  Differential Privacy (DP) relies on random numbers to preserve privacy,
typically utilising Pseudorandom Number Generators (PRNGs) as a source of
randomness. In order to allow for consistent reproducibility, testing and
bug-fixing in DP algorithms and results, it is important to allow for the
seeding of the PRNGs used therein. In this work, we examine the landscape of
Random Number Generators (RNGs), and the considerations software engineers
should make when choosing and seeding a PRNG for DP. We hope it serves as a
suitable guide for DP practitioners, and includes many lessons learned when
implementing seeding for diffprivlib.
