1,234
edits
Changes
→SSH Keys
Using the magic of public key cryptography you can SSH to a linux machine without using a password. This topic is crucial - not only for this course but in the industry, SSH keys are used everywhere that linux servers are used.
Here's a modified diagram from [http://sebastien.saunier.me/blog/2015/05/10/github-public-key-authentication.html Sébastien Saunier's blog] that's a simple illustration of how SSH key authentication works(the one in the blog post had a significant error in it):
[[Image:ssh_connection_explained.png|800px]]
It's not a perfect complete diagram (e.g. you can't decrypt a message using a public key but you can use a public key to verify a signature) but it helps see all the parts of ssh key authentication in one place.
=== Public/Private key pair ===