Linux Generate Key And Csr
Feb 12, 2015 Creating a CSR – Certificate Signing Request in Linux To create a CSR, you need the OpenSSL command line utility installed on your system, otherwise, run the following command to install it. Then issue the following command to generate a CSR and the key that will protect your certificate. May 02, 2016 Generating a CSR with SAN at the command line Lately, I’ve explored creating my own CSRs for use with Let’s Encrypt, so I can control the common name and subject names. I’m neurotic enough that I can’t bear to let Let’s Encrypt decide. Mar 31, 2015 Generating CSR In Apache With OpenSSL. How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux. How To Generate an SSL Certificate Signing Request. Mar 12, 2019 In this article, we will demonstrate how to create a CSR (Certificate Signing Request) on a Linux system. Creating a CSR – Certificate Signing Request in Linux. To create a CSR, you need the OpenSSL command line utility installed on your system, otherwise, run the following command to install it. Nov 21, 2019 Above command will generate a private key in the file domain.key and certificate request in the file domain.csr and save it in your current directory. View and copy the contents of private key. You can view and store the private keys on your server that you may need later. However, the important thing is not to share it with anyone.
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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The following instructions will guide you through the CSR generation process on Nginx (OpenSSL). To learn more about CSRs and the importance of your private key, reference our Overview of Certificate Signing Request article. If you already generated the CSR and received your trusted SSL certificate, reference our SSL Installation Instructions and disregard the steps below.
1. Log in to your server’s terminal.
You will want to log in via Secure Shell (SSH).
2. Enter CSR and Private Key command
Generate a private key and CSR by running the following command:
Here is the plain text version to copy and paste into your terminal:
Note:Replace “server ” with the domain name you intend to secure.
3. Enter your CSR details
Enter the following CSR details when prompted:
- Common Name: The FQDN (fully-qualified domain name) you want to secure with the certificate such as www.google.com, secure.website.org, *.domain.net, etc.
- Organization: The full legal name of your organization including the corporate identifier.
- Organization Unit (OU): Your department such as ‘Information Technology’ or ‘Website Security.’
- City or Locality: The locality or city where your organization is legally incorporated. Do not abbreviate.
- State or Province: The state or province where your organization is legally incorporated. Do not abbreviate.
- Country: The official two-letter country code (i.e. US, CH) where your organization is legally incorporated.
Note: You are not required to enter a password or passphrase. This optional field is for applying additional security to your key pair.
4. Generate the order
Locate and open the newly created CSR in a text editor such as Notepad and copy all the text including:
/microsoft-office-home-and-student-2007-product-key-generator.html. Note 1: Your CSR should be saved in the same user directory that you SSH into unless otherwise specified by you.
Note 2: We recommend saving or backing up your newly generate “.key ” file as this will be required later during the installation process.
Return to the Generation Form on our website and paste the entire CSR into the blank text box and continue with completing the generation process.
Upon generating your CSR, your order will enter the validation process with the issuing Certificate Authority (CA) and require the certificate requester to complete some form of validation depending on the certificate purchased. For information regarding the different levels of the validation process and how to satisfy the industry requirements, reference our validation articles.
After you complete the validation process and receive the trusted SSL Certificate from the issuing Certificate Authority (CA), proceed with the next step using our SSL Installation Instructions for Nginx using OpenSSL.