Java tutorial
//package com.java2s; /* * ConnectBot: simple, powerful, open-source SSH client for Android * Copyright 2007 Kenny Root, Jeffrey Sharkey * * 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 java.security.NoSuchAlgorithmException; public class Main { static String getAlgorithmForOid(String oid) throws NoSuchAlgorithmException { if ("1.2.840.10045.2.1".equals(oid)) { return "EC"; } else if ("1.2.840.113549.1.1.1".equals(oid)) { return "RSA"; } else if ("1.2.840.10040.4.1".equals(oid)) { return "DSA"; } else { throw new NoSuchAlgorithmException("Unknown algorithm OID " + oid); } } }