![Sammy K. Powers](https://daycamp4developers.com/wp-content/uploads/2017/04/sammy-powers.jpg)
Video download
June 2, 2017
Speaker: Sammy K Powers
Description
Sammy Powers, @SammyK
Randomness is really important in many cryptographic contexts. Unfortunately true randomness is a non-trivial achievement for computers. In fact, using weak sources of randomness can leave your application open to myriad vulnerabilities. Enter: a good cryptographically secure pseudorandom number generator (CSPRNG). We’ll discuss the importance of using good sources of randomness, the CSPRNG options we had in PHP 5.x, and how the new-hotness CSPRNG functions in PHP 7 work under the hood.