Pseudorandomness

A pseudorandom sequence of numbers is one that appears to be statistically random, despite having been produced by a completely deterministic and repeatable process. Pseudorandom number generators are often used in computer programming, as traditional sources of randomness available to humans (such as rolling dice) rely on physical processes not readily available to computer programs, although developments in hardware random number generator technology have challenged this.

seemingly random, difficult to predict bit stream created by a deterministic algorithm

pseudo-random signal with characteristics similar to noise

type of pseudorandom binary sequence

collection of efficiently-computable functions which emulate a random oracle

concept in cryptography