What entropy sources are available on heroku?

2018-06-03 01:08:35

I would like to deploy an application to heroku which needs to be able to generate cryptographically secure random numbers. What entropy sources can I use?

Your Heroku dyno is basically an Ubuntu Server VM, so you should have access to /dev/random and /dev/urandom like you would on any other Linux-based OS.

If you're using Ruby/Rails, you should probably be using SecureRandom (or ActiveSupport::SecureRandom for older versions of Ruby and Rails) for this.

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