Generate Key File From Certificate

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Creating your privateKey.key file: Return to the certificate.txt file generated above. Copy the section starting from and including -BEGIN PRIVATE KEY- to -END PRIVATE. Create a new file using Notepad. Paste and save the information into the new Notepad file. Save the file as. Steps to generate a key and CSR. Set the OpenSSL configuration environment variable (optional). Generate a key file. Create a Certificate Signing Request (CSR). Send the CSR to a certificate authority (CA) to obtain an SSL certificate. Use the key and certificate to configure Tableau Server to. CREATE CERTIFICATE can load a certificate from a file, a binary constant, or an assembly. This statement can also generate a key pair and create a self-signed certificate. The Private Key must be. Before you can order an SSL certificate, it is recommended that you generate a Certificate Signing Request (CSR) from your server or device. Learn more about SSL certificates » A CSR is an encoded file that provides you with a standardized way to send DigiCert your public key as well as some. We have a wildcard certificate on our web host provider. I need to get that certificate onto our firewall for our SSL VPN, since our vpn certificate is expiring and there is no budget to renew it. The firewall vendor told me I need the certificate and the private key file since I cannot generate a CSR since the certificate already exists.

General CSR Creation Guidelines

Before you can order an SSL certificate, it is recommended that you generate a Certificate Signing Request (CSR) from your server or device. Learn more about SSL certificates »

A CSR is an encoded file that provides you with a standardized way to send DigiCert your public key as well as some information that identifies your company and domain name. When you generate a CSR, most server software asks for the following information: common name (e.g., www.example.com), organization name and location (country, state/province, city/town), key type (typically RSA), and key size (2048-bit minimum).

If you aren't sure of the exact company name or location when you generate the CSR, don't worry; we can change and finalize that information during our review process before we issue the certificate.

Once your CSR is created, you'll need to copy and paste it into the online order form when you go to purchase your SSL certificate. Online Certificate Order Form »

Generate ssh key in windows cmd. If you want to convert your website from HTTP to HTTPS, you need to get a SSL certificate from a valid organization like Verisign or Thawte. You can also generate self signed SSL certificate for testing purpose.

In this article, let us review how to generate private key file (server.key), certificate signing request file (server.csr) and webserver certificate file (server.crt) that can be used on Apache server with mod_ssl.

Key, CSR and CRT File Naming Convention

I typically like to name the files with the domain name of the HTTPS URL that will be using this certificate. This makes it easier to identify and maintain.

  • Instead of server.key, I use www.thegeekstuff.com.key
  • Instead of server.csr, I use www.thegeekstuff.com.csr
  • Instead of server.crt, I use www.thegeekstuff.com.crt

1. Generate Private Key on the Server Running Apache + mod_ssl

First, generate a private key on the Linux server that runs Apache webserver using openssl command as shown below.

The generated private key looks like the following.

2. Generate a Certificate Signing Request (CSR)

Using the key generate above, you should generate a certificate request file (csr) using openssl as shown below.

3. Generate a Self-Signed SSL Certificate

For testing purpose, you can generate a self-signed SSL certificate that is valid for 1 year using openssl command as shown below.


You can use this method to generate Apache SSL Key, CSR and CRT file in most of the Linux, Unix systems including Ubuntu, Debian, CentOS, Fedora and Red Hat.

4. Get a Valid Trial SSL Certificate (Optional)

Instead of signing it youself, you can also generate a valid trial SSL certificate from thawte. i.e Before spending the money on purchasing a certificate, you can also get a valid fully functional 21 day trial SSL certificates from Thawte. Once this valid certificate works, you can either decide to purchase it from Thawte or any other SSL signing organization.

This step is optional and not really required. For testing purpose, you can always use the self-signed certificate that was generated from the above step.

Go to Thwate trial certificate request page and do the following:

  • Select “SSL Web Server Certificate (All servers)” under the “select your trial certificate”.
  • Do not check the PKCS #7 check-box under the “configure certificate”
  • Copy/Paste the *.csr file that you generate above in the textbox under “certificate signing request (CSR)”
  • Click on next at the bottom, which will give you a 21-day free trial certificate.


Copy/Paste the trial certificate to the www.thegeekstuff.com.crt file as shown below.

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