How to deal with a slow SecureRandom generator?

Question

If you want a cryptographically strong random numbers in Java, you use SecureRandom. Unfortunately, SecureRandom can be very slow. If it uses

Answer 1

There is a tool (on Ubuntu at least) that will feed artificial randomness into your system. The command is simply:

rngd -r /dev/urandom

and you may need a sudo at the front. If you don't have rng-tools package, you will need to install it. I tried this, and it definitely helped me!

Source: matt vs world