Examples of java.security.KeyPairGenerator.initialize()

java.security.KeyPairGenerator.initialize()
Initializes the key pair generator for a certain keysize using a default parameter set and the SecureRandom implementation of the highest-priority installed provider as the source of randomness. (If none of the installed providers supply an implementation of SecureRandom, a system-provided source of randomness is used.) @param keysize the keysize. This is analgorithm-specific metric, such as modulus length, specified in number of bits. @exception InvalidParameterException if the keysize is notsupported by this KeyPairGenerator object.

  private int keySize = SymmetricCryptor.DEFAULT_KEY_BITS;


  public byte[] createPublicKey() throws CryptoException {
    try {
      KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM);
      keyGen.initialize(DH_SPEC);
      KeyPair keypair = keyGen.generateKeyPair();


      privateKey = keypair.getPrivate();
      PublicKey publicKey = keypair.getPublic();

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    throws Exception
  {
    KeyPairGenerator  kg = KeyPairGenerator.getInstance( "RSA" );
    
    kg.initialize(strength, RandomUtils.SECURE_RANDOM );


    KeyPair pair = kg.generateKeyPair();
          
    X509V3CertificateGenerator certificateGenerator = 
      new X509V3CertificateGenerator();

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  {
    try
    {
      KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDSA", "BC");
      
      keyGen.initialize(ECCparam);


      return keyGen.genKeyPair();
      
    }catch(Throwable e){

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     */
    public void generate(int bits) {
        try {
            // Initialize the generator
            KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
            keyGen.initialize(bits, Utils.getRND());


            KeyPair pair = keyGen.generateKeyPair();


            // Get the keys and set
            setPrivateKey(new SshRsaPrivateKey(

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     */
    public void generate(int bits) {
        try {
            // Initialize the generator
            KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
            keyGen.initialize(bits, Utils.getRND());


            KeyPair pair = keyGen.generateKeyPair();


            // Get the keys
            DSAPrivateKey prvKey = (DSAPrivateKey) pair.getPrivate();

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   @Test
   public void testManualFail() throws Exception
   {
      KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
      kpg.initialize(1024);
      KeyPair keyPair = kpg.genKeyPair();


      Verifier verifier = new Verifier();
      Verification verification = verifier.addNew();
      verification.setKey(keyPair.getPublic());

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  return sign.verify(signBuffer);
    }
    
    public KeyPair genKeyPair() throws NoSuchAlgorithmException {
  KeyPairGenerator kpg = KeyPairGenerator.getInstance(algorithm);
  kpg.initialize(bitkey);
  return kpg.generateKeyPair();  
    }


    
    public static void main(String[] args) {

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            //SecureRandom random = SecureRandom.getInstance("SHA1PRNG",
            // "SUN");
            //initialize(int keysize, SecureRandom random)


            generator.initialize(SOSKeyGenerator.keyLenght, new SecureRandom());
            //generator.initialize(this.keyLenght);


            KeyPair keys = generator.generateKeyPair();


            return keys;

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  protected KeyPair generateKeyPair() {
    KeyPair keyPair = null;
    DHParameterSpec keySpec = new DHParameterSpec(DH_MODULUS, DH_BASE);
    try {
      KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH");
      keyGen.initialize(keySpec);
      keyPair = keyGen.generateKeyPair();
      keyAgreement = KeyAgreement.getInstance("DH");
      keyAgreement.init(keyPair.getPrivate());
    } catch (Exception e) {
      JFLog.log("Error generating keypair", e);

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        return cipher.doFinal(inpBytes);
    }


    public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
        KeyPairGenerator kpg = KeyPairGenerator.getInstance(algorithm);
        kpg.initialize(2048, new SecureRandom());


        return kpg.generateKeyPair();
    }


    public static byte[] serializeKeyPair(KeyPair keyPair) throws IOException {

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