/**
     * Returns an {@code EncryptedPrivateKeyInfo} from a given PrivateKey.
     * A valid password-based encryption (PBE) algorithm and password must be
     * specified.  AlgorithmParameterSpec, {@code params}, will use the
     * provider default if {@code null} is passed.  If {@code provider} is
     * {@code null}, the provider will be selected through the default
     * provider list.
     * <p>
     * The PBE algorithm string format details can be found in the
     * <a href="{@docRoot}/../specs/security/standard-names.html#cipher-algorithms">
     * Cipher section</a> of the Java Security Standard Algorithm Names
     * Specification.
     *
     * @param key the PrivateKey object to encrypt.
     * @param password the password used for generating the PBE key.
     * @param algorithm the PBE encryption algorithm.
     * @param params the parameters used with the PBE encryption.
     * @param provider the Provider that will perform the encryption.
     * @return an EncryptedPrivateKeyInfo.
     * @throws IllegalArgumentException when arguments passed are incorrect.
     * @throws SecurityException on a cryptographic errors.
     * @throws NullPointerException if an argument passed in is unexpectedly null.
     *
     * @since 24
     */
    @PreviewFeature(feature = PreviewFeature.Feature.PEM_API)
    public static EncryptedPrivateKeyInfo encryptKey(PrivateKey key,
        char[] password, String algorithm, AlgorithmParameterSpec params,
        Provider provider) {


    /**
     * Creates and encrypts an `EncryptedPrivateKeyInfo` from a given PrivateKey
     * and password.
     * <p>
     * The encryption uses the algorithm set by `jdk.epkcs8.defaultAlgorithm`
     * Security Property by the default provider and default the
     * AlgorithmParameterSpec of that provider.
     *
     * @param key The PrivateKey object to encrypt.
     * @param password the password used in the PBE encryption.
     * @return an EncryptedPrivateKeyInfo.
     * @throws IllegalArgumentException when arguments passed are incorrect.
     * @throws SecurityException on a cryptographic errors.
     *
     * @since 24
     */
    @PreviewFeature(feature = PreviewFeature.Feature.PEM_API)
    public static EncryptedPrivateKeyInfo encryptKey(PrivateKey key,
        char[] password) {


    /**
     * Return a PrivateKey from the encrypted data in the object.
     *
     * @param password the password used in the PBE encryption.
     * @return a PrivateKey
     * @throws InvalidKeyException if an error occurs during parsing of the
     * encrypted data or creation of the key object.
     *
     * @since 24
     */
    @PreviewFeature(feature = PreviewFeature.Feature.PEM_API)
    public PrivateKey getKey(char[] password) throws InvalidKeyException {


    /**
     * Return a PrivateKey from the object's encrypted data with a KeyFactory
     * from the given Provider.
     *
     * @param password the password
     * @param provider the KeyFactory provider used to generate the key.
     * @return a PrivateKey
     * @throws InvalidKeyException if an error occurs during parsing of the
     * encrypted data or creation of the key object.
     *
     * @since 24
     */
    @PreviewFeature(feature = PreviewFeature.Feature.PEM_API)
    public PrivateKey getKey(char[] password, Provider provider)
        throws InvalidKeyException {