/dev/random
In Unix-like operating systems, /dev/random, /dev/urandom and /dev/arandom are special files that serve as pseudorandom number generators. They allow access to environmental noise collected from device drivers and other sources. /dev/random typically blocks if there is less entropy available than requested; /dev/urandom typically never blocks, even if the pseudorandom number generator seed was not fully initialized with entropy since boot. /dev/arandom blocks after boot until the seed has been securely initialized with enough entropy, and then never blocks again. Not all operating systems implement the same methods for /dev/random and /dev/urandom and only a few provide /dev/arandom.
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/dev/urandomBitstreamCryptGenRandomCryptographically-secure pseudorandom number generatorCypherpunkDd (Unix)Dev-randomDev/randomDevice fileEntropy-supplying system callsEntropy (computing)Fortuna (PRNG)Hardware random number generatorLibreSSLOne-time padOpen Sound SystemRDRANDRandom (disambiguation)Random number generationRandom password generatorSalsa20UrandomYarrow algorithm
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/dev/random
In Unix-like operating systems, /dev/random, /dev/urandom and /dev/arandom are special files that serve as pseudorandom number generators. They allow access to environmental noise collected from device drivers and other sources. /dev/random typically blocks if there is less entropy available than requested; /dev/urandom typically never blocks, even if the pseudorandom number generator seed was not fully initialized with entropy since boot. /dev/arandom blocks after boot until the seed has been securely initialized with enough entropy, and then never blocks again. Not all operating systems implement the same methods for /dev/random and /dev/urandom and only a few provide /dev/arandom.
has abstract
/dev/random je v informatice n ...... může být implementace odlišná.
@cs
/dev/random и /dev/urandom — с ...... ChaCha20 вместо SP800-90A DRBG
@ru
/dev/random та /dev/urandom — ...... д використовувати /dev/random.
@uk
/dev/random – wirtualne urządz ...... ących tzw. seed z /dev/random.
@pl
/dev/random はUnix系オペレーティングシステム ...... ような擬似デバイスを実装した最初のOSはLinuxであった。
@ja
/dev/random在类UNIX系统中是一个特殊的设备文件,可以用作随机数发生器或。
@zh
Dans les systèmes d'exploitati ...... ur le chiffrement asymétrique.
@fr
Em sistemas operacionais do ti ...... alguns fornecem /dev/arandom.
@pt
En sistemas operativos tipo Un ...... ma semántica para /dev/random.
@es
In Unix-like operating systems ...... ly a few provide /dev/arandom.
@en
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1,018,346,986
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December 2020
@en
reason
This isn't the reason that wri ...... hich doesn't make it harmless?
@en
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comment
/dev/random je v informatice n ...... může být implementace odlišná.
@cs
/dev/random и /dev/urandom — с ...... йную последовательность чисел.
@ru
/dev/random та /dev/urandom — ...... ормує з нього випадкові числа.
@uk
/dev/random – wirtualne urządz ...... graficznych. $ cat /dev/random
@pl
/dev/random はUnix系オペレーティングシステム ...... ような擬似デバイスを実装した最初のOSはLinuxであった。
@ja
/dev/random在类UNIX系统中是一个特殊的设备文件,可以用作随机数发生器或。
@zh
Dans les systèmes d'exploitati ...... t donc de moins bonne qualité.
@fr
Em sistemas operacionais do ti ...... ndom e /dev/urandom e apenas a
@pt
En sistemas operativos tipo Un ...... ma semántica para /dev/random.
@es
In Unix-like operating systems ...... ly a few provide /dev/arandom.
@en
label
/dev/random и /dev/urandom
@ru
/dev/random
@cs
/dev/random
@de
/dev/random
@en
/dev/random
@es
/dev/random
@fr
/dev/random
@it
/dev/random
@ja
/dev/random
@ko
/dev/random
@pl