How to use self signed certificate with XAMPP for HTTPS requests using cURL?

I have installed XAMPP and I need to test some HTTPS requests. First of all, I tried to configure XAMPP to use HTTPS requests.

This is what I did:

1) In the php.ini file I have uncommented openssl module

.

2) In the httpd.conf file I have uncommented LoadModule ssl_module modules/mod_ssl.so

3) In the httpd-ssl.conf file I have redirected

SSLCertificateFile "conf/ssl.crt/ipm.crt"

and

SSLCertificateKeyFile "conf/ssl.key/ipm.key

"to my .crt and .key files.

4) I put ipm.crt and ipm.key files in apache folders ssl.crt

and ssl.key

inside XAMPP.

5) I created my own certificate by running:

openssl req -config openssl.cnf -new -out ipm.csr -keyout ipm.pem

openssl rsa -in ipm.pem -out ipm.key

openssl x509 -in ipm.csr -out ipm.crt -req -signkey ipm.key -days 365

      

        
        
        
      

    

I am now using a script to send an XML file. I am using cURL and my code is:

<?php
  /*
   * XML Sender/Client.
   */
  // Get our XML. You can declare it here or even load a file.


  $xml = file_get_contents("data.xml");


  // We send XML via CURL using POST with a http header of text/xml.
  $ch = curl_init();

  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);

  curl_setopt($ch, CURLOPT_CAINFO,  getcwd().'/cert/ipm.crt');
  curl_setopt($ch, CURLOPT_SSLCERT, getcwd().'/cert/ipm.pem');
  curl_setopt($ch, CURLOPT_SSLCERTPASSWD,'password');


  //I use this line only for debugging through fiddler. Must delete after done with debugging.
  curl_setopt($ch, CURLOPT_PROXY, '127.0.0.1:8888');

  // set URL and other appropriate options
  curl_setopt($ch, CURLOPT_URL, "https://ipv4.fiddler/iPM/receiver.php");
  curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: text/xml'));
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_setopt($ch, CURLOPT_POST, 1);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
  curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
  curl_setopt($ch, CURLOPT_REFERER, 'https://ipv4.fiddler/iPM/receiver.php');
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  $ch_result = curl_exec($ch);
  echo "Result = ".$ch_result;

  echo 'Curl error: ' . curl_error($ch);

  curl_close($ch);
  // Print CURL result.
?>

      

        
        
        
      

    

But I am returning this error: Curl error: unable to use client certificate (no key found or wrong pass phrase?)

However, when I created my certificate, I put the phrase as the password: password

Any ideas on this matter?