118 lines
3.4 KiB
HTML
118 lines
3.4 KiB
HTML
<?xml version="1.0" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>rand</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<link rev="made" href="mailto:root@localhost" />
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</head>
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<body style="background-color: white">
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<!-- INDEX BEGIN -->
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<div name="index">
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<p><a name="__index__"></a></p>
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<ul>
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<li><a href="#name">NAME</a></li>
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<li><a href="#synopsis">SYNOPSIS</a></li>
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<li><a href="#description">DESCRIPTION</a></li>
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<li><a href="#options">OPTIONS</a></li>
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<li><a href="#see_also">SEE ALSO</a></li>
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<li><a href="#copyright">COPYRIGHT</a></li>
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</ul>
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<hr name="index" />
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</div>
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<!-- INDEX END -->
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<p>
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</p>
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<hr />
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<h1><a name="name">NAME</a></h1>
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<p>openssl-rand,
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rand - generate pseudo-random bytes</p>
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<p>
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</p>
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<hr />
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<h1><a name="synopsis">SYNOPSIS</a></h1>
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<p><strong>openssl rand</strong>
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[<strong>-help</strong>]
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[<strong>-out</strong> <em>file</em>]
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[<strong>-rand file...</strong>]
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[<strong>-writerand file</strong>]
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[<strong>-base64</strong>]
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[<strong>-hex</strong>]
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<em>num</em></p>
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<p>
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</p>
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<hr />
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<h1><a name="description">DESCRIPTION</a></h1>
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<p>The <strong>rand</strong> command outputs <em>num</em> pseudo-random bytes after seeding
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the random number generator once. As in other <strong>openssl</strong> command
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line tools, PRNG seeding uses the file <em>$HOME/</em><strong>.rnd</strong> or <strong>.rnd</strong>
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in addition to the files given in the <strong>-rand</strong> option. A new
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<em>$HOME</em>/<strong>.rnd</strong> or <strong>.rnd</strong> file will be written back if enough
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seeding was obtained from these sources.</p>
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<p>
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</p>
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<hr />
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<h1><a name="options">OPTIONS</a></h1>
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<dl>
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<dt><strong><a name="help" class="item"><strong>-help</strong></a></strong></dt>
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<dd>
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<p>Print out a usage message.</p>
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</dd>
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<dt><strong><a name="out_file" class="item"><strong>-out file</strong></a></strong></dt>
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<dd>
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<p>Write to <em>file</em> instead of standard output.</p>
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</dd>
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<dt><strong><a name="rand_file" class="item"><strong>-rand file...</strong></a></strong></dt>
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<dd>
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<p>A file or files containing random data used to seed the random number
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generator.
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Multiple files can be specified separated by an OS-dependent character.
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The separator is <strong>;</strong> for MS-Windows, <strong>,</strong> for OpenVMS, and <strong>:</strong> for
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all others.</p>
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</dd>
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<dt><strong><a name="writerand_file" class="item">[<strong>-writerand file</strong>]</a></strong></dt>
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<dd>
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<p>Writes random data to the specified <em>file</em> upon exit.
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This can be used with a subsequent <strong>-rand</strong> flag.</p>
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</dd>
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<dt><strong><a name="base64" class="item"><strong>-base64</strong></a></strong></dt>
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<dd>
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<p>Perform base64 encoding on the output.</p>
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</dd>
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<dt><strong><a name="hex" class="item"><strong>-hex</strong></a></strong></dt>
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<dd>
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<p>Show the output as a hex string.</p>
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</dd>
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</dl>
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<p>
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</p>
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<hr />
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<h1><a name="see_also">SEE ALSO</a></h1>
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<p><em>RAND_bytes(3)</em></p>
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<p>
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</p>
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<hr />
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<h1><a name="copyright">COPYRIGHT</a></h1>
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<p>Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.</p>
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<p>Licensed under the OpenSSL license (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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<a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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</body>
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</html>
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