Create a PKCS12 from openssl files

You have a private key file in an openssl format and have received your SSL certificate. You'd like now to create a PKCS12 (or .pfx) to import your certificate in an other software?

Here is the procedure! First, download the .p7b file from the status page of your SSL certificate (Click on the "View the certificate" button and then on "View the PKCS7 certificate and finnaly click on the provided link).

Convert this file in a text format (PEM in openssl language):

openssl pkcs7 -in p7-0123456789-1111.p7b -inform DER -out result.pem -print_certs

Now create the PKCS12 file thats will hold your private key and your certification chain:

openssl pkcs12 -export -inkey your_private_key.key  -in result.pem -name my_name -out final_result.p12

You'll be asked to define an encypherment password for this record (it will be needed for the importation in IIS) and the private key password if you created one!

You can now use the final_result.p12 file in any software taking it! On IIS rename your file to have a .pfx extention, it will be a lot easier.