Hi Ehab,
Most of our components are actually pulse code modulators. For example our NRZ pulse generator works by sampling an input binary sequence to create a digitized analog representation of the rectangular waveform. We also have a measured pulse sequence generator where you can define the output signal based on a defined input amplitude-time waveform. For encryption however you may need to use our MATLAB component to process (encrypt) the sampled (digitized) signals at the transmitter and receiver. I hope this helps. Cheers.