Example usage for java.security KeyPairGenerator getInstance

Introduction

In this page you can find the example usage for java.security KeyPairGenerator getInstance.

Prototype

public static KeyPairGenerator getInstance(String algorithm, Provider provider)
        throws NoSuchAlgorithmException 

Source Link

Document

Returns a KeyPairGenerator object that generates public/private key pairs for the specified algorithm.

Usage

From source file:edu.vt.middleware.crypt.CryptProvider.java

/**
 * <p>This finds a <code>KeyPairGenerator</code> using the known providers and
 * the supplied algorithm parameter.</p>
 *
 * @param  algorithm  <code>String</code> name
 *
 * @return  <code>KeyPairGenerator</code>
 *
 * @throws  CryptException  if the algorithm is not available from any
 * provider or if the provider is not available in the environment
 *//*  w w  w  .ja  v  a 2  s .c o  m*/
public static KeyPairGenerator getKeyPairGenerator(final String algorithm) throws CryptException {
    final Log logger = LogFactory.getLog(CryptProvider.class);
    KeyPairGenerator generator = null;
    for (int i = 0; i < providers.length; i++) {
        try {
            generator = KeyPairGenerator.getInstance(algorithm, providers[i]);
        } catch (NoSuchAlgorithmException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Could not find algorithm " + algorithm + " in " + providers[i]);
            }
        } catch (NoSuchProviderException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Could not find provider " + providers[i]);
            }
        } finally {
            if (generator != null) {
                break;
            }
        }
    }
    if (generator == null) {
        try {
            generator = KeyPairGenerator.getInstance(algorithm);
        } catch (NoSuchAlgorithmException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Could not find algorithm " + algorithm);
            }
            throw new CryptException(e.getMessage());
        }
    }
    return generator;
}

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From source file:org.cesecore.keys.util.KeyStoreTools.java

private void generateExtraEC(final String name, final String keyEntryName, final String algInstanceName,
        final String sigAlgName) throws InvalidAlgorithmParameterException {
    if (log.isTraceEnabled()) {
        log.trace(">generate " + algInstanceName + ": curve name " + name + ", keyEntryName " + keyEntryName);
    }//  w w w  . j a v a  2s . co  m
    // Generate the EC Keypair
    KeyPairGenerator kpg;
    try {
        kpg = KeyPairGenerator.getInstance(algInstanceName, this.providerName);
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalStateException("Algorithm " + name + "was not recognized.", e);
    } catch (NoSuchProviderException e) {
        throw new IllegalStateException("BouncyCastle was not found as a provider.", e);
    }
    try {
        ECGenParameterSpec ecSpec = new ECGenParameterSpec(name);
        kpg.initialize(ecSpec);
    } catch (InvalidAlgorithmParameterException e) {
        log.debug("EC " + algInstanceName + " name " + name + " not supported.");
        throw e;
    }
    generateKeyPair(kpg, keyEntryName, sigAlgName);
    if (log.isTraceEnabled()) {
        log.trace("<generate: curve name " + name + ", keyEntryName " + keyEntryName);
    }
}

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From source file:org.ejbca.util.keystore.KeyStoreContainerBase.java

@Override
public byte[] generate(final AlgorithmParameterSpec spec, final String keyEntryName) throws Exception {
    if (log.isTraceEnabled()) {
        log.trace(">generate from AlgorithmParameterSpec: " + spec.getClass().getName());
    }/*  w w w.  j a va 2  s.  c o m*/
    // Generate the Keypair
    String algorithm = "EC";
    String sigAlg = "SHA1withECDSA";
    String specName = spec.getClass().getName();
    if (specName.contains("DSA")) {
        algorithm = "DSA";
        sigAlg = "SHA1withDSA";
    } else if (specName.contains("RSA")) {
        algorithm = "RSA";
        sigAlg = "SHA1withRSA";
    }
    final KeyPairGenerator kpg = KeyPairGenerator.getInstance(algorithm, this.providerName);
    try {
        kpg.initialize(spec);
    } catch (InvalidAlgorithmParameterException e) {
        log.debug("Algorithm parameters not supported: " + e.getMessage());
        throw e;
    }
    final byte result[] = generate(kpg, keyEntryName, sigAlg);
    if (log.isTraceEnabled()) {
        log.trace("<generate from AlgorithmParameterSpec: " + spec.getClass().getName());
    }
    return result;
}

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From source file:com.thoughtworks.go.security.X509CertificateGenerator.java

private KeyPair generateKeyPair() {
    try {/*  ww  w.  j  a  va 2s  .com*/
        return KeyPairGenerator.getInstance("RSA", "BC").generateKeyPair();
    } catch (Exception e) {
        throw bomb("Couldn't create public-private key pair", e);
    }
}

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From source file:org.kse.gui.dialogs.sign.DSignJar.java

public static void main(String[] args) throws Exception {
    UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    Security.addProvider(new BouncyCastleProvider());

    java.awt.EventQueue.invokeLater(new Runnable() {

        @Override// w w w. ja v  a  2  s.c om
        public void run() {
            try {
                KeyPairGenerator kpg = KeyPairGenerator.getInstance(KeyPairType.RSA.jce(), "BC");
                kpg.initialize(1024, new SecureRandom());
                KeyPair kp = kpg.generateKeyPair();
                DSignJar dialog = new DSignJar(new JFrame(), kp.getPrivate(), KeyPairType.RSA, "signature name",
                        null);
                dialog.addWindowListener(new java.awt.event.WindowAdapter() {
                    @Override
                    public void windowClosing(java.awt.event.WindowEvent e) {
                        System.exit(0);
                    }

                    @Override
                    public void windowDeactivated(WindowEvent e) {
                        System.exit(0);
                    }
                });
                dialog.setVisible(true);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}

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From source file:org.cesecore.keys.util.KeyStoreTools.java

private void generateRSA(final int keySize, final String keyEntryName) {
    if (log.isTraceEnabled()) {
        log.trace(">generate: keySize " + keySize + ", keyEntryName " + keyEntryName);
    }//  w w  w  . j av  a  2s  .co  m
    // Generate the RSA Keypair
    KeyPairGenerator kpg;
    try {
        kpg = KeyPairGenerator.getInstance("RSA", this.providerName);
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalStateException("Algorithm " + "RSA" + "was not recognized.", e);
    } catch (NoSuchProviderException e) {
        throw new IllegalStateException("BouncyCastle was not found as a provider.", e);
    }
    kpg.initialize(keySize);
    generateKeyPair(kpg, keyEntryName, "SHA1withRSA");
    if (log.isTraceEnabled()) {
        log.trace("<generate: keySize " + keySize + ", keyEntryName " + keyEntryName);
    }
}

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From source file:nl.afas.cordova.plugin.secureLocalStorage.SecureLocalStorage.java

@TargetApi(18)
private KeyStore initKeyStore() throws SecureLocalStorageException {
    try {//from w  ww . jav  a  2s  .  c o  m
        KeyStore keyStore = KeyStore.getInstance("AndroidKeyStore");
        keyStore.load(null);

        if (!keyStore.containsAlias(SECURELOCALSTORAGEALIAS)) {

            Calendar start = Calendar.getInstance();
            Calendar end = Calendar.getInstance();
            end.add(Calendar.YEAR, 3);

            KeyPairGeneratorSpec spec = new KeyPairGeneratorSpec.Builder(_cordova.getActivity())
                    .setAlias(SECURELOCALSTORAGEALIAS)
                    .setSubject(new X500Principal(String.format("CN=%s, O=%s", "SecureLocalStorage",
                            _cordova.getActivity().getBaseContext().getPackageName())))
                    .setSerialNumber(BigInteger.ONE).setStartDate(start.getTime()).setEndDate(end.getTime())
                    .build();
            KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "AndroidKeyStore");
            generator.initialize(spec);

            generator.generateKeyPair();
        }

        return keyStore;
    } catch (Exception e) {
        throw new SecureLocalStorageException("Could not initialize keyStore", e);
    }
}

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From source file:org.apache.cloudstack.utils.auth.SAMLUtils.java

public static KeyPair generateRandomKeyPair() throws NoSuchProviderException, NoSuchAlgorithmException {
    Security.addProvider(new BouncyCastleProvider());
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA", "BC");
    keyPairGenerator.initialize(2048, new SecureRandom());
    return keyPairGenerator.generateKeyPair();
}

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From source file:com.eucalyptus.crypto.DefaultCryptoProvider.java

/**
 * @see com.eucalyptus.crypto.CertificateProvider#generateKeyPair()
 *///from ww  w .  j av  a 2s.c  o  m
@Override
public KeyPair generateKeyPair() {
    KeyPairGenerator keyGen = null;
    try {
        EventRecord.caller(DefaultCryptoProvider.class, EventType.GENERATE_KEYPAIR);
        keyGen = KeyPairGenerator.getInstance(KEY_ALGORITHM, PROVIDER);
        SecureRandom random = Crypto.getSecureRandomSupplier().get();
        //TODO: RELEASE: see line:110
        keyGen.initialize(KEY_SIZE, random);
        KeyPair keyPair = keyGen.generateKeyPair();
        return keyPair;
    } catch (Exception e) {
        LOG.fatal(e, e);
        return null;
    }
}

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From source file:org.signserver.server.cryptotokens.KeystoreCryptoTokenTest.java

/**
 * Tests that a worker just set up with a key store containing a new
 * key-pair and is activated manually gets status ACTIVE.
 * @throws Exception/*from w  ww  .  j a  v a  2s .com*/
 */
public void testActivateWithNewKeystore() throws Exception {
    LOG.info("testActivateWithNewKeystore");

    final boolean autoActivate = false;

    final int workerId = WORKER_CMS;
    try {
        setCMSSignerPropertiesCombined(workerId, autoActivate);

        // Create a key-pair and certificate in the keystore
        FileOutputStream out = null;
        try {
            KeyStore ks = KeyStore.getInstance("PKCS12", "BC");
            ks.load(null, null);

            // Generate key and issue certificate
            final KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", "BC");
            kpg.initialize(1024);
            final KeyPair keyPair = kpg.generateKeyPair();
            X509Certificate[] chain = new X509Certificate[1];
            chain[0] = getSelfCertificate("CN=TestActivateWithNewKeystore" + ", C=SE",
                    (long) 30 * 24 * 60 * 60 * 365, keyPair);
            ks.setKeyEntry("newkey11", keyPair.getPrivate(), pin.toCharArray(), chain);

            out = new FileOutputStream(keystoreFile);
            ks.store(out, pin.toCharArray());
        } finally {
            IOUtils.closeQuietly(out);
        }

        workerSession.setWorkerProperty(workerId, "DEFAULTKEY", "newkey11");
        workerSession.reloadConfiguration(workerId);

        // Activate first so we can generate a key
        workerSession.activateSigner(workerId, pin);

        List<String> errors = workerSession.getStatus(workerId).getFatalErrors();
        assertTrue("Fatal errors: " + errors, workerSession.getStatus(workerId).getFatalErrors().isEmpty());

    } finally {
        FileUtils.deleteQuietly(keystoreFile);
        removeWorker(workerId);
    }
}

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