Show HN: A Pseudo-Random Number Generator Predictor in Java

[ponsuke]

https://github.com/yutarochan/PRNGPredict

[lun4r]

So from the first two 'randomly' generated integers it is possible to derive a value that can be used to as a seed value to 'sync' two PRNGs? that can't be good. :S

[seandougall → lun4r]

The docs do say:

> Instances of java.util.Random are not cryptographically secure. Consider instead using SecureRandom to get a cryptographically secure pseudo-random number generator for use by security-sensitive applications.

So hopefully this isn't too much of a surprise to anyone writing crypto code in Java.

[pmoriarty]

Dilbert's take on this:

http://i.imgur.com/lr5ko7L.gif