To install the public key, Log into the server, edit the authorizedkeys file with your favorite editor, and cut-and-paste the public key output by the above command to the authorizedkeys file. Save the file. Configure PuTTY to use your private key file (here keyfile.ppk). Then test if login works. See configuring public key authentication for.
- Generate Public Key From Private Key Openssl
- Openssl Create Public Key
- Openssl Generate Rsa Private Key
Generate CSR - OpenSSL
Introduction
This article provides step-by-step instructions for generating a Certificate Signing Request (CSR) in OpenSSL. This is most commonly required for web servers such as Apache HTTP Server and NGINX. If this is not the solution you are looking for, please search for your solution in the search bar above.
Switch to a working directory
GNU/Linux & Mac OS X users:
Open a terminal and browse to a folder where you would like to generate your keypair
Windows Users:
Navigate to your OpenSSL 'bin' directory and open a command prompt in the same location.
Generate a CSR & Private Key:
openssl req -out CSR.csr -new -newkey rsa:2048 -keyout privatekey.key
To generate a 4096-bit CSR you can replace the rsa:2048 syntax with rsa:4096 as shown below.
openssl req -out CSR.csr -new -newkey rsa:4096 -keyout privatekey.key
Note: You will be prompted to enter a password in order to proceed. Keep this password as you will need it to use the Certificate.
Generate Public Key From Private Key Openssl
Fill out the following fields as prompted:
Note: The following characters can not be accepted: < > ~ ! @ # $ % ^ * / ( ) ?.,&
Openssl Create Public Key
| Field | Example |
|---|---|
| Country Name | US (2 Letter Code) |
| State or Province | New Hampshire (Full State Name) |
| Locality | Portsmouth (Full City name) |
| Organization | GMO GlobalSign Inc (Entity's Legal Name) |
| Organizational Unit | Support (Optional, e.g. a department) |
| Common Name | www.globalsign.com (Domain or Entity name) |
Openssl Generate Rsa Private Key
You should now have a Private Key (privatekey.key) which should stay on your computer, and a Certificate Signing Request (CSR.csr), which can be submitted to GlobalSign to sign your public key. Each of these files can be viewed in a plain text editor such as Notepad, TextEdit, Vi, Nano, and Notepad++.