/**
   * The largest value that fits into an unsigned byte.
   *
   * @since 13.0
   */
  public static final byte MAX_VALUE = (byte) 0xFF;

  private static final int UNSIGNED_MASK = 0xFF;

  /**
   * Returns the value of the given byte as an integer, when treated as unsigned. That is, returns
   * {@code value + 256} if {@code value} is negative; {@code value} itself otherwise.

        StringBuilder sb = new StringBuilder("WITNESS-");
        for (int i = 0; i < Math.min(contextHandle.length, 8); i++) {
            sb.append(String.format("%02X", contextHandle[i] & 0xFF));
        }
        sb.append("-").append(shareName.hashCode());

        return sb.toString();
    }

    /**
     * Checks if the client is connected to the witness service.
     *

     */
    private int countUniqueBytes(byte[] data) {
        boolean[] seen = new boolean[256];
        int count = 0;

        for (byte b : data) {
            int index = b & 0xFF;
            if (!seen[index]) {
                seen[index] = true;
                count++;
            }
        }

        return count;
    }

		extra   []byte
		wanterr error
	}{
		{
			name:    strings.Repeat("x", 1<<16),
			extra:   []byte{},
			wanterr: errLongName,
		},
		{
			name:    "long_extra",
			extra:   bytes.Repeat([]byte{0xff}, 1<<16),
			wanterr: errLongExtra,
		},
	}

	// write a zip file
	buf := new(bytes.Buffer)
	w := NewWriter(buf)

	for _, test := range headerTests {
		h := &FileHeader{
			Name:  test.name,

        byte[] buffer = new byte[256];
        // Fill with non-zero values first
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = (byte) 0xFF;
        }

        // When
        request.writeBytesWireFormat(buffer, 10);

        // Then - verify reserved field is zero
        assertEquals(0, SMBUtil.readInt2(buffer, 12));
    }

        char[] plaintext = "SecureData".toCharArray();
        byte[] encrypted = storage.encryptCredentials(plaintext);

        // Tamper with the encrypted data
        encrypted[encrypted.length - 1] ^= 0xFF;

        // Should throw exception due to authentication tag failure
        assertThrows(GeneralSecurityException.class, () -> {
            storage.decryptCredentials(encrypted);

        }

        @Test
        @DisplayName("Should not modify buffer beyond encoded area")
        void testEncodeDoesNotModifyBeyondArea() {
            // Given
            byte testByte = (byte) 0xFF;
            java.util.Arrays.fill(buffer, testByte);
            SrvCopychunk chunk = new SrvCopychunk(1024, 2048, 4096);

            // When
            chunk.encode(buffer, startIndex);

            // Then

    void testSpecialFileIdPatterns() {
        // Test various special patterns
        byte[] allZeros = new byte[16];
        byte[] allOnes = new byte[16];
        Arrays.fill(allOnes, (byte) 0xFF);
        byte[] alternating = new byte[16];
        for (int i = 0; i < alternating.length; i++) {
            alternating[i] = (byte) (i % 2 == 0 ? 0xAA : 0x55);
        }

        // Given
        byte[] buffer = new byte[256];
        // Fill buffer with test pattern
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = (byte) (i & 0xFF);
        }
        byte[] originalBuffer = buffer.clone();

        // When
        int bytesWritten = response.writeBytesWireFormat(buffer, 10);

        // Then
        assertEquals(0, bytesWritten);

     */
    public SID getSID() {
        return sid;
    }

    int decode(final byte[] buf, int bi) {
        allow = buf[bi] == (byte) 0x00;
        bi++;
        flags = buf[bi++] & 0xFF;
        final int size = ServerMessageBlock.readInt2(buf, bi);
        bi += 2;
        access = ServerMessageBlock.readInt4(buf, bi);
        bi += 4;
        sid = new SID(buf, bi);
        return size;
    }