Example usage for java.security KeyPairGenerator generateKeyPair

Introduction

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

Prototype

public KeyPair generateKeyPair()

Source Link

Document

Generates a key pair.

Usage

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 ww  . j  a  va2  s  .  c  o  m
        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();
            }
        }
    });
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    // Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDH", "BC");
    EllipticCurve curve = new EllipticCurve(
            new ECFieldFp(new BigInteger("fffffffffffffffffffffffffffffffeffffffffffffffff", 16)),
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16),
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16));

    ECParameterSpec ecSpec = new ECParameterSpec(curve,
            new ECPoint(new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16),
                    new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16)),
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), 1);

    keyGen.initialize(ecSpec, new SecureRandom());

    KeyAgreement aKeyAgree = KeyAgreement.getInstance("ECDH", "BC");
    KeyPair aPair = keyGen.generateKeyPair();
    KeyAgreement bKeyAgree = KeyAgreement.getInstance("ECDH", "BC");
    KeyPair bPair = keyGen.generateKeyPair();

    aKeyAgree.init(aPair.getPrivate());//from w w  w .j a  va2 s . c om
    bKeyAgree.init(bPair.getPrivate());

    aKeyAgree.doPhase(bPair.getPublic(), true);
    bKeyAgree.doPhase(aPair.getPublic(), true);

    MessageDigest hash = MessageDigest.getInstance("SHA1", "BC");

    System.out.println(new String(hash.digest(aKeyAgree.generateSecret())));
    System.out.println(new String(hash.digest(bKeyAgree.generateSecret())));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDH", "BC");
    EllipticCurve curve = new EllipticCurve(
            new ECFieldFp(new BigInteger("fffffffffffffffffffffffffffffffeffffffffffffffff", 16)),
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16),
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16));

    ECParameterSpec ecSpec = new ECParameterSpec(curve,
            new ECPoint(new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16),
                    new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16)),
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), 1);

    keyGen.initialize(ecSpec, new SecureRandom());

    KeyAgreement aKeyAgree = KeyAgreement.getInstance("ECDH", "BC");
    KeyPair aPair = keyGen.generateKeyPair();
    KeyAgreement bKeyAgree = KeyAgreement.getInstance("ECDH", "BC");
    KeyPair bPair = keyGen.generateKeyPair();

    aKeyAgree.init(aPair.getPrivate());//  w  ww  .j  ava  2  s.  c  om
    bKeyAgree.init(bPair.getPrivate());

    aKeyAgree.doPhase(bPair.getPublic(), true);
    bKeyAgree.doPhase(aPair.getPublic(), true);

    MessageDigest hash = MessageDigest.getInstance("SHA1", "BC");

    System.out.println(new String(hash.digest(aKeyAgree.generateSecret())));
    System.out.println(new String(hash.digest(bKeyAgree.generateSecret())));
}

From source file:MainClass.java

public static void createKey() throws Exception {
    KeyPairGenerator kpg = KeyPairGenerator.getInstance("DiffieHellman");

    kpg.initialize(512);//from   w w  w  .  j a v a 2 s.  com
    KeyPair kp = kpg.generateKeyPair();
    KeyFactory kfactory = KeyFactory.getInstance("DiffieHellman");

    DHPublicKeySpec kspec = (DHPublicKeySpec) kfactory.getKeySpec(kp.getPublic(), DHPublicKeySpec.class);
}

From source file:MainClass.java

public static KeyPair generateRSAKeyPair() throws Exception {
    KeyPairGenerator kpGen = KeyPairGenerator.getInstance("RSA", "BC");
    kpGen.initialize(1024, new SecureRandom());
    return kpGen.generateKeyPair();
}

From source file:com.streamreduce.util.CAGenerator.java

public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(1024);//  w  w w .  j a  v a2s. co m
    return keyGen.generateKeyPair();
}

From source file:com.floreantpos.license.FiveStarPOSKeyGenerator.java

public static void createKeys(String publicKeyUri, String privateKeyUri)
        throws NoSuchAlgorithmException, IOException {

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(1024, new SecureRandom());
    KeyPair keyPair = keyGen.generateKeyPair();

    IOUtils.write(keyPair.getPublic().getEncoded(), new FileOutputStream(publicKeyUri));
    IOUtils.write(keyPair.getPrivate().getEncoded(), new FileOutputStream(privateKeyUri));

}

From source file:com.java.demo.RsaDemo.java

public static void Init() {
    try {//w ww  .  ja  va2 s . c o m
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(512);
        KeyPair kp = keyPairGenerator.generateKeyPair();
        rSAPublicKey = (RSAPublicKey) kp.getPublic();
        rSAPrivateKey = (RSAPrivateKey) kp.getPrivate();
    } catch (Exception ex) {
        System.out.println("com.Java.Demo.RsaDemo.Init()" + ex.getMessage());
    }
}

From source file:Main.java

@SuppressLint("NewApi")
public static KeyPair generateRsaPairWithGenerator(Context ctx, String alais)
        throws InvalidAlgorithmParameterException, NoSuchProviderException, NoSuchAlgorithmException {
    Calendar notBefore = Calendar.getInstance();
    Calendar notAfter = Calendar.getInstance();
    notAfter.add(1, Calendar.YEAR);
    KeyPairGeneratorSpec spec = new KeyPairGeneratorSpec.Builder(ctx).setAlias(alais)
            .setSubject(new X500Principal(String.format("CN=%s, OU=%s", alais, ctx.getPackageName())))
            .setSerialNumber(BigInteger.ONE).setStartDate(notBefore.getTime()).setEndDate(notAfter.getTime())
            .build();//from   w ww .  ja v a 2  s . c  o m

    KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("RSA", "AndroidKeyStore");
    kpGenerator.initialize(spec);
    KeyPair kp = kpGenerator.generateKeyPair();

    return kp;
}

From source file:MainClass.java

public static void createSpecificKey(BigInteger p, BigInteger g) throws Exception {
    KeyPairGenerator kpg = KeyPairGenerator.getInstance("DiffieHellman");

    DHParameterSpec param = new DHParameterSpec(p, g);
    kpg.initialize(param);/*w  w w .  jav a 2  s .  c  o m*/
    KeyPair kp = kpg.generateKeyPair();

    KeyFactory kfactory = KeyFactory.getInstance("DiffieHellman");

    DHPublicKeySpec kspec = (DHPublicKeySpec) kfactory.getKeySpec(kp.getPublic(), DHPublicKeySpec.class);
}