Open a Terminal.


Run ssh-keygen to generate a new key pair substituting your email address.

       

ssh-keygen -t rsa -b 4096 -C "your_email@example.com"


This creates a new ssh key, using the provided email as a label.


Generating public/private rsa key pair.


 When you're prompted to "Enter a file in which to save the key,"enter a file name or press enter to accept the default file location.


Enter a file in which to save the key (/home/you/.ssh/id_rsa): [Press enter]


At the prompt, type a secure passphrase if desired


Enter passphrase (empty for no passphrase): [Type a passphrase]

Enter same passphrase again: [Type passphrase again]