// Verify hash is not null
        byte[] hash = transport.getPreauthIntegrityHash();
        assertNotNull(hash);

        // Verify hash is a copy, not the original
        byte[] hash2 = transport.getPreauthIntegrityHash();
        assertNotSame(hash, hash2);
        assertArrayEquals(hash, hash2);
    }

    /**
     * Test that pre-auth hash is reset on error
     */
    @Test

        int key2 = key1 ^ (1 << i);
        // get hashes
        int hash1 = function.hashInt(key1).asInt();
        int hash2 = function.hashInt(key2).asInt();
        // test whether the hash values have same output bits
        same |= ~(hash1 ^ hash2);
        // test whether the hash values have different output bits
        diff |= hash1 ^ hash2;

        count++;

    @DisplayName("Should calculate MD4 hash correctly")
    void testMD4Hash() {
        // Given
        String input = "Hello World";
        byte[] data = input.getBytes();

        // When
        MessageDigest md4 = Crypto.getMD4();
        byte[] hash = md4.digest(data);

        // Then
        assertNotNull(hash);
        assertEquals(16, hash.length); // MD4 produces 128-bit hash
    }

    @Test

        // Act
        byte[] hash1 = NtlmUtil.getNTHash(password1);
        byte[] hash2 = NtlmUtil.getNTHash(password2);

        // Assert
        assertFalse(Arrays.equals(hash1, hash2), "Different passwords should produce different hashes");
        assertEquals(16, hash1.length, "NT hash should be 16 bytes");
        assertEquals(16, hash2.length, "NT hash should be 16 bytes");
    }

    @Test

            byte[] hash1 = transport.calculatePreauthHash(input, 0, input.length, null);
            assertNotNull(hash1);
            assertEquals(64, hash1.length, "SHA-512 size");

            byte[] hash2 = transport.calculatePreauthHash(new byte[] { 50 }, 0, 1, hash1);
            assertNotNull(hash2);
            assertEquals(64, hash2.length);

    }

    @Test
    void hashCode_shouldBeConsistent() {
        Name name = new Name(mockConfig, "TEST", 0x20, "scope");
        int hash1 = name.hashCode();
        int hash2 = name.hashCode();

        assertEquals(hash1, hash2);
    }

    @Test
    void hashCode_withSameValues_shouldBeEqual() {
        Name name1 = new Name(mockConfig, "TEST", 0x20, "scope");

        assertArrayEquals(testHash, avChannelBindings.getRaw(), "Value should match the provided hash");
    }

    /**
     * Test that the constructor handles a null channel binding hash.
     */
    @Test
    void testConstructorWithNullHash() {
        AvChannelBindings avChannelBindings = new AvChannelBindings(null);

        buffer = new byte[BUFFER_SIZE];
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create instance with Configuration, hash algorithms and salt")
        void testConstructorWithConfigHashAlgosAndSalt() {
            int[] hashAlgos = { PreauthIntegrityNegotiateContext.HASH_ALGO_SHA512 };
            byte[] salt = { 0x01, 0x02, 0x03, 0x04 };

package jcifs.smb;

import org.bouncycastle.util.encoders.Hex;

/**
 * Authenticator directly specifing the user's NT hash
 *
 * @author mbechler
 *
 */
public class NtlmNtHashAuthenticator extends NtlmPasswordAuthenticator {

    private static final long serialVersionUID = 4328214169536360351L;
    /** The NT hash for authentication */
    private final byte[] ntHash;

    /**

    return (bits + 31) & ~31;
  }

  /**
   * Returns a hash function which computes its hash code by concatenating the hash codes of the
   * underlying hash functions together. This can be useful if you need to generate hash codes of a
   * specific length.
   *
   * <p>For example, if you need 1024-bit hash codes, you could join two {@link Hashing#sha512} hash