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.

        // Testing ECIES with default curve in streaming mode
        KeyPairGenerator    g = KeyPairGenerator.getInstance("EC", "BC");
        doTest("ECIES with default", g, "ECIES", params);
        
        // Testing ECIES with 192-bit curve in streaming mode 
        g.initialize(192, new SecureRandom());
        doTest("ECIES with 192-bit", g, "ECIES", params);


        // Testing ECIES with 256-bit curve in streaming mode 
        g.initialize(256, new SecureRandom());
        doTest("ECIES with 256-bit", g, "ECIES", params);

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        // Testing ECIES with 192-bit curve in streaming mode 
        g.initialize(192, new SecureRandom());
        doTest("ECIES with 192-bit", g, "ECIES", params);


        // Testing ECIES with 256-bit curve in streaming mode 
        g.initialize(256, new SecureRandom());
        doTest("ECIES with 256-bit", g, "ECIES", params);


        
        c1 = new IESCipher(new IESEngine(new ECDHBasicAgreement(), 
                new KDF2BytesGenerator(new SHA1Digest()),

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        // Testing ECIES with default curve using DES
        g = KeyPairGenerator.getInstance("EC", "BC");
        doTest("default", g, "ECIESwithDESEDE", params);
        
        // Testing ECIES with 192-bit curve using DES
        g.initialize(192, new SecureRandom());
        doTest("192-bit", g, "ECIESwithDESEDE", params);
        
        // Testing ECIES with 256-bit curve using DES
        g.initialize(256, new SecureRandom());
        doTest("256-bit", g, "ECIESwithDESEDE", params);

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        // Testing ECIES with 192-bit curve using DES
        g.initialize(192, new SecureRandom());
        doTest("192-bit", g, "ECIESwithDESEDE", params);
        
        // Testing ECIES with 256-bit curve using DES
        g.initialize(256, new SecureRandom());
        doTest("256-bit", g, "ECIESwithDESEDE", params);
           
        
        c1 = new org.bouncycastle.jcajce.provider.asymmetric.ec.IESCipher.ECIESwithAES();
        c2 = new org.bouncycastle.jcajce.provider.asymmetric.ec.IESCipher.ECIESwithAES();

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        // Testing ECIES with default curve using AES 
        g = KeyPairGenerator.getInstance("EC", "BC");
        doTest("default", g, "ECIESwithAES", params);
        
        // Testing ECIES with 192-bit curve using AES
        g.initialize(192, new SecureRandom());
        doTest("192-bit", g, "ECIESwithAES", params);
        
        // Testing ECIES with 256-bit curve using AES
        g.initialize(256, new SecureRandom());
        doTest("256-bit", g, "ECIESwithAES", params);

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        // Testing ECIES with 192-bit curve using AES
        g.initialize(192, new SecureRandom());
        doTest("192-bit", g, "ECIESwithAES", params);
        
        // Testing ECIES with 256-bit curve using AES
        g.initialize(256, new SecureRandom());
        doTest("256-bit", g, "ECIESwithAES", params);
        
    }


    public void doTest(

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    private void testNoExtraLocalKeyID(byte[] store1data)
        throws Exception
    {
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", "BC");


        kpg.initialize(512);


        KeyPair newPair = kpg.genKeyPair();


        KeyStore store1 = KeyStore.getInstance("PKCS12", "BC");

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    {
        try
        {
            Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding", "BC");
            KeyPairGenerator fact = KeyPairGenerator.getInstance("RSA", "BC");
            fact.initialize(512, new SecureRandom());


            KeyPair keyPair = fact.generateKeyPair();


            PrivateKey  priKey = keyPair.getPrivate();
            PublicKey   pubKey = keyPair.getPublic();

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    {
        ECGenParameterSpec     ecSpec = new ECGenParameterSpec(name);


        KeyPairGenerator    g = KeyPairGenerator.getInstance("ECDH", "BC");


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


        //
        // a side
        //
        KeyPair aKeyPair = g.generateKeyPair();

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    {
        ECGenParameterSpec     ecSpec = new ECGenParameterSpec(name);


        KeyPairGenerator    g = KeyPairGenerator.getInstance("ECDSA", "BC");


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


        Signature sgr = Signature.getInstance("ECDSA", "BC");
        KeyPair   pair = g.generateKeyPair();
        PrivateKey sKey = pair.getPrivate();
        PublicKey vKey = pair.getPublic();

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