1,54 @@
+@echo off
+rem Licensed to the Apache Software Foundation (ASF) under one or more
+rem contributor license agreements.  See the NOTICE file distributed with
+rem this work for additional information regarding copyright ownership.
+rem The ASF licenses this file to You under the Apache License, Version 2.0
+rem (the "License"); you may not use this file except in compliance with
+rem the License.  You may obtain a copy of the License at
+rem
+rem     http://www.apache.org/licenses/LICENSE-2.0
+rem
+rem Unless required by applicable law or agreed to in writing, software
+rem distributed under the License is distributed on an "AS IS" BASIS,
+rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+rem See the License for the specific language governing permissions and
+rem limitations under the License.
+
+if "%OS%" == "Windows_NT" setlocal
+rem ---------------------------------------------------------------------------
+rem Script to digest password using the algorithm specified
+rem ---------------------------------------------------------------------------
+
+rem Guess CATALINA_HOME if not defined
+if not "%CATALINA_HOME%" == "" goto gotHome
+set CATALINA_HOME=.
+if exist "%CATALINA_HOME%\bin\tool-wrapper.bat" goto okHome
+set CATALINA_HOME=..
+:gotHome
+if exist "%CATALINA_HOME%\bin\tool-wrapper.bat" goto okHome
+echo The CATALINA_HOME environment variable is not defined correctly
+echo This environment variable is needed to run this program
+goto end
+:okHome
+
+set "EXECUTABLE=%CATALINA_HOME%\bin\tool-wrapper.bat"
+
+rem Check that target executable exists
+if exist "%EXECUTABLE%" goto okExec
+echo Cannot find "%EXECUTABLE%"
+echo This file is needed to run this program
+goto end
+:okExec
+
+rem Get remaining unshifted command line arguments and save them in the
+set CMD_LINE_ARGS=
+:setArgs
+if ""%1""=="""" goto doneSetArgs
+set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1
+shift
+goto setArgs
+:doneSetArgs
+
+call "%EXECUTABLE%" -server org.apache.catalina.realm.RealmBase %CMD_LINE_ARGS%
+
+:end