Open SSL Creating Certificate Signing Request — CSR Generation

A Certificate Authority will use a CSR to create your SSL certificate.

What is a CSR? A CSR or ‘Certificate Signing Request’ is a block of encrypted text, that is generated on the server that the certificate will be used on.

It contains information that will be included in your certificate, such as your organization name, common name (domain name), locality, and country. It also contains the public key that will be included in your certificate.

Run these OpenSSL commands, to generate your Certificate Signing Request.

Step 1: Generate a Private Key

$ openssl genrsa -out shellhacks.com.key 2048

If you need just to renew existence certificate and you already have the private key, you can skip this step and use it, instead of generating new one.

The number 2048 is the size of the key, in bits. Today, 2048 or higher is recommended for RSA keys, as fewer amount of bits is consider insecure or to be insecure pretty soon.

Step 2: Generate the CSR

$ openssl req -new -key shellhacks.com.key -out shellhacks.com.csr

The fields, required in a Certificate Signing Request, are listed below with explanations and examples :

Distinguished Name FieldExplanationExample
Common Name The fully qualified domain name (FQDN) for your web server. This must be an exact match. If you intend to secure the URL https://www.shellhacks.com/, then your CSR’s common name must be: www.shellhacks.com
Organisation The exact legal name of your organisation. Do not abbreviate your organisation name. ShellHacks Ltd.
Organisation Unit Section of the organisation, can be left empty if this does not apply to your case. Development department
City/Locality The city where your organisation is legally located. Balham
State/County/Region The state/county/region where your organisation is legally located. Must not be abbreviated. London
Country The two-letter ISO abbreviation for your country. GB
Email address The email address used to contact your organisation. info@shellhacks.com
0 (0)
Article Rating (No Votes)
Rate this article
Attachments
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Full Name
Email Address
Security Code Security Code
Related Articles RSS Feed
How to disable SSH cipher/ MAC algorithms for Linux and Unix
Viewed 4701 times since Fri, Aug 21, 2020
Super Grub2 Disk
Viewed 1094 times since Wed, May 22, 2019
30 Handy Bash Shell Aliases For Linux / Unix / MacOS
Viewed 279 times since Thu, Feb 11, 2021
How to encrypt a partition using LUKS?
Viewed 786 times since Fri, Jul 13, 2018
Linux Kernel /etc/sysctl.conf Security Hardening
Viewed 2527 times since Fri, Aug 3, 2018
RHEL: iSCSI target/initiator configuration on RHEL6
Viewed 1550 times since Sat, Jun 2, 2018
Linux PAM configuration that allows or deny login via the sshd server
Viewed 679 times since Wed, Oct 3, 2018
How To Run Multiple SSH Command On Remote Machine And Exit Safely
Viewed 944 times since Tue, Aug 6, 2019
How to retrieve and change partition’s UUID Universally Unique Identifier on linux
Viewed 868 times since Tue, Jul 17, 2018
logrotate How log rotation works with logrotate
Viewed 1295 times since Sun, Jan 12, 2020