Setting-up by copying existing keys from another machine
Simply copy the contents of the folder %USERPROFILE%.ssh from your source computer, to the same location on your destination computer. The folder contains five files:
known_hosts id_rsa.pub id-rsa github_rsa.pub github_rsa
Note: When you get to step where you are to add your SSH key to GitHub, email your key to the git administrator instead.
Your private key
Saved in: C:\Users\Chris.ssh\id_rsa
Your public key
Saved in: C:\Users\Chris.ssh\id_rsa.pub.