@Juro:
Nein, GNU/Linux implementiert die Devices /dev/random und /dev/urandom nicht zum Spaß:
http://linux.about.com/library/cmd/blcmdl4_random.htm
Anwendungsbeispiel:
https://www.wireless.org.au/~jhecker/wepgen/index.php
OpenSSH und OpenSSL verwenden es auch, hier ein Auszug aus dem OpenSSH Guide von O'Reily:
Zitat:
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Since various programs require random bits, some operating systems have built-in facilities for providing them. Some Unix variants (including Linux and OpenBSD) have a device driver, accessed through /dev/random and /dev/urandom, that provides random bits when opened and read as a file. These bits are derived by all sorts of methods, some quite clever. Correctly filtered timing measurements of disk accesses, for example, can represent the fluctuations due to air turbulence around the drive heads.
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http://secu.zzu.edu.cn/book/NetWork/...sh/ch03_07.htm
etc.