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I have just got a free StartSSL certificate, I received a .p12 file, and only a .key file. I'm not really sure how to install this on my server and replace the current one. It's running Kloxo latest and it's not accepting any of the files.

Is there any way I can convert this to the traditional .key/.cert file and/or install this another way?

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closed as off-topic by HopelessN00b Apr 9 '15 at 18:50

  • This question does not appear to be about server, networking, or related infrastructure administration within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

up vote 0 down vote accepted


  1. Login into your startssl account
  2. click at Tool Box -> Retrieve Certificate.

Here you can get .crt format for your certificate.

select your hostname and click continue to get your certificate.


you given key during Certificates wizard and please keep in safe place. key will not given after certificate was issued.

Decrypt the private key with the OpenSSL utility: openssl rsa -in ssl.key -out ssl.key or use the utility from the Tool Box.

Install into kloxo

  1. go to home, click SSL certificates. click upload txt files
  2. copy & paste Key, Crt and StartSSL CA and click Add
  3. click ssl certificates again and select previously created certificate
  4. click Set SSL for kloxo and select your slave ID or master ID
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A .p12 file is a PKCS#12 Personal Information Exchange Syntax Standard file. I think the info on this StackOverflow question will help you convert the .p12 into PEM format (e.g. something that can work as a .cert/.cer file). In particular, there's even a link to a site where you can do the conversion online:

Once you have the .cer file, I think Kloxo will be happy to import it.

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