Random Number Generators: what do you need one for?

Flavio Villanustre writes “Random Number Generators are a vital part of all modern operating systems. Being computers a deterministic system, random numbers are used where a non-deterministic input is required. An obvious use is virtual dice rolling for gambling systems, but if you don’t plan on running an online casino, what do you need one for?

Random numbers are utilized in many different areas, ranging from cryptography (in general) to source port and process ID randomization in some operating systems. So what is exactly a Random Number Generator?

Random number generators are just a source for random numbers. In their most basic form, they are functions that return a random number within a range.”