* from memory.
     *
     * @return the password as a char array
     */
    public char[] getPasswordAsCharArray() {
        checkNotClosed();
        return this.password != null && this.password.length > 0 ? this.password.clone() : this.password == null ? null : new char[0];
    }

    /**
     * Securely wipes the password from memory
     */

        return hmac.digest();
    }

    /**
     * Generates the NT password hash for the given password.
     *
     * @param password the password to hash
     * @return nt password hash
     */
    public static byte[] getNTHash(final String password) {
        if (password == null) {
            throw new NullPointerException("Password parameter is required");
        }

* The **input model** needs to be able to have a password.
* The **output model** should not have a password.
* The **database model** would probably need to have a hashed password.

/// danger

Never store user's plaintext passwords. Always store a "secure hash" that you can then verify.

If you don't know, you will learn what a "password hash" is in the [security chapters](security/simple-oauth2.md#password-hashing){.internal-link target=_blank}.

///

# Simple OAuth2 with Password and Bearer { #simple-oauth2-with-password-and-bearer }

Now let's build from the previous chapter and add the missing parts to have a complete security flow.

## Get the `username` and `password` { #get-the-username-and-password }

We are going to use **FastAPI** security utilities to get the `username` and `password`.

        return ntResponse;
    }

    /**
     * Generates the NTOWFv1 hash for the given password.
     *
     * @param password the password to hash
     * @return the NTOWFv1 hash bytes
     */
    public static byte[] nTOWFv1(final String password) {
        if (password == null) {
            throw new RuntimeException("Password parameter is required");
        }
        try {
            final MD4 md4 = new MD4();

        }
    }

    // Test constructor with domain, username, and password
    @Test
    void testConstructorWithDomainUsernamePassword() {
        NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("DOMAIN", "user", "password");
        assertEquals("DOMAIN", auth.getDomain());
        assertEquals("user", auth.getUsername());
        assertEquals("password", auth.getPassword());
    }

     * the supplied password.
     *
     * @param type2 The Type-2 message.
     * @param password The password.
     * @return A <code>byte[]</code> containing the LanManager response.
     */
    public static byte[] getLMResponse(final Type2Message type2, final String password) {
        if (type2 == null || password == null) {
            return null;
        }

     * @param targetName
     *            SPN of the target system, optional
     * @param passwordHash
     *            The NT password hash, takes precedence over password (which is no longer required unless legacy LM
     *            authentication is needed)
     * @param password
     *            The password to use when constructing the response.
     * @param domain
     *            The domain in which the user has an account.

            auth1.close();
            auth2.close();
        }
    }

    /**
     * Test concurrent password comparisons to ensure thread safety and consistent timing.
     */
    @Test
    public void testConcurrentTimingConsistency() throws Exception {
        final char[] password = "concurrenttestpassword".toCharArray();
        final char[] wrongPassword = "concurrenttestpassworX".toCharArray(); // Different at end

     * @param password the password to authenticate with
     */
    public NtlmPasswordAuthentication(final CIFSContext tc, final String domain, final String username, final String password) {
        super(domain != null ? domain : tc.getConfig().getDefaultDomain(),
                username != null ? username : tc.getConfig().getDefaultUsername() != null ? tc.getConfig().getDefaultUsername() : "GUEST",