It helps nobody to propagate misinformation! Find me on Twitter : Changes to Random Number Generation in. As always, if you’re reading something here that you know is glaringly wrong, drop me a line and I’ll correct it. I want to be clear that I am not an authoritative expert, so I’ve tried hard to validate everything stated here with links and references. Note: There has been a great deal of information covered in this article. This one is meant to be a complete geek-out. This blog is intended for a different audience - those who are interested in how stuff works under the hood. Part of the revision includes a change to the underlying default PRNG algorithm that is now used in the Random class, along with changes to the cryptographically strong RNG libraries.įor a vast majority of developers, it’s entirely fair and reasonable to dismiss these revisions to the BCL - along with entire sections of this very article - as being “just about implementation details that we don’t need to know about”.

NET 6 (still in preview at the time of writing), the implementation of the Random class has been further revised. From a usage perspective, things remained virtually unchanged - but there are some minor nuances that may help to be aware of. NET Core 2.0, the internal implementation of the System.Random class was revised slightly compared to the legacy. This article will not be exploring that class beyond basic usage and implementation. There are very minor nuances to be mindful of, but working with this class is mostly straightforward.įor those development scenarios that are specifically related to cryptography and security, one should use the class to generate random values.

NET System.Random class is, for a majority of usage scenarios, the appropriate “go-to” choice that developers should use. We’ll also look at the background behind some of the popular PRNG algorithms. In this article we’ll explore thoroughly how pseudo-random number generators (PRNG) work, both in general and in the specific context to the various implementations found in the.

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