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You will need to download PUTTYGEN, PUTTY
*You should not generate a SSH-1(RSA) as this is for backwards compatibility only and is not secure.
This creates a key pair that is password locked this cause the server to ask for a password when you log into the server along with using the SSH public/private key pair
Please save them to secure place on your harddrive that only the user has access too
A good idea is to backup the public and private key pair to a usb flashdrive and store the key in secure location. Encase something happens to the key pair stored on your system
You can also open the public key in notepad and copy the key from there (the text editor you use most not change the formatting or else the key will not work. The authorized_keys file stores all of your public keys for this server. .ssh/authorized_keys file stores each key on single line. This is way you need to open the file in a text editor that does not change the text formatting
If you would like to setup auto-login
The link to download PuTTYgen is working fine.