Java tutorial
//package com.java2s; /* * Copyright 2006-2015 WebPKI.org (http://webpki.org). * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ import javax.security.auth.x500.X500Principal; public class Main { public static String convertLegacyToRFC2253(String dn) { int i = dn.toLowerCase().indexOf(" e="); if (i < 0) i = dn.toLowerCase().indexOf(",e="); if (i > 0) { dn = dn.substring(0, ++i) + "EMAILADDRESS" + dn.substring(++i); } return new X500Principal(dn).getName(X500Principal.RFC2253); } }