throw new SmbException("Path contains control characters");
        }

        // Check for traversal sequences
        if (containsTraversal(path)) {
            log.warn("Path contains directory traversal: {}", sanitizeForLog(path));
            throw new SmbException("Path contains directory traversal sequences");
        }

        // Normalize the path
        String normalized = normalizePath(path);

        }
        if (PATH_TRAVERSAL.matcher(path).find()) {
            throw new IllegalArgumentException("Path contains directory traversal sequences: " + path);
        }
        if (INVALID_PATH_CHARS.matcher(path).find()) {
            throw new IllegalArgumentException("Path contains invalid characters: " + path);
        }
    }

    /**

        // Check for directory traversal
        if (path.contains("..") || path.contains("./") || path.contains(".\\")) {
            failedValidations.incrementAndGet();
            log.warn("Path contains traversal sequences: {}", sanitizeForLog(path));
            throw new SmbException("Path contains directory traversal");
        }

        // Check individual components
        String[] components = path.split("[/\\\\]");

            }
            ASN1Sequence sequence = ASN1Sequence.getInstance(tagged, true);
            final Enumeration<ASN1Object> fields = sequence.getObjects();
            while (fields.hasMoreElements()) {
                tagged = (ASN1TaggedObject) fields.nextElement();
                switch (tagged.getTagNo()) {
                case 0:
                    sequence = ASN1Sequence.getInstance(tagged, true);

    }

    @Test
    @DisplayName("byte[] ctor: top-level non-SEQUENCE triggers PACDecodingException (type mismatch)")
    void byteArrayConstructor_topLevelNotSequence_throws() throws Exception {
        // Arrange: Encoded INTEGER instead of SEQUENCE
        byte[] notASequence = new ASN1Integer(42).getEncoded();

        // Act + Assert

Set<String> caseInsensitiveSet = new CaseInsensitiveSet<>();

// Java 21 Sequenced Collections support
SequencedCollection<String> sequenced = CollectionsUtil.newLinkedHashSet();
String first = CollectionsUtil.getFirst(sequenced);
String last = CollectionsUtil.getLast(sequenced);
SequencedCollection<String> reversed = CollectionsUtil.reversed(sequenced);

// Specialized collections

        int index = offset;
        update(data, index, SmbConstants.SIGNATURE_OFFSET);
        index += SmbConstants.SIGNATURE_OFFSET;
        final byte[] sequence = new byte[8];
        SMBUtil.writeInt4(msg.getSignSeq(), sequence, 0);
        update(sequence, 0, sequence.length);
        index += 8;
        if (msg.getCommand() == ServerMessageBlock.SMB_COM_READ_ANDX) {
            /*

            when(mockNdrBuffer.derive(anyInt())).thenReturn(mockNdrBuffer);

            // When: Encoding the UUID
            uuid.encode(mockNdrBuffer);

            // Then: Verify the encoding sequence
            verify(mockNdrBuffer).align(4);
            verify(mockNdrBuffer).enc_ndr_long(0x12345678);
            verify(mockNdrBuffer).enc_ndr_short((short) 0x9ABC);

        assertNotNull(digest);
        assertTrue(digest.toString().contains("MacSigningKey="));
    }

    @Test
    @DisplayName("Test constructor with MAC signing key, bypass flag and initial sequence")
    void testConstructorWithBypassAndInitialSequence() {
        int initialSequence = 100;
        SMB1SigningDigest digest = new SMB1SigningDigest(testMacSigningKey, true, initialSequence);
        assertNotNull(digest);

        final byte[] seqBytes = new byte[4];
        SMBUtil.writeInt4(seqNum, seqBytes, 0);

        final MessageDigest mac = Crypto.getHMACT64(sk);
        mac.update(seqBytes); // sequence
        mac.update(data); // data
        final byte[] dgst = mac.digest();
        byte[] trunc = new byte[8];
        System.arraycopy(dgst, 0, trunc, 0, 8);

        if (log.isDebugEnabled()) {