Generate ssl certificate online

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'd like to generate a CRT/KEY couple SSL files with Let's Encrypt (with manual challenge). I'm trying something like this: certbot certonly -manual -d mydomain.com But I only get these files. 10 3 Windows servers use.pfx/.p12 files to contain the public key file (SSL Certificate) and its unique private key file. The Certificate Authority (CA) provides you with your SSL Certificate (public key file). You use your server to generate the associated private key. How can I find the private key for my SSL certificate. If you just got an issued SSL certificate and are having a hard time finding the corresponding private key, this article can help you to find that one and only key for your certificate. Online CSR and Key Generator 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.

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.

  • This page describes how to get a private key and an SSL certificate for Hipchat Server.These are used to provide HTTPS-encrypted access to the web-based administration pages and to encrypt the messages sent through Hipchat Server.
  • Jul 08, 2009  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 modssl. Key, CSR and CRT File Naming Convention.
  • 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

Generate Ssl Key

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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You can also use Microsoft IIS to generate a Private Key and CSR.

How to generate a CSR in Microsoft IIS 7

1. Click Start, then Administrative Tools, then Internet Information Services (IIS) Manager.
2. Click on the server name.
3. From the center menu, double-click the 'Server Certificates' button in the 'Security' section (it is near the bottom of the menu).

4. Next, from the 'Actions' menu (on the right), click on 'Create Certificate Request.' This will open the Request Certificate wizard.

5. In the 'Distinguished Name Properties' window, enter the information as follows:

  1. Common Name - The name through which the certificate will be accessed (usually the fully-qualified domain name, e.g., www.domain.com or mail.domain.com).
  2. Organization - The legally registered name of your organization/company.
  3. Organizational unit - The name of your department within the organization (frequently this entry will be listed as 'IT,' 'Web Security,' or is simply left blank).
  4. City/locality - The city in which your organization is located.
  5. State/province - The state in which your organization is located.

6. Click Next.
7. In the 'Cryptographic Service Provider Properties' window, leave both settings at their defaults (Microsoft RSA SChannel and 2048) and then click next.

8. Enter a filename for your CSR file.

9. Remember the filename that you choose and the location to which you save it. You will need to open this file as a text file and copy the entire body of it (including the Begin and End Certificate Request tags) into the online order process when prompted

2. Back Up Private Key

To backup a private key on Microsoft IIS 6.0 follow these instructions:

1. From your server, go to Start > Run and enter mmc in the text box. Click on the OK button.
2. From the Microsoft Management Console (MMC) menu bar, select Console > Add/Remove Snap-in.
3. Click on the Add button. Select Certificates from the list of snap-ins and then click on the Add button.

4. Select the Computer account option. Click on the Next button.

Generate Ssl Certificate Key File Windows

5. Select the Local computer (the computer this console is running on) option. Click on the Finish button.
6. Click on the Close button on the snap-in list window. Click on the OK button on the Add/Remove Snap-in window.
7. Click on Certificates from the left pane. Look for a folder called REQUEST or 'Certificate Enrollment Request> Certificates

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8. Select the private key that you wish to backup. Right click on the file and choose > All Tasks > Export

9. The certificate export wizard will start, please click Next to continue. In the next window select Yes, export the private key and click Next

10. Leave the default settings selected and click Next.

11. Set a password on the private key backup file and click Next
12. Click on Browse and select a location where you want to save the private key Backup file to and then click Next to continue. By default the file will be saved with a .pfx extension.
13. Click Finish, to complete the export process

Generate Ssl Certificate Key File Free

3. Convert to RSA Private Key Format

The private key is backed up as a ‘.pfx’ file, which stands for Personal Information Exchange.

To convert it to RSA Private Key format supported by inSync:

Generate Ssl Certificate Key File Download

1. Download and install latest version of OpenSSL for windows from http://www.slproweb.com/products/Win32OpenSSL.html.

Note: OpenSSL requires Visual C++ 2008 Redistributables which can be downloaded from the same website.

Ssl Certificate Generate Windows

2. Open command prompt, navigate to C:OpenSSL-Win32bin>, and run the following commands.

3. The private key will be saved as ‘myserver.key’.

4. Carefully protect the private key. Be sure to backup the private key, as there is no means to recover it, should it be lost.

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