/** SMB2 create/open file command */
    protected static final short SMB2_CREATE = 0x0005;
    /** SMB2 close file command */
    protected static final short SMB2_CLOSE = 0x0006;
    /** SMB2 flush file command */
    protected static final short SMB2_FLUSH = 0x0007;
    /** SMB2 read file command */
    protected static final short SMB2_READ = 0x0008;
    /** SMB2 write file command */

     */
    public static final int CIPHER_AES_256_CCM = 0x0003;
    /**
     * AES-256-GCM cipher identifier for SMB3.1.1 encryption (future support)
     */
    public static final int CIPHER_AES_256_GCM = 0x0004;

    /**
     * Transform header flag indicating the message is encrypted
     */
    public static final int TRANSFORM_FLAG_ENCRYPTED = 0x0001;

    /**
     * Create encryption context
     *

    @DisplayName("Should support AES-256 cipher constants")
    void testAES256CipherConstants() {
        // Verify AES-256 constants are defined
        assertEquals(0x0003, Smb2EncryptionContext.CIPHER_AES_256_CCM, "AES-256-CCM constant should be defined");
        assertEquals(0x0004, Smb2EncryptionContext.CIPHER_AES_256_GCM, "AES-256-GCM constant should be defined");

        // Test creating context with AES-256 cipher IDs

        // Credit charge
        SMBUtil.writeInt2(1, buffer, headerStart + 6);
        // Status
        SMBUtil.writeInt4(0, buffer, headerStart + 8);
        // Command (READ = 0x0008)
        SMBUtil.writeInt2(0x0008, buffer, headerStart + 12);
        // Credit request/response
        SMBUtil.writeInt2(1, buffer, headerStart + 14);
        // Flags
        SMBUtil.writeInt4(0, buffer, headerStart + 16);