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Definitely not speaking for my employer, but here goes..

Definitely not speaking for my employer, but here goes..

Posted Jul 21, 2012 5:56 UTC (Sat) by dlang (subscriber, #313)
In reply to: Definitely not speaking for my employer, but here goes.. by DavidJohnston
Parent article: Random numbers for embedded devices

you don't have to 'wait' if you are willing to trust the /dev/urandom source, you only have to wait if you insist on getting a 'guarantee' that you are getting true randomness as opposed to just the best that the system can do.

The system will use the hardware RNG to modify the output of /dev/random and /dev/urandom, the only thing is that it doesn't increment the "guaranteed randomness available" counter.

realistically, I don't think it makes sense for anyone to depend on /dev/random and the 'available entropy' counter, the few cases that have super strict randomness guarantee requirements should just have a separate source of randomness

think of this as improving the quality of /dev/urandom rather than failing to get the full randomness of the hardware RNG


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