opcur/src/main/java/at/acdp/opcur/ExampleKeys.java

package at.acdp.opcur;
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 * Copyright (c) 2005-2015 The OPC Foundation, Inc. All rights reserved.
 *
 * OPC Foundation MIT License 1.00
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
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import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.Certificate;
import java.security.cert.CertificateEncodingException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.security.interfaces.RSAPrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.InvalidParameterSpecException;

import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;

import org.opcfoundation.ua.common.ServiceResultException;
import org.opcfoundation.ua.transport.security.Cert;
import org.opcfoundation.ua.transport.security.KeyPair;
import org.opcfoundation.ua.transport.security.PrivKey;
import org.opcfoundation.ua.utils.CertificateUtils;
import org.opcfoundation.ua.utils.CryptoUtil;

/**
 * Keys for examples
 * Keystore.p12 contains 20 RSA keypairs with the following aliases
 *
 * alias               dname
 *
 * server_8192         CN=server
 * server_4096         CN=server
 * server_2048         CN=server
 * server_1024         CN=server
 * server_512          CN=server
 *
 * client_8192         CN=client
 * client_4096         CN=client
 * client_2048         CN=client
 * client_1024         CN=client
 * client_512          CN=client
 *
 * https_server_8192   CN=https_server
 * https_server_4096   CN=https_server
 * https_server_2048   CN=https_server
 * https_server_1024   CN=https_server
 * https_server_512    CN=https_server
 *
 * https_client_8192   CN=https_client
 * https_client_4096   CN=https_client
 * https_client_2048   CN=https_client
 * https_client_1024   CN=https_client
 * https_client_512    CN=https_client
 *
 * Keystore password is "password".
 * Private key passwords are "password".
 *
 */
public class ExampleKeys {
    /**
     * Load file certificate and private key from applicationName.der & .pfx - or create ones if they do not exist
     * @return the KeyPair composed of the certificate and private key
     * @throws ServiceResultException
     */
    public static KeyPair getCert(String applicationName)
            throws ServiceResultException
    {
        File certFile = new File(applicationName + ".der");
        File privKeyFile =  new File(applicationName+ ".pem");
        try {
            Cert myCertificate = Cert.load( certFile );
            PrivKey myPrivateKey = PrivKey.load( privKeyFile);
            return new KeyPair(myCertificate, myPrivateKey);
        } catch (CertificateException e) {
            throw new ServiceResultException( e );
        } catch (IOException e) {
            try {
                String hostName = InetAddress.getLocalHost().getHostName();
                String applicationUri = "urn:"+hostName+":"+applicationName;
                KeyPair keys = CertificateUtils.createApplicationInstanceCertificate(applicationName, null, applicationUri, 3650, hostName);
                keys.getCertificate().save(certFile);
                keys.getPrivateKey().save(privKeyFile);
                return keys;
            } catch (Exception e1) {
                throw new ServiceResultException( e1 );
            }
        } catch (NoSuchAlgorithmException e) {
            throw new ServiceResultException( e );
        } catch (InvalidKeySpecException e) {
            throw new ServiceResultException( e );
        }
    }

    /**
     * Load CA certificate and private key from SampleCA.der & .pfx - or create ones if they do not exist
     * @return the KeyPair composed of the certificate and private key
     * @throws ServiceResultException
     */
    public static KeyPair getCACert()
            throws ServiceResultException
    {
        File certFile = new File("SampleCA.der");
        File privKeyFile =  new File("SampleCA.pem");
        try {
            Cert myCertificate = Cert.load( certFile );
            PrivKey myPrivateKey = PrivKey.load( privKeyFile);
            return new KeyPair(myCertificate, myPrivateKey);
        } catch (CertificateException e) {
            throw new ServiceResultException( e );
        } catch (IOException e) {
            try {
                KeyPair keys = CertificateUtils.createIssuerCertificate("SampleCA", 3650, null);
                keys.getCertificate().save(certFile);
                keys.getPrivateKey().save(privKeyFile);
                return keys;
            } catch (Exception e1) {
                throw new ServiceResultException( e1 );
            }
        } catch (NoSuchAlgorithmException e) {
            throw new ServiceResultException( e );
        } catch (InvalidKeySpecException e) {
            throw new ServiceResultException( e );
        }
    }
    /**
     * Load file certificate and private key from applicationName.der & .pfx - or create ones if they do not exist
     * @param applicationName
     * @return the KeyPair composed of the certificate and private key
     * @throws ServiceResultException
     */
    public static KeyPair getHttpsCert(String applicationName)
            throws ServiceResultException
    {
        File certFile = new File(applicationName + "_https.der");
        File privKeyFile =  new File(applicationName+ "_https.pem");
        try {
            Cert myCertificate = Cert.load( certFile );
            PrivKey myPrivateKey = PrivKey.load( privKeyFile);
            return new KeyPair(myCertificate, myPrivateKey);
        } catch (CertificateException e) {
            throw new ServiceResultException( e );
        } catch (IOException e) {
            try {
                KeyPair caCert = getCACert();
                String hostName = InetAddress.getLocalHost().getHostName();
                String applicationUri = "urn:"+hostName+":"+applicationName;
                KeyPair keys =   CertificateUtils.createHttpsCertificate(hostName, applicationUri, 3650, caCert);
                keys.getCertificate().save(certFile);
                keys.getPrivateKey().save(privKeyFile);
                return keys;
            } catch (Exception e1) {
                throw new ServiceResultException( e1 );
            }
        } catch (NoSuchAlgorithmException e) {
            throw new ServiceResultException( e );
        } catch (InvalidKeySpecException e) {
            throw new ServiceResultException( e );
        }
    }
    /**
     * Open keypair from keystore.p12 used in some of these examples.
     *
     * Usable aliases are : "server", "client", "https_server", "https_client"
     * Usable keysizes are : 8192, 4096, 2048, 1024
     *
     * @param alias
     * @param keysize
     * @return
     * @throws KeyStoreException
     * @throws IOException
     * @throws CertificateException
     * @throws NoSuchAlgorithmException
     * @throws UnrecoverableKeyException
     */
//    public static KeyPair getKeyPair(String alias, int keysize) throws ServiceResultException {
//        try {
//            Certificate cert = ks.getCertificate(alias+"_"+keysize);
//            Key key = ks.getKey(alias+"_"+keysize, "password".toCharArray());
//            KeyPair pair = new KeyPair( new Cert( (X509Certificate) cert ), new PrivKey( (RSAPrivateKey) key ) );
//            return pair;
//        } catch (KeyStoreException e) {
//            throw new ServiceResultException( e );
//        } catch (UnrecoverableKeyException e) {
//            throw new ServiceResultException( e );
//        } catch (NoSuchAlgorithmException e) {
//            throw new ServiceResultException( e );
//        } catch (CertificateEncodingException e) {
//            throw new ServiceResultException( e );
//        }
//    }

    //static KeyStore ks;

//    static {
//        try {
//            ks = KeyStore.getInstance("pkcs12");
//            InputStream is = ExampleKeys.class.getResourceAsStream("keystore.p12");
//            try {
//                ks.load( is, "password".toCharArray() );
//            } catch (NoSuchAlgorithmException e) {
//                throw new RuntimeException(e);
//            } catch (CertificateException e) {
//                throw new RuntimeException(e);
//            } catch (IOException e) {
//                throw new RuntimeException(e);
//            } finally {
//                try {
//                    is.close();
//                } catch (IOException e) {
//                }
//            }
//        } catch (KeyStoreException e) {
//            throw new RuntimeException(e);
//        }
//    }


}