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.
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.
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SSL.com’s public CSR and Key Generator is currently down for maintenance as part of our website’s redesign and update. We will be back soon with a new and updated version. In the mean time, we encourage our customers to learn about generating CSRs and keys in our customer portal’s CSR Manager.
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.
![Sale Sale](/uploads/1/2/5/8/125875496/596413423.png)
- 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:
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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Check a certificate installed on your server for a matching private key
Private Key Generator Ssl
The DigiCert Certificate Utility® for Windows has a feature that lets you find out if an SSL Certificate installed on your Windows server has a matching private key. You can also use this instruction to discover if the certificate is revoked.
DigiCert Utility: Check an SSL Certificate for a Matching Private Key
- On the Windows server where your SSL Certificate is located, download and save the DigiCert® Certificate Utility for Windows executable (DigiCertUtil.exe).
- Run the DigiCert® Certificate Utility for Windows (double-click DigiCertUtil).
- In the DigiCert Certificate Utility for Windows©, click SSL (gold lock), select the SSL Certificate that you want to check, and then click Test Key.
- In the Private Key Test window, you should see a green checkmark next to The private key was successfully tested.This verifies that the certificate has a matching and valid private key.
- Certificate Revoke Note:In the Private Key Test window, you should see a green checkmark next to Revocation check for certificate chain was successful.This verifies that the certificate's serial number is not listed on a revocation list.
Troubleshooting
Reissue Certificate
If you run into any errors when checking for a matching private key, you probably need to reissue your certificate. See Reissuing a DigiCert® SSL Certificate.
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Contact Us
If you continue to have any errors, please contact support ([email protected]) using the contact details from within the DigiCert Certificate Utility.
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