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| -rw-r--r-- | info/krandom.texinfo | 135 |
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@@ -1,18 +1,45 @@ -Keccak-based userspace pseudorandom number generator. +NAME + krandom - Keccak-based userspace pseudorandom number generator -With the default parameters, krandom is about twice -as fast as Linux's /dev/urandom. And it's tunable! +SYNOPSIS + krandom [-C capacity] [-N output-size] [-R rate] [-S state-size] [-W word-size] [-v] +DESCRIPTION + krandom create a Keccak sponge with a random state + and continually squeezes it to generate pseudorandom + binary data. -Can krandom be used as an entropy-generator? + Like yes(1), krandom will automatically pause soon + after the other end of the standard output pipe stops + reading and will terminate with no process reading + at the other end of the standard output pipe anymore. - Basically, no. The only less effective way - to generate entropy is to print /dev/urandom. - Good ways to generate entropy include: - Typing randomly in the terminal - Moving the rat pointer around erratically - Run ping - Listen to music - Watch videos - Run ponysay (surprisingly effective) + With the default parameters, krandom is about twice + as fast as Linux's /dev/urandom. And it's tunable! +OPTIONS + -C capacity + Select Keccak capacity. + + -R rate + Select Keccak rate. + + -N output-size + Select Keccak output size. This is the size + of a squeezed block, the total output is + unlimited. + + -S state-size + Select Keccak state size. + + -W state-size + Select Keccak word size. + + -v + Print extra informatio. + +NOTES + krandom is a terrible entropy-generator. Good ways + to generate entropy include: typing randomly in the + terminal, moving the rat pointer around erratically, + running ping, listening to music, and watching videos. diff --git a/info/fdl.texinfo b/info/fdl.texinfo deleted file mode 100644 index cb71f05..0000000 --- a/info/fdl.texinfo +++ /dev/null @@ -1,505 +0,0 @@ -@c The GNU Free Documentation License. -@center Version 1.3, 3 November 2008 - -@c This file is intended to be included within another document, -@c hence no sectioning command or @node. - -@display -Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. -@uref{http://fsf.org/} - -Everyone is permitted to copy and distribute verbatim copies -of this license document, but changing it is not allowed. -@end display - -@enumerate 0 -@item -PREAMBLE - -The purpose of this License is to make a manual, textbook, or other -functional and useful document @dfn{free} in the sense of freedom: to -assure everyone the effective freedom to copy and redistribute it, -with or without modifying it, either commercially or noncommercially. -Secondarily, this License preserves for the author and publisher a way -to get credit for their work, while not being considered responsible -for modifications made by others. - -This License is a kind of ``copyleft'', which means that derivative -works of the document must themselves be free in the same sense. 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Keccak-based userspace pseudorandom number generator -@end direntry - - -@copying -Copyright @copyright{} 2014 Mattias Andrée - -@quotation -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 or -any later version published by the Free Software Foundation; with no -Invariant Sections, with no Front-Cover Texts, and with no Back-Cover -Texts. A copy of the license is included in the section entitled -``GNU Free Documentation License''. -@end quotation -@end copying - -@ifnottex -@node Top -@top krandom -- Keccak-based userspace pseudorandom number generator -@insertcopying -@end ifnottex - -@titlepage -@title krandom -@subtitle Keccak-based userspace pseudorandom number generator -@author by Mattias Andrée (maandree) - -@page -@c @center `' -@vskip 0pt plus 1filll -@insertcopying -@end titlepage - -@contents - - - -@menu -* Overview:: Brief overview of @command{krandom}. -* Invoking:: Invocation of @command{krandom}. -* GNU Free Documentation License:: Copying and sharing this manual. -@end menu - - - -@node Overview -@chapter Overview - -@command{krandom} is a tunable userspace pseudorandom number generator -based on the Keccak hash-algorithm. - -With @command{krandom} default parameters it is about twice as fast -as Linux's @file{/dev/urandom}, but it's performance can be tuned -both up and down. - -@command{krandom} creates a Keccak sponge and initialises its state -@footnote{(25 @command{int_fast64_t}:s)} with random data from -@file{/dev/urandom}. This simulate it absorption phase of Keccak -from a random message. It then performance the squeezing phase -continuously until the standard output pipe breaks, that is, -when the program it pipes into exits or closes standard input. - -On a more technical level, @command{krandom} will pause automatically -if the other program does not read its input, and resume when it does. -This is because the pipe will become full and block writting for -@command{krandom}. - - - -@node Invoking -@chapter Invoking - -@command{krandom} recognises the following options: - -@table @option -@item -h -@itemx --help -Display a summary of options. - -@item -v -@itemx --verbose -Print extra information. - -@item -R -@itemx --bitrate -@itemx --rate RATE -Change the rate. - -@item -C -@itemx --capacity CAPACITY -Change the capacity. - -@item -N -@itemx -O -@itemx --output-size -@itemx --output SIZE -Change the output size. -This is the size of a squeezed block, -the total output is unlimited. - -@item -S -@itemx -B -@itemx --state-size -@itemx --state SIZE -Change the state size. - -@item -W -@itemx --word-size -@itemx --word SIZE -Change the word size. -@end table - - - -@node GNU Free Documentation License -@appendix GNU Free Documentation License -@include fdl.texinfo - -@bye - |