There are many reasons you might want to create a key pair on Linux, more specifically on Ubuntu.

For more information about key pairs, see this.

Description (how to do it): Generate a key/pair or use an existing private key: If you have a private key: Open puttygen. Create a new 'authorizedkeys' file (with Notepad): Copy your public key data from. Upload the key to a Linux server. Free black desert online steam key generator. Set proper permissions: Make a.ssh. Jan 25, 2016  Objective: To disable password based logins and login only using key based authentication. Will create a pem file which will be used to access the server. OS used is CentOS 7 64bit. Note: Change the trb name to your own key name. Apr 02, 2019  Home Linux Basics: How To Create and Install SSH Keys on the Shell. Generating a key pair offers users two lengthy strings of characters corresponding to a public as well as a private key. Users can, thus, place the public key on any server, and subsequently, unlock the same by connecting to it with a client that already possesses the. Creating a key pair using Amazon EC2 Importing your own public key to Amazon EC2 Tagging a Key Pair Retrieving the public key for your key pair on Linux Retrieving the public key for your key pair on Windows Retrieving the public key for your key pair from your instance Verifying your key pair's fingerprint Deleting your key pair Adding or replacing a key pair for your instance Connecting to. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un.x-like operating systems. (or a signature). Your shirish-public-key.txt looks like it’s just that. Generate GPG secret key from public key and passphrase. How to check openpgp (gpg) signature against a set of public key blocks.

If your server is an Amazon EC2 Server Instance, you might want to look at more specific information here /windows-81-build-9600-key-generator.html.

Key pairs are just one way to log into a system. (Perhaps the one you currently use is regular username and password ssh login). Key pairs are generally more secure than password logging in.

One thing you have to keep in mind is that using key pairs is a two-way method: you'll need to create a private key and a public-key.

Personally, I use them so I can use git remotely. Another very common use of public/private key pairs is when you want to, for example, scp a file from your local server into a remote server without needing to type the ssh password lots of times. Another good reason to use this is to disable anyone from logging into your server, which reduces the chance someone will break into your server.(I'm not an expert on security so do you own research before securing your web server, as it's a very important step.)

Ok so let's start: Ubuntu has a very handy way to accomplish this:

Create yourself a .ssh directory if you don't already have one.

Then type this command to create the key per se:

Public Key Example

(you'll be prompted for a passphrase. It adds another layer of security still. You can choose one or leave it blank.)

cd to your home folder to check the key has been created:

You should see two files: id_rsa and id_rsa.pub.

Now you'll need to transfer the public key (the .pub file) to your remote server. Again, Ubuntu has a simple command to do this:

If the last step was successful, you should be able to log into your server with no password (only from this machine, of course!. Ubuntu will use the private key wev'e just created to authenticate.)

et voilà

troubleshooting: if a command isn't working, try issuing that command again with sudo.

Linux Generate Public Key From Pem File

see also: official ubuntu docs