Setting up github and ssh keys.ppt
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This document outlines the steps to set up SSH keys for authenticating with GitHub repositories, offering a method to avoid entering usernames and passwords repeatedly. It covers checking for existing SSH keys, generating new keys, adding keys to the ssh-agent, and configuring GitHub accounts with these keys. Instructions include commands for generating keys, adding them to the ssh-agent, and testing the connection to GitHub.
Setting up github and ssh keys.ppt
- 1. Setting up Github and SSH Keys
- 2. SSH Key • When working with a GitHub repository, you'll often need to identify yourself to GitHub using your username and password. • An SSH key is an alternate way to identify yourself that doesn't require you to enter you username and password every time. • SSH keys come in pairs, a public key that gets shared with services like GitHub, and a private key that is stored only on your computer. If the keys match, you're granted access. • The cryptography behind SSH keys ensures that no one can reverse engineer your private key from the public one.
- 3. SSH Key • Using the SSH protocol, you can connect and authenticate to remote servers and services. With SSH keys, you can connect to GitHub Enterprise without supplying your username or password at each visit.
- 4. Checking Existing key • Before you generate an SSH key, you can check to see if you have any existing SSH keys. • Command to check an existing key is: $ ls –al ~/.ssh Note: I am executing this command in git bash
- 5. Checking Existing Key • SSH keys are stored under .ssh folder and by typing ~/.ssh you have specified the relative path of the key. • I have a key already created in 2019. So the output looks like this.
- 6. Generating a new SSH key • If you don't have an existing public and private key pair, or don't wish to use any that are available to connect to GitHub Enterprise, then generate a new SSH key. • Command is: $ ssh-keygen -t rsa -b 4096 -C „mukesh.27406@lpu.co.in" • Last argument is your github registered email ID.
- 7. Just press enter key leaving it with default file name.
- 8. • If you have an existing SSH key, it will ask the permission to overwrite, I have chosen “yes” for overwriting. • Next git bash prompts you for a pass phrase. Enter a simple and memorable passphrase. (Note: while typing and retyping the passphrase, it remains invisible) • You can leave it empty i.e. no passphrase • After entering passphrase, gitbash will produce and show output as in next screen.
- 10. • It has saved identification at /c/Users/Mandeep/.ssh/id_rsa • It has saved public key at /c/Users/Mandeep/.ssh/id_rsa.pub • It has generated a key fingerprint as: SHA256:dXzvWP3GysUzieTkA1R6ydz/j8v1213K0m7hy9Y//mM mandeep.13695@lpu.co.in • It has generated a key's randomart image
- 11. Adding your SSH key to the ssh-agent • The ssh-agent is a helper program that keeps track of user's identity keys and their passphrases. • The agent can then use the keys to log into other servers without having the user type in a password or passphrase again. • This implements a form of single sign-on (SSO). • The SSH agent is used for SSH public key authentication. • It uses SSH keys for authentication. • Users can create SSH keys using the ssh-keygen command and install them on servers using the ssh-copy-id command.
- 13. • Add your SSH private key to the ssh-agent. If you created your key with a different name, or if you are adding an existing key that has a different name, replace id_rsa in the command with the name of your private key file. $ ssh-add ~/.ssh/id_rsa • It will ask for your passphrase, after entering passphrase you will see following output.
- 15. Adding a new SSH key to your GitHub account • To configure your GitHub Enterprise account to use your new (or existing) SSH key, you'll also need to add it to your GitHub Enterprise account • After adding a new SSH key to your GitHub Enterprise account, you can reconfigure any local repositories to use SSH.
- 16. • Copy the SSH key to your clipboard. • If your SSH key file has a different name than the example code, modify the filename to match your current setup. When copying your key, don't add any newlines or whitespace. $ clip < ~/.ssh/id_rsa.pub
- 17. • Got to your github account and open settings.
- 18. • Open SSH and GPG keys
- 19. • Click on new SSH key button
- 20. • Enter a descriptive title. • Paste the contents from clipboard. (Note: Pasting the contents have to be the very next step after clip command) • Click on Add SSH key button. (Note: you may have to delete the existing SSH keys associated with your account)
- 21. • After you've set up your SSH key and added it to your GitHub Enterprise account, you can test your connection. • Command is: $ ssh –T git@<hostname> Testing SSH Key
- 22. • Practice this and discuss your problems and doubts using LPU live app.