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The BSD License Copyright (c) 2010-2012 RIPE NCC All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of the RIPE NCC nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package net.ripe.rpki.commons.crypto.util;
 
 
 
 
 public final class KeyStoreUtil {
 
     private static final char[] KEYSTORE_PASSPHRASE = "4AD8A8BD-A001-4400-8DAC-5F3B97F07DE5".toCharArray();
 
     static final String KEYSTORE_KEY_ALIAS = "mykey1";
 
 
     private KeyStoreUtil() {
         //Utility classes should not have a public or default constructor.
     }
 
     public static KeyStore createKeyStoreForKeyPair(KeyPair keyPairString keyStoreProviderString signatureProviderString keyStoreType) {
         try {
             KeyStore keyStore = KeyStore.getInstance(keyStoreTypekeyStoreProvider);
             keyStore.load(null);
             keyStore.aliases();
             X509Certificate certificate = generateCertificate(keyPairsignatureProvider);
             keyStore.setKeyEntry(keyPair.getPrivate(), new Certificate[]{certificate});
             return keyStore;
         } catch (GeneralSecurityException e) {
             throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
         } catch (IOException e) {
             throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
         }
     }
 
     public static KeyPair getKeyPairFromKeyStore(byte[] keyStoreDataString keyStoreProviderString keyStoreType) {
         KeyStore keyStore = loadKeyStore(keyStoreDatakeyStoreProviderkeyStoreType);
         return getKeyPairFromKeyStore(keyStore);
     }
 
     public static byte[] storeKeyStore(KeyStore keyStore) {
         ByteArrayOutputStream keyStoreOS = new ByteArrayOutputStream();
         try {
             keyStore.store(keyStoreOS);
             keyStoreOS.flush();
             return keyStoreOS.toByteArray();
         } catch (GeneralSecurityException e) {
             throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
         } catch (IOException e) {
             throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
         }
     }
    public static KeyStore clearKeyStore(byte[] keyStoreDataString keyStoreProviderString keyStoreType) {
        KeyStore keyStore = loadKeyStore(keyStoreDatakeyStoreProviderkeyStoreType);
        clearKeyStore(keyStore);
        return keyStore;
    }
    private static KeyStore clearKeyStore(KeyStore keyStore) {
        try {
            if (keyStore.containsAlias()) {
                keyStore.deleteEntry();
                keyStore.store(ByteStreams.nullOutputStream(), );
            }
            return keyStore;
        } catch (GeneralSecurityException e) {
            throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
        } catch (IOException e) {
            throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
        }
    }
    private static KeyPair getKeyPairFromKeyStore(KeyStore keyStore) {
        try {
            Certificate certificate = keyStore.getCertificateChain()[0];
            PublicKey publicKey = certificate.getPublicKey();
            PrivateKey privateKey = (PrivateKeykeyStore.getKey();
            return new KeyPair(publicKeyprivateKey);
        } catch (GeneralSecurityException e) {
            throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
        }
    }
    private static KeyStore loadKeyStore(byte[] keyStoreDataString keyStoreProviderString keyStoreType) {
        try {
            KeyStore keyStore = KeyStore.getInstance(keyStoreTypekeyStoreProvider);
            keyStore.load(new ByteArrayInputStream(keyStoreData), );
            return keyStore;
        } catch (GeneralSecurityException e) {
            throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
        } catch (IOException e) {
            throw new net.ripe.rpki.commons.crypto.util.KeyStoreException(e);
        }
    }
    public static X509Certificate generateCertificate(KeyPair keyPairString signatureProvider) {
        X509v3CertificateBuilder builder = new JcaX509v3CertificateBuilder(
                new X500Principal("CN=issuer"),
                .,
                new DateTime().minusYears(2).toDate(),
                new DateTime().minusYears(1).toDate(),
                new X500Principal("CN=subject"),
                keyPair.getPublic());
        try {
            return new JcaX509CertificateConverter().getCertificate(builder.build(sigGen));
        } catch (OperatorCreationException e) {
            throw new RuntimeException(e);
        } catch (CertificateException e) {
            throw new RuntimeException(e);
        }
    }
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