Examples of java.security.KeyPairGenerator.generateKeyPair()

java.security.KeyPairGenerator.generateKeyPair()
Generates a key pair.
If this KeyPairGenerator has not been initialized explicitly, provider-specific defaults will be used for the size and other (algorithm-specific) values of the generated keys.
This will generate a new key pair every time it is called.
This method is functionally equivalent to {@link #genKeyPair() genKeyPair}. @return the generated key pair


    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 {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);

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            AlgorithmParameterGenerator paramGen = AlgorithmParameterGenerator.getInstance("DH");
            paramGen.init(512);


            KeyPairGenerator dh = KeyPairGenerator.getInstance("DH");
            dh.initialize(paramGen.generateParameters().getParameterSpec(DHParameterSpec.class));
            keyPair = dh.generateKeyPair();


            // send a half and get a half
            writeKey(keyPair.getPublic());
            otherHalf = KeyFactory.getInstance("DH").generatePublic(readKey());
        } else {

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        } else {
            otherHalf = KeyFactory.getInstance("DH").generatePublic(readKey());


            KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("DH");
            keyPairGen.initialize(((DHPublicKey) otherHalf).getParams());
            keyPair = keyPairGen.generateKeyPair();


            // send a half and get a half
            writeKey(keyPair.getPublic());
        }

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            keyGen = KeyPairGenerator.getInstance(algorithm);
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
        keyGen.initialize(keylength, new SecureRandom());
        return keyGen.generateKeyPair();
    }


    public static KeyStore loadKeystore() throws Exception {
        KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
        InputStream in = SignatureAlgorithmTest.class.getResourceAsStream("/bob.keystore");

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            keyGen = KeyPairGenerator.getInstance(algorithm);
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
        keyGen.initialize(keylength, new SecureRandom());
        return keyGen.generateKeyPair();
    }


    public static KeyStore loadKeystore() throws Exception {
        KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
        InputStream in = XmlSignatureTest.class.getResourceAsStream("/bob.keystore");

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            keyGen = KeyPairGenerator.getInstance(algorithm);
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
        keyGen.initialize(keylength, new SecureRandom());
        return keyGen.generateKeyPair();
    }


    public static KeyStore loadKeystore() throws Exception {
        KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
        InputStream in = SignatureDigestMethodTest.class.getResourceAsStream("/bob.keystore");

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      generator = KeyPairGenerator.getInstance(algorithm);
    } catch (NoSuchAlgorithmException e) {
      throw new IllegalStateException("Error loading crypto provider", e);
    }
    generator.initialize(keysize);
    KeyPair keyPair = generator.generateKeyPair();
    return keyPair;


  }


  public static SecretKey generateKey(String algorithm, int keysize) {

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      throw new OpsException("Error building keypair generator: " + algorithm, e);
    }
    if (keySize != null) {
      generator.initialize(keySize);
    }
    return generator.generateKeyPair();
  }


}

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            throw new UnsupportedTypeException(type);
        }
        try {
            KeyPairGenerator kg = KeyPairGenerator.getInstance(type.alg);
            kg.initialize(type.spec);
            return kg.generateKeyPair();
        } catch (NoSuchAlgorithmException e) {
            throw new Error(e); // Impossible?
        } catch (InvalidAlgorithmParameterException e) {
            throw new Error(e); // Impossible?
        }

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        keyGen.initialize(dhParams);


        testTwoParty(algName, size, privateValueSize, keyGen);


        KeyPair aKeyPair = keyGen.generateKeyPair();


        //
        // public key encoding test
        //
        byte[]              pubEnc = aKeyPair.getPublic().getEncoded();

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