* Handles both AES-CCM (SMB 3.0/3.0.2) and AES-GCM (SMB 3.1.1) cipher suites.
 *
 * @author mbechler
 */
public class Smb2EncryptionContext implements AutoCloseable {

    private static final Logger log = LoggerFactory.getLogger(Smb2EncryptionContext.class);

    private final int cipherId;
    private final DialectVersion dialect;
    private byte[] encryptionKey;
    private byte[] decryptionKey;

        Smb2EncryptionContext context256CCM =
                new Smb2EncryptionContext(Smb2EncryptionContext.CIPHER_AES_256_CCM, DialectVersion.SMB311, key256, key256);
        assertEquals(Smb2EncryptionContext.CIPHER_AES_256_CCM, context256CCM.getCipherId());

        Smb2EncryptionContext context256GCM =

import jcifs.internal.SmbNegotiationResponse;
import jcifs.internal.smb1.com.ServerData;
import jcifs.internal.smb1.com.SmbComNegotiateResponse;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.smb2.Smb2EncryptionContext;
import jcifs.internal.smb2.nego.EncryptionNegotiateContext;
import jcifs.internal.smb2.nego.Smb2NegotiateResponse;
import jcifs.util.transport.Request;

@ExtendWith(MockitoExtension.class)

        assertThrows(CIFSException.class, () -> session.decryptMessage(new byte[] { 1 }));

        // 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 });

import jcifs.internal.smb1.com.SmbComTreeConnectAndX;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Request;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.smb2.Smb2EncryptionContext;
import jcifs.internal.smb2.Smb2SigningDigest;
import jcifs.internal.smb2.lease.LeaseManager;
import jcifs.internal.smb2.multichannel.ChannelInfo;
import jcifs.internal.smb2.multichannel.ChannelManager;

import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Request;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.smb2.Smb2EncryptionContext;
import jcifs.internal.smb2.Smb3KeyDerivation;
import jcifs.internal.smb2.io.Smb2ReadResponse;
import jcifs.internal.smb2.ioctl.Smb2IoctlRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlResponse;