Pseudo Random Number Generator

We have brought the Data Encryption Standard (DES) block cipher out of retirement for a second career as a Pseudo Random Number Generator (PRNG). DES PRNG is intended for simulations that benefit from PRN generation at the granularity of lightweight (GPU) threads. An example of this type of simulation is Particle-in-Cell (PIC) with Monte-Carlo Collisions (MCC). In PIC-MCC a large set of charged particles are time evolved in self-consistent electromagnetic fields, with particle collisions against background neutral species modelled as probabilistic events.