1 files changed, 38 insertions, 0 deletions
diff --git a/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/encryption/util/ChecksumUtils.java b/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/encryption/util/ChecksumUtils.java
new file mode 100644
index 0000000000..7c77ddf510
--- /dev/null
+++ b/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/encryption/util/ChecksumUtils.java
@@ -0,0 +1,38 @@
+
+package org.apache.tuscany.das.ldap.encryption.util;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+import org.apache.tuscany.das.ldap.encryption.constants.EncryptionConstants;
+
+public class ChecksumUtils
+implements EncryptionConstants
+{
+    public static String computeMD5Hash(String string) 
+    throws NoSuchAlgorithmException
+    {
+        MessageDigest messageDigest = MessageDigest.getInstance(MD5);
+        
+        byte[] digest               = 
+            messageDigest.digest(string.getBytes());
+    
+        StringBuffer hexString = new StringBuffer();
+        for (int i=0;i<digest.length;i++) {
+          hexString.append (
+            Integer.toHexString(0xFF & digest[i]));
+        }
+    
+        char[] hexStringCharacters = hexString.toString().toCharArray();
+        String checksum = "";
+        
+        for( char i : hexStringCharacters)
+        {
+            int ascii = (int) i;
+            checksum = checksum + Integer.toString(ascii);
+        }
+ 
+        return checksum;
+    }
+
+}