In Unix-like operating systems, /dev/random and /dev/urandom are special files that serve as cryptographically secure pseudorandom number generators (CSPRNGs).
Nov 18, 2016 · Use /dev/urandom for most practical purposes. The longer answer depends on the flavour of Unix that you're running.
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What is dev random used for?
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Sep 23, 2012 · Read that number of bytes from /dev/urandom. It is a "special file" that is made to be like a file to read random numbers from.
Feb 20, 2023 · Both /dev/random and /dev/urandom are used for generating random numbers in Linux. Learn more about them.
Jan 30, 2019 · This interface is described in the random(4) manpage as: “/dev/random is suitable for applications that need high-quality randomness, and can ...
Apr 25, 2016 · Only one thing needs to change: /dev/random should be non-blocking except during early boot before it's been properly seeded. Entropy estimation ...
Apr 12, 2011 · Strictly speaking, /dev/random is not really completely random. /dev/random feeds on hardware sources which are assumed to be unpredictible ...
When read, the /dev/urandom device returns random bytes using a pseudorandom number generator seeded from the entropy pool. Reads from this device do not block ...
Nov 17, 2016 · Using /dev/random on a system without enough entropy sources can cause luksFormat to block until the requested amount of random data is gathered ...
Oct 31, 2023 · I need to be able to use /dev/random to read directly from a HWRNG, and to block until it is able to obtain random bits. I do not know how to ...
