If you are using a linux machine at your end, please follow the steps given
below.

The public portion of this key pair will reside on the servers being connected
to, while the private portion needs to remain on a secure local area of your
system, by default in ~/.ssh/id_rsa. The key generation can be done
with the ssh-keygen utility.

client$ mkdir ~/.ssh
client$ chmod 700 ~/.ssh
client$ ssh-keygen
Enter file in which to save the key (/techhome/client/.ssh/id_rsa):

Here simply hit enter so that the key will be saved onto the default path –
ie. ~/.ssh/id_rsa . If you want to make it more secure, you can give the path
where you want to save the key.

Enter passphrase (empty for no passphrase): …
Enter same passphrase again: …

For the above questions, enter a strong password...