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Rename

<?xml version="1.0" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>openssl-genrsa</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rev="made" href="mailto:root@localhost" />
</head>

<ul id="index">
 <li><a href="#NAME">NAME</a></li>
 <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
 <li><a href="#DESCRIPTION">DESCRIPTION</a></li>
 <li><a href="#OPTIONS">OPTIONS</a></li>
 <li><a href="#NOTES">NOTES</a></li>
 <li><a href="#SEE-ALSO">SEE ALSO</a></li>
 <li><a href="#HISTORY">HISTORY</a></li>
 <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
</ul>

openssl-genrsa - generate an RSA private key

<h1 id="SYNOPSIS">SYNOPSIS</h1>

openssl genrsa [-help] [-out filename] [-passout arg] [-aes128] [-aes192] [-aes256] [-aria128] [-aria192] [-aria256] [-camellia128] [-camellia192] [-camellia256] [-des] [-des3] [-idea] [-F4] [-f4] [-3] [-primes num] [-verbose] [-traditional] [-rand files] [-writerand file] [-engine id] [-provider name] [-provider-path path] [-propquery propq] [numbits]

<h1 id="DESCRIPTION">DESCRIPTION</h1>

This command has been deprecated. The <a href="../man1/openssl-genpkey.html">openssl-genpkey(1)</a> command should be used instead.

This command generates an RSA private key.

<h1 id="OPTIONS">OPTIONS</h1>

<dl>

Print out a usage message.

</dd>
<dt id="out-filename">-out filename</dt>
<dd>

Output the key to the specified file. If this argument is not specified then standard output is used.

</dd>
<dt id="passout-arg">-passout arg</dt>
<dd>

The output file password source. For more information about the format see <a href="../man1/openssl-passphrase-options.html">openssl-passphrase-options(1)</a>.

</dd>
<dt id="aes128--aes192--aes256--aria128--aria192--aria256--camellia128--camellia192--camellia256--des--des3--idea">-aes128, -aes192, -aes256, -aria128, -aria192, -aria256, -camellia128, -camellia192, -camellia256, -des, -des3, -idea</dt>
<dd>

These options encrypt the private key with specified cipher before outputting it. If none of these options is specified no encryption is used. If encryption is used a pass phrase is prompted for if it is not supplied via the -passout argument.

</dd>
<dt id="F4--f4--3">-F4, -f4, -3</dt>
<dd>

The public exponent to use, either 65537 or 3. The default is 65537. The -3 option has been deprecated.

</dd>
<dt id="primes-num">-primes num</dt>
<dd>

Specify the number of primes to use while generating the RSA key. The num parameter must be a positive integer that is greater than 1 and less than 16. If num is greater than 2, then the generated key is called a &#39;multi-prime&#39; RSA key, which is defined in RFC 8017.

</dd>
<dt id="verbose">-verbose</dt>
<dd>

Print extra details about the operations being performed.

</dd>
<dt id="traditional">-traditional</dt>
<dd>

Write the key using the traditional PKCS#1 format instead of the PKCS#8 format.

</dd>
<dt id="rand-files--writerand-file">-rand files, -writerand file</dt>
<dd>

See <a href="../man1/openssl.html">&quot;Random State Options&quot; in openssl(1)</a> for details.

</dd>
<dt id="engine-id">-engine id</dt>
<dd>

See <a href="../man1/openssl.html">&quot;Engine Options&quot; in openssl(1)</a>. This option is deprecated.

</dd>
<dt id="provider-name">-provider name</dt>
<dd>

</dd>
<dt id="provider-path-path">-provider-path path</dt>
<dd>

</dd>
<dt id="propquery-propq">-propquery propq</dt>
<dd>

See <a href="../man1/openssl.html">&quot;Provider Options&quot; in openssl(1)</a>, <a href="../man7/provider.html">provider(7)</a>, and <a href="../man7/property.html">property(7)</a>.

</dd>
<dt id="numbits">numbits</dt>
<dd>

The size of the private key to generate in bits. This must be the last option specified. The default is 2048 and values less than 512 are not allowed.

</dd>
</dl>

<h1 id="NOTES">NOTES</h1>

RSA private key generation essentially involves the generation of two or more prime numbers. When generating a private key various symbols will be output to indicate the progress of the generation. A . represents each number which has passed an initial sieve test, + means a number has passed a single round of the Miller-Rabin primality test, * means the current prime starts a regenerating progress due to some failed tests. A newline means that the number has passed all the prime tests (the actual number depends on the key size).

Because key generation is a random process the time taken to generate a key may vary somewhat. But in general, more primes lead to less generation time of a key.

<a href="../man1/openssl.html">openssl(1)</a>, <a href="../man1/openssl-genpkey.html">openssl-genpkey(1)</a>, <a href="../man1/openssl-gendsa.html">openssl-gendsa(1)</a>

<h1 id="HISTORY">HISTORY</h1>

This command was deprecated in OpenSSL 3.0.

<h1 id="COPYRIGHT">COPYRIGHT</h1>

Licensed under the Apache License 2.0 (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.

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