Perhaps the private key is still somewhere in your system - it should be a.key file. Which command did you use to make the CSR? Note that if you don't have the private key anymore then this certificate is useless and you'll need to request a new one. Edit: possible duplicate of Apache - Generate private key from an existing.crt file. Apr 12, 2020 All the commands and steps will remain the same as we used above to generate self signed certificate, the only difference would be that we will not use any encryption method while we create private key in step 1. Openssl generate private key. In this example with openssl genrsa we will not use any encryption.

1. Linux Generate Private Key From Certificate Linux Code
2. Linux Generate Private Key From Certificate Linux Free
3. Linux Generate Private Key From Certificate Linux Pdf

CSR stands for ‘Certificate Signing Request’, that is generated on the server where the certificate will be used on. A CSR contains information about to your organization and domain name, locality, and country and a public key that will be included in your certificate.

This article has 3 methods to create CSR (Certificate Signing Request) on Linux systems. You can choose any one of below methods. All methods will do the same task, only they have a detailed explanation.

Method 1 – Using Single Command

We can create CSR using the single command like below. But make sure you have installed OpenSSL package on your system. The below command will first create a private key and then generate CSR. This command will also require few details as input. Generate new private key ec2 instance.

Method 2 – Short Instructions

Below are three simple commands to generate CSR. You may also use detailed instructions to do it.

Method 3 – Detailed Instructions

Step 1: Install Required Packages.

Linux Generate Private Key From Certificate Linux Code

In order to generate CSR, you required OpenSSL to be installed on your system. If it is not already installed use below command to install it.

Step 2: Generate Key for your Domain.

Firstly you required root access to generate a key file. So login as root and use below command to generate a key.

Sample output: Generate new ssh key putty.

At the end of the command, it showing 2048, which is the length of the key in bits. Most of CA required 2048 bit length keys. Above command will create a key file tecadmin.net.key, which is used in step 3.

Step 3: Generate CSR for your Domain using Key.

After generating a key, next steps are to generate CSR for the domain. Use below command to generate CSR file, This command will prompt for your organization and common name, locality, email, and country. Common Name must be the same as your domain name.

Sample Output:

Above command will generate a file tecadmin.net.csr in the current directory, Use this file to order your SSL from CA (Certificate Authority).

Linux Generate Private Key From Certificate Linux Free

References:

Linux Generate Private Key From Certificate Linux Pdf

http://wiki.centos.org/HowTos/Https
http://www.centos.org/docs/4/4.5/System_Administration_Guide/Apache_HTTP_Secure_Server_Configuration-Generating_a_Key.html