Java tutorial
/* * $HeadURL: http://juliusdavies.ca/svn/not-yet-commons-ssl/tags/commons-ssl-0.3.16/src/java/org/apache/commons/ssl/PEMItem.java $ * $Revision: 121 $ * $Date: 2007-11-13 21:26:57 -0800 (Tue, 13 Nov 2007) $ * * ==================================================================== * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.commons.ssl; import org.apache.kerby.util.Hex; import java.util.Collections; import java.util.Map; import java.util.StringTokenizer; import java.util.TreeMap; /** * @author Credit Union Central of British Columbia * @author <a href="http://www.cucbc.com/">www.cucbc.com</a> * @author <a href="mailto:juliusdavies@cucbc.com">juliusdavies@cucbc.com</a> * @since 13-Aug-2006 */ public class PEMItem { public static final String DEK_INFO = "dek-info"; private final byte[] derBytes; public final String pemType; public final Map properties; public final String dekInfo; public final byte[] iv; public final String cipher; public final boolean des2; public final String mode; public final int keySizeInBits; public PEMItem(byte[] derBytes, String type) { this(derBytes, type, null); } public PEMItem(byte[] derBytes, String type, Map properties) { this.derBytes = derBytes; this.pemType = type; if (properties == null) { properties = new TreeMap(); // empty map } this.properties = Collections.unmodifiableMap(properties); String di = (String) properties.get(DEK_INFO); String diCipher = ""; String diIV = ""; if (di != null) { StringTokenizer st = new StringTokenizer(di, ","); if (st.hasMoreTokens()) { diCipher = st.nextToken().trim().toLowerCase(); } if (st.hasMoreTokens()) { diIV = st.nextToken().trim().toLowerCase(); } } this.dekInfo = diCipher; this.iv = Hex.decode(diIV); if (!"".equals(diCipher)) { OpenSSL.CipherInfo cipherInfo = OpenSSL.lookup(diCipher); this.cipher = cipherInfo.javaCipher; this.mode = cipherInfo.blockMode; this.keySizeInBits = cipherInfo.keySize; this.des2 = cipherInfo.des2; } else { this.mode = ""; cipher = "UNKNOWN"; keySizeInBits = -1; des2 = false; } } public byte[] getDerBytes() { byte[] b = new byte[derBytes.length]; System.arraycopy(derBytes, 0, b, 0, derBytes.length); return b; } }