throw new CIFSException("Failed to encrypt MIC", e);
            }
        }

        byte[] sig = new byte[16];
        SMBUtil.writeInt4(1, sig, 0); // version
        System.arraycopy(trunc, 0, sig, 4, 8); // checksum
        SMBUtil.writeInt4(seqNum, sig, 12); // seqNum

        return sig;
    }


    @Override
    public void verifyMIC ( byte[] data, byte[] mic ) throws CIFSException {