Editing /dev/random (section)

==Other operating systems==
{{nowrap|{{mono|/dev/random}}}} and {{nowrap|{{mono|/dev/urandom}}}} are also available on Solaris,<ref>{{cite web
| url=https://blogs.oracle.com/solaris/post/solaris-random-number-generation
| title=Solaris Random Number Generation
| first=Darren
| last=Moffat
| work=Oracle Solaris Blog
| date=2013-09-12
| access-date=2022-04-30
}}</ref>
NetBSD,<ref>{{man|4|rnd|NetBSD}}</ref>
Tru64 UNIX 5.1B,<ref>{{cite web
| url=http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/MAN/MAN4/0199____.HTM
| title=random(4)
| date=1999-09-19
| access-date=2013-07-03}}</ref> AIX 5.2<ref>{{cite web
 |url         = http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.files/doc/aixfiles/random.htm
 |title       = random and urandom Devices
 |work        = pSeries and AIX Information Center
 |date        = 2010-03-15
 |access-date  = 2013-07-03
 |archive-url  = https://web.archive.org/web/20210303075907/http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=%2Fcom.ibm.aix.files%2Fdoc%2Faixfiles%2Frandom.htm
 |archive-date = 2021-03-03
 |url-status  = dead
}}</ref> and HP-UX 11i v2.<ref>{{cite web
| url=http://software.hp.com/portal/swdepot/displayProductInfo.do?productNumber=KRNG11I
| title=HP-UX Strong Random Number Generator
| date=2004-07-23
| access-date=2013-07-03}}</ref> As with FreeBSD, AIX implements its own Yarrow-based design, however AIX uses considerably fewer entropy sources than the standard {{nowrap|{{mono|/dev/random}}}} implementation and stops refilling the pool when it thinks it contains enough entropy.<ref>{{cite web
| url=http://lists.gnupg.org/pipermail/gnupg-devel/2003-April/019954.html
| title=AIX 5.2 /dev/random and /dev/urandom devices
| first=Iain | last=Roberts
| date=2003-04-25
| publisher=Lists.gnupg.org
| access-date=2013-07-03
| archive-url=https://web.archive.org/web/20120222144110/http://lists.gnupg.org/pipermail/gnupg-devel/2003-April/019954.html
| archive-date=2012-02-22
| url-status=live}}</ref>

In [[Windows NT]], similar functionality is delivered by {{nowrap|{{mono|ksecdd.sys}}}}, but reading the special file {{nowrap|{{mono|\Device\KsecDD}}}} does not work as in UNIX. The documented methods to generate cryptographically random bytes are [[CryptGenRandom]] and [[RtlGenRandom]]. Windows [[PowerShell]] provides access to a cryptographically secure pseudorandom number generator via the {{mono|Get-SecureRandom}} cmdlet.<ref>{{Cite web |last= |title=Get-SecureRandom (Microsoft.PowerShell.Utility) - PowerShell |url=https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/get-securerandom?view=powershell-7.4 |access-date=2024-06-16 |website=learn.microsoft.com |language=en-us}}</ref>

[[Cygwin]] on Windows provides implementations of both {{nowrap|{{mono|/dev/random}}}} and {{nowrap|{{mono|/dev/urandom}}}}, which can be used in scripts and programs.<ref>{{Cite web|url=https://www.linuxquestions.org/questions/general-10/how-does-cygwin's-dev-random-and-urandom-work-903054/#post4493834|title=How does Cygwin's /dev/random and urandom work?|website=www.linuxquestions.org|language=en|access-date=2018-03-09}}</ref>