Java tutorial
/******************************************************************************* * 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. *******************************************************************************/ package org.apache.ofbiz.base.util; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintStream; import java.io.Reader; import java.io.StringReader; import java.net.URL; import java.security.GeneralSecurityException; import java.security.KeyFactory; import java.security.KeyStore; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.Principal; import java.security.PrivateKey; import java.security.cert.Certificate; import java.security.cert.CertificateEncodingException; import java.security.cert.CertificateException; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; import java.security.spec.InvalidKeySpecException; import java.security.spec.PKCS8EncodedKeySpec; import java.util.Collection; import java.util.HashMap; import java.util.Map; import org.apache.commons.codec.binary.Base64; import org.apache.ofbiz.base.component.ComponentConfig; import org.apache.ofbiz.base.config.GenericConfigException; /** * KeyStoreUtil - Utilities for getting KeyManagers and TrustManagers * */ public final class KeyStoreUtil { public static final String module = KeyStoreUtil.class.getName(); private KeyStoreUtil() { } public static void storeComponentKeyStore(String componentName, String keyStoreName, KeyStore store) throws IOException, GenericConfigException, NoSuchAlgorithmException, CertificateException, KeyStoreException { ComponentConfig.KeystoreInfo ks = ComponentConfig.getKeystoreInfo(componentName, keyStoreName); File file = FileUtil.getFile(ks.createResourceHandler().getFullLocation()); FileOutputStream out = new FileOutputStream(file); try { store.store(out, ks.getPassword().toCharArray()); } finally { out.close(); } } public static KeyStore getComponentKeyStore(String componentName, String keyStoreName) throws IOException, GeneralSecurityException, GenericConfigException { ComponentConfig.KeystoreInfo ks = ComponentConfig.getKeystoreInfo(componentName, keyStoreName); return getStore(ks.createResourceHandler().getURL(), ks.getPassword(), ks.getType()); } public static KeyStore getStore(URL url, String password) throws IOException, GeneralSecurityException { return getStore(url, password, "jks"); } public static KeyStore getStore(URL url, String password, String type) throws IOException, GeneralSecurityException { if (type == null) { throw new IOException("Invalid keystore type; null"); } KeyStore ks = KeyStore.getInstance(type); InputStream in = url.openStream(); try { ks.load(in, password.toCharArray()); } finally { in.close(); } return ks; } public static KeyStore getSystemTrustStore() throws IOException, GeneralSecurityException { String javaHome = System.getProperty("java.home"); String fileName = System.getProperty("javax.net.ssl.trustStore"); String password = System.getProperty("javax.net.ssl.trustStorePassword"); if (password == null) { password = "changeit"; } KeyStore ks = KeyStore.getInstance("jks"); File keyFile = null; if (fileName != null) { keyFile = FileUtil.getFile(fileName); } else { keyFile = FileUtil.getFile(javaHome + "/lib/security/jssecacerts"); if (!keyFile.exists() || !keyFile.canRead()) { keyFile = FileUtil.getFile(javaHome + "/lib/security/cacerts"); } } if (keyFile.exists() && keyFile.canRead()) { InputStream in = new FileInputStream(keyFile); try { ks.load(in, password.toCharArray()); } finally { in.close(); } } else { ks.load(null, "changeit".toCharArray()); } return ks; } public static X509Certificate readCertificate(byte[] certChain) throws CertificateException { CertificateFactory cf = CertificateFactory.getInstance("X.509"); ByteArrayInputStream bais = new ByteArrayInputStream(certChain); return (X509Certificate) cf.generateCertificate(bais); } public static Map<String, String> getCertX500Map(java.security.cert.X509Certificate cert) { return getX500Map(cert.getSubjectX500Principal()); } public static Map<String, String> getCertX500Map(javax.security.cert.X509Certificate cert) { return getX500Map(cert.getSubjectDN()); } public static Map<String, String> getX500Map(Principal x500) { Map<String, String> x500Map = new HashMap<String, String>(); String name = x500.getName().replaceAll("\\\\,", "&com;"); String[] x500Opts = name.split("\\,"); for (String opt : x500Opts) { if (opt.indexOf("=") > -1) { String[] nv = opt.split("\\=", 2); x500Map.put(nv[0].replaceAll("&com;", ","), nv[1].replaceAll("&com;", ",")); } } return x500Map; } public static void importPKCS8CertChain(KeyStore ks, String alias, byte[] keyBytes, String keyPass, byte[] certChain) throws InvalidKeySpecException, NoSuchAlgorithmException, CertificateException, KeyStoreException { // load the private key KeyFactory kf = KeyFactory.getInstance("RSA"); PKCS8EncodedKeySpec keysp = new PKCS8EncodedKeySpec(keyBytes); PrivateKey pk = kf.generatePrivate(keysp); // load the cert chain CertificateFactory cf = CertificateFactory.getInstance("X.509"); ByteArrayInputStream bais = new ByteArrayInputStream(certChain); Collection<? extends Certificate> certCol = cf.generateCertificates(bais); Certificate[] certs = new Certificate[certCol.toArray().length]; if (certCol.size() == 1) { Debug.logInfo("Single certificate; no chain", module); bais = new ByteArrayInputStream(certChain); Certificate cert = cf.generateCertificate(bais); certs[0] = cert; } else { Debug.logInfo("Certificate chain length : " + certCol.size(), module); certs = certCol.toArray(new Certificate[certCol.size()]); } ks.setKeyEntry(alias, pk, keyPass.toCharArray(), certs); } public static String certToString(Certificate cert) throws CertificateEncodingException { byte[] certBuf = cert.getEncoded(); StringBuilder buf = new StringBuilder(); buf.append("-----BEGIN CERTIFICATE-----\n"); buf.append(new String(Base64.encodeBase64Chunked(certBuf))); buf.append("\n-----END CERTIFICATE-----\n"); return buf.toString(); } public static Certificate pemToCert(String certString) throws IOException, CertificateException { return pemToCert(new StringReader(certString)); } public static Certificate pemToCert(File certFile) throws IOException, CertificateException { return pemToCert(new FileInputStream(certFile)); } public static Certificate pemToCert(InputStream is) throws IOException, CertificateException { return pemToCert(new InputStreamReader(is)); } public static Certificate pemToCert(Reader r) throws IOException, CertificateException { String header = "-----BEGIN CERTIFICATE-----"; String footer = "-----END CERTIFICATE-----"; BufferedReader reader = new BufferedReader(r); ByteArrayOutputStream baos = new ByteArrayOutputStream(); PrintStream ps = new PrintStream(baos); String line; // ignore up to the header while ((line = reader.readLine()) != null && !line.equals(header)) { } // no header found if (line == null) { throw new IOException("Error reading certificate, missing BEGIN boundary"); } // in between the header and footer is the actual certificate while ((line = reader.readLine()) != null && !line.equals(footer)) { line = line.replaceAll("\\s", ""); ps.print(line); } // no footer found if (line == null) { throw new IOException("Error reading certificate, missing END boundary"); } ps.close(); // decode the buffer to a X509Certificate CertificateFactory cf = CertificateFactory.getInstance("X.509"); byte[] certBytes = Base64.decodeBase64(baos.toByteArray()); return cf.generateCertificate(new ByteArrayInputStream(certBytes)); } public static String pemToPkHex(String certString) throws IOException, CertificateException { Certificate cert = pemToCert(certString); return StringUtil.toHexString(cert.getPublicKey().getEncoded()); } }