title: Composer Installer Error : Signature mismatch
body: <p>i have a error : <strong>Signature mismatch, could not verify the phar file integrity</strong> when install composer on windows OS.</p>
  
  <p>When inspecting the code, I come across the <code>$signature</code> variable that does not have a relationship in the <code>verifyAndSave()</code> function call. It's normal ?</p>
  
  <p>But, if I comment test with the <code>verifyAndSave()</code> function, the installation takes place correctly...</p>
  
  <p><a href="https://i.stack.imgur.com/S4MFK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/S4MFK.png" alt="enter image description here"></a></p>