title: 'openssl genrsa' doesn't work when I use AES
body: <p>I have a problème when I try to generate a Ssh Key as requested in the instructions of this Symfony Bundle :
  <a href="https://github.com/lexik/LexikJWTAuthenticationBundle/blob/master/Resources/doc/index.md#getting-started" rel="nofollow noreferrer">LexikJWTAuthenticationBundle</a></p>
  
  <p>When I use this command :</p>
  
  <pre><code>openssl genrsa -out config/jwt/private.pem -aes256 4096
  </code></pre>
  
  <p>The process doesn't finish, here is what I have : <a href="https://i.stack.imgur.com/D4TBF.png" rel="nofollow noreferrer">openssl genrsa with AES</a></p>
  
  <p>But it works perfectly without the use of AES (either: -aes256 or 128 or other ..)</p>
  
  <p>Do you know why ?</p>
  
  <p>(Then, do you think I can continue without using AES ?)</p>
  
  <p>Thank you.</p>