How to export an SSL certificate from Apache server?

When you want to move an SSL certificate from one server to another server, you need to perform the following steps:

  1. Login to your old server as root user.

  2. Find .crt and .key files of your domain’s SSL certificate. You can use following commands for finding the files:
    find / -name '*.crt' find / -name '*.key'

  3. Generally, these two files will be located under following path:
    /etc/ssl/

  4. So, the full file name should be as follows:
    /etc/ssl/certs/YOUR_DOMAIN_NAME.crt /etc/ssl/private/YOUR_DOMAIN_NAME.key

  5. Now, you need to run following command to export the SSL:
    • openssl pkcs12 -export -out OUTPUT_FILENAME -inkey KEY_FILENAME -in CERTIFICATE_FILENAME
    • Parameters should be:
      1. OUTPUT_FILENAME: File name with full path for generating file.KEY_FILENAME : Full path of .key file (i.e. : /etc/ssl/private/DOMAIN.key).
      2. CERTIFICATE_FILENAME: Full path of .crt file.(i.e.: /etc/ssl/certs/DOMAIN.crt).

  6. You will be asked to set a password for your file. Enter the password and re-enter it to confirm that password. This will create the .pfx file at the given path.

  7. Download this .pfx file to another server in which you want to install this certificate.
Notes:
  1. These steps are performed on CentOS 5.6. For other Linux based distributions, it would be similar.
  2. These steps can only be performed if you have the root access to your Linux VPS /Dedicated Server.

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