// Given
        int originalCipherId = encryptionContext.getCipherId();
        DialectVersion originalDialect = encryptionContext.getDialect();

        // When - Modify the original key array
        testEncryptionKey[0] = (byte) ~testEncryptionKey[0];

        // Then - Context should not be affected by external modifications
        assertEquals(originalCipherId, encryptionContext.getCipherId(), "Cipher ID should remain unchanged");

                    this.preauthIntegrityHash = null;
                }

                // Clear encryption context
                if (this.encryptionContext != null) {
                    try {
                        this.encryptionContext = null;
                    } catch (Exception e) {
                        log.debug("Error clearing encryption context during emergency cleanup", e);
                    }

        // Set encryption context and verify delegation
        Smb2EncryptionContext enc = mock(Smb2EncryptionContext.class);
        setField(session, "encryptionContext", enc);
        setField(session, "sessionId", 99L);

        when(enc.encryptMessage(any(byte[].class), eq(99L))).thenReturn(new byte[] { 9, 9 });