* @param length
     * @param extraPad
     *            extra padding to include in signature
     * @param msg
     *            The message to verify
     * @return whether verification was unsuccessful
     */
    boolean verify ( byte[] data, int offset, int length, int extraPad, CommonServerMessageBlock msg );

            }
        }
    }


    /**
     * 
     * {@inheritDoc}
     *
     * @see jcifs.internal.SMBSigningDigest#verify(byte[], int, int, int, jcifs.internal.CommonServerMessageBlock)
     */
    @Override
    public boolean verify ( byte[] data, int offset, int l, int extraPad, CommonServerMessageBlock m ) {

        ServerMessageBlock msg = (ServerMessageBlock) m;

            }
            this.mechContext.verifyMIC(ml, mechanismListMIC);
        }
        catch ( CIFSException e ) {
            throw new CIFSException("Failed to verify mechanismListMIC", e);
        }
    }


    /**
     * @param mechs
     * @return
     * @throws CIFSException
     */

            // TODO: SMB2 - do we need to check the MIDs?
            // We only read what we were waiting for, so first guess would be no.
            boolean verify = dgst.verify(buffer, i, size, 0, this);
            this.verifyFailed = verify;
            return !verify;
        }
        return true;
    }

            throw new CIFSException(String.format("Invalid MIC sequence, expect %d have %d", expectSeq, seq));
        }

        byte[] verify = new byte[8];
        System.arraycopy(mic, 4, verify, 0, 8);
        if ( !MessageDigest.isEqual(trunc, verify) ) {
            if ( log.isDebugEnabled() ) {
                log.debug(String.format("Seq = %d ver = %d encrypted = %s", seq, ver, encrypted));

     *
     * @param data The data.
     * @param offset The starting offset at which the SMB header begins.
     * @param length The length of the SMB data starting at offset. 
     */
    boolean verify(byte[] data, int offset, ServerMessageBlock response) {
        update(macSigningKey, 0, macSigningKey.length);
        int index = offset;
        update(data, index, ServerMessageBlock.SIGNATURE_OFFSET); 

    }


    /**
     * 
     * {@inheritDoc}
     *
     * @see jcifs.internal.SMBSigningDigest#verify(byte[], int, int, int, jcifs.internal.CommonServerMessageBlock)
     */
    @Override
    public synchronized boolean verify ( byte[] data, int offset, int length, int extraPad, CommonServerMessageBlock msg ) {
        this.digest.reset();

         * the 'received' member of the response object will not
         * be set to true indicating the send and sendTransaction
         * methods that the next part should be sent. This is a
         * very indirect and simple batching control mechanism.
         */

        if ( this.andx == null || !getConfig().isUseBatching() || this.batchLevel >= getBatchLimit(getConfig(), (byte) this.andx.getCommand()) ) {

    static final int FLAGS_TARGET_MUST_BE_DIRECTORY    = 0x0002; 
    static final int FLAGS_COPY_TARGET_MODE_ASCII      = 0x0004; 
    static final int FLAGS_COPY_SOURCE_MODE_ASCII      = 0x0008;
    static final int FLAGS_VERIFY_ALL_WRITES           = 0x0010; 
    static final int FLAGS_TREE_COPY                   = 0x0020; 

    // open function
    static final int OPEN_FUNCTION_FAIL_IF_EXISTS      = 0x0000;

        try {
            this.gssContext.verifyMIC(mic, 0, mic.length, data, 0, data.length, new MessageProp(false));
        }
        catch ( GSSException e ) {
            throw new CIFSException("Failed to verify MIC", e);
        }
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#isMICAvailable()
     */
    @Override
    public boolean isMICAvailable () {