import java.util.Collections.singletonMap
import java.util.Locale.US
import kotlin.text.Charsets.ISO_8859_1
import okhttp3.internal.unmodifiable

/**
 * An [RFC 7235][rfc_7235] challenge.
 *
 * [rfc_7235]: https://tools.ietf.org/html/rfc7235
 */
class Challenge(
  /** Returns the authentication scheme, like `Basic`. */
  @get:JvmName("scheme") val scheme: String,
  authParams: Map<String?, String>,
) {
  /**

/**
 * Represents an NTLM authentication challenge in SMB1 protocol.
 */
public final class NtlmChallenge implements Serializable {

    /**
     * The NTLM challenge bytes received from the server.
     */
    public byte[] challenge;
    /**
     * The domain controller address that issued the challenge.
     */
    public UniAddress dc;

    NtlmChallenge(final byte[] challenge, final UniAddress dc) {

        parse(material);
    }

    /**
     * Returns the challenge for this message.
     *
     * @return A <code>byte[]</code> containing the challenge.
     */
    public byte[] getChallenge() {
        return challenge;
    }

    /**
     * Sets the challenge for this message.
     *
     * @param challenge The challenge from the domain controller/server.
     */

    /**
     * Challenge
     */
    public byte[] challenge;

    /**
     * Server address
     */
    public UniAddress dc;

    /**
     * Creates a new NTLM challenge with the specified parameters.
     * @param challenge the NTLM challenge bytes
     * @param dc the domain controller address
     */
    public NtlmChallenge(final byte[] challenge, final UniAddress dc) {

    }

    /**
     * Returns the challenge for this message.
     *
     * @return A <code>byte[]</code> containing the challenge.
     */
    public byte[] getChallenge() {
        return this.challenge;
    }

    /**
     * Sets the challenge for this message.
     *
     * @param challenge
     *            The challenge from the domain controller/server.
     */

            return getPreNTLMResponse(password, challenge);
        }
    }

    /**
     * Computes the 24 byte Unicode password hash given the 8 byte server challenge.
     *
     * @param challenge the server challenge bytes
     * @return the Unicode password hash
     */
    public byte[] getUnicodeHash(final byte[] challenge) {
        if (hashesExternal) {
            return unicodeHash;
        }

        // Arrange
        String password = "password";
        byte[] challenge = hex("1122334455667788");

        // Act
        byte[] r1 = NtlmUtil.getNTLMResponse(password, challenge);
        byte[] r2 = NtlmUtil.getNTLMResponse(NtlmUtil.getNTHash(password), challenge);

        // Assert
        assertArrayEquals(r2, r1);
        assertEquals(24, r1.length);
    }

     * @param password the password to hash
     * @param challenge the server challenge bytes
     * @return the calculated response
     * @throws GeneralSecurityException if a cryptographic error occurs
     */
    public static byte[] getNTLMResponse(final String password, final byte[] challenge) throws GeneralSecurityException {
        return getNTLMResponse(getNTHash(password), challenge);
    }

    /**

 */
fun Headers.parseChallenges(headerName: String): List<Challenge> {
  val result = mutableListOf<Challenge>()
  for (h in 0 until size) {
    if (headerName.equals(name(h), ignoreCase = true)) {
      val header = Buffer().writeUtf8(value(h))
      try {
        header.readChallengeHeader(result)
      } catch (e: EOFException) {
        Platform.get().log("Unable to parse challenge", Platform.WARN, e)
      }
    }
  }

    void testGetPreNTLMResponse() {
        byte[] challenge = { 1, 2, 3, 4, 5, 6, 7, 8 };
        byte[] response = NtlmPasswordAuthentication.getPreNTLMResponse("password", challenge);
        assertNotNull(response);
        assertEquals(24, response.length);
    }

    // Test getNTLMResponse
    @Test
    void testGetNTLMResponse() {
        byte[] challenge = { 1, 2, 3, 4, 5, 6, 7, 8 };