SSH Keys

Configuring your SSH client to use keys instead of password

Putty

Generate a public/private key pair on your by using PuTTYgen as illustrated below:

Start PuTTYgen

Click the Generate button.You will be asked to move mouse to generate some randomness. After that the program will generate key and display the result.

Boxes "Key passphrase" and "Confirm passphrase" leave blank to be able to authenticate without passphrase.
Now, you can save public and private key.
You can recover the public key from the private key with PuTTYgen by clicking the Load button. But uou can not recover the private key from the public key.

SSH Secure Shell

From the menu choose Edit> Settings option and then Key Click the Generate button. Click Next
Select RSA type of the key. Click Next Wait until key is generated. Now, save public key into file by clicking Export button

Install the public key on the remote host