public SSLContextBuilder loadKeyMaterial(

            final KeyStore keystore,

            final char[] keyPassword,

            final PrivateKeyStrategy aliasStrategy)

            throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException {

        final KeyManagerFactory kmfactory = KeyManagerFactory.getInstance(

                KeyManagerFactory.getDefaultAlgorithm());

        kmfactory.init(keystore, keyPassword);

        final KeyManager[] kms =  kmfactory.getKeyManagers();

        if (kms != null) {

            if (aliasStrategy != null) {

                for (int i = 0; i < kms.length; i++) {

                    final KeyManager km = kms[i];

                    if (km instanceof X509ExtendedKeyManager) {

                        kms[i] = new KeyManagerDelegate((X509ExtendedKeyManager) km, aliasStrategy);

                    }

                }

            }

            for (final KeyManager km : kms) {

                keymanagers.add(km);

            }

        }

        return this;

    }

    private KeyManager[] getKeyManagerFactory(String keystoreFile, String storePass) throws IOException, GeneralSecurityException {

        KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());



        InputStream is = null;

        try {

            is = new FileInputStream(keystoreFile);



            KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());

            ks.load(is, storePass.toCharArray());



            kmf.init(ks, storePass.toCharArray());



            return kmf.getKeyManagers();

        }

        finally {

            try {

                if (is != null) {

                    is.close();

                }

            }

            catch (IOException e) {

            }

        }

    }