assertEquals(HASH_FN.newHasher().putUnencodedChars(s).hash(), HASH_FN.hashUnencodedChars(s));
    }
  }

  public void testUtf8() {
    char[] charsA = new char[128];
    char[] charsB = new char[128];

    for (int i = 0; i < charsA.length; i++) {
      if (i < 100) {
        charsA[i] = 'a';
        charsB[i] = 'a';
      } else {
        // Both two-byte characters, but must be different

func (tag Tag) IsEmpty() bool {
	return tag.Key == ""
}

// Validate checks this tag.
func (tag Tag) Validate() error {
	if len(tag.Key) == 0 || utf8.RuneCountInString(tag.Key) > 128 {
		return errInvalidTagKey
	}

	if utf8.RuneCountInString(tag.Value) > 256 {
		return errInvalidTagValue
	}

	return nil

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

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

    @Test
    @DisplayName("Should calculate MD5 hash correctly")
    void testMD5Hash() {
        // Given
        String input = "Hello World";
        byte[] data = input.getBytes();

      assertEquals(HASH_FN.newHasher().putUnencodedChars(s).hash(), HASH_FN.hashUnencodedChars(s));
    }
  }

  public void testUtf8() {
    char[] charsA = new char[128];
    char[] charsB = new char[128];

    for (int i = 0; i < charsA.length; i++) {
      if (i < 100) {
        charsA[i] = 'a';
        charsB[i] = 'a';
      } else {
        // Both two-byte characters, but must be different

                    len += 2;
                    if (len > maxLen) {
                        if (LogStream.level > 0) {
                            Hexdump.hexdump(System.err, src, srcIndex, maxLen < 128 ? maxLen + 8 : 128);
                        }
                        throw new RuntimeException("zero termination not found");
                    }
                }

        SMBUtil.writeInt4(0, buffer, bufferIndex + 19);

        // dataCount (4 bytes)
        SMBUtil.writeInt4(200, buffer, bufferIndex + 23);

        // dataOffset (4 bytes)
        SMBUtil.writeInt4(128, buffer, bufferIndex + 27);

        // dataDisplacement (4 bytes)
        SMBUtil.writeInt4(0, buffer, bufferIndex + 31);

        // setupCount (1 byte) + 1 reserved byte

          + "\u2006\u2007\u2008\u2009\u200a";
  private static final String ASCII_CHARACTERS;

  static {
    int spaceInAscii = 32;
    int sevenBitAsciiMax = 128;
    StringBuilder sb = new StringBuilder(sevenBitAsciiMax - spaceInAscii);
    for (int ch = spaceInAscii; ch < sevenBitAsciiMax; ch++) {
      sb.append((char) ch);
    }
    ASCII_CHARACTERS = sb.toString();
  }

          + "\u2006\u2007\u2008\u2009\u200a";
  private static final String ASCII_CHARACTERS;

  static {
    int spaceInAscii = 32;
    int sevenBitAsciiMax = 128;
    StringBuilder sb = new StringBuilder(sevenBitAsciiMax - spaceInAscii);
    for (int ch = spaceInAscii; ch < sevenBitAsciiMax; ch++) {
      sb.append((char) ch);
    }
    ASCII_CHARACTERS = sb.toString();
  }

        // Set excessive negotiate context count (should be limited to 100)
        SMBUtil.writeInt2(1000, buffer, 6);
        // Set negotiate context offset to valid value
        SMBUtil.writeInt4(128, buffer, 60);

        SMBProtocolDecodingException exception = assertThrows(SMBProtocolDecodingException.class, () -> {
            response.readBytesWireFormat(buffer, 0);
        });

        }

        @Test
        @DisplayName("Should allow size override")
        void testSizeOverride() {
            testRequest.setEncodedSize(128);
            assertEquals(128, testRequest.size());
        }

        @Test
        @DisplayName("Should throw exception on null buffer")
        void testEncodeWithNullBuffer() {