SSH key generation for authentication¶

You must generate a key to be able to clone and work with the SPM repository. To do this, in your GitHub account go to “Organizations” and then in the left panel press “SSH and GPG keys”. In “SSH keys”, press the green button “New SSH key”

Add a title to your key in the field “Title”. Then, in the field “Key”, copy-paste the key you will generate with the following steps:

Open a terminal and in your home directory type:

ssh-keygen -t ed25519 -C *your_email*

It will ask you to “Enter passphrase (empty for no passphrase):”. You can press enter and not create a passphrase or set one that you will have to confirm later.

The output will be similar to this:

Generating public/private ed25519 key pair.
Enter file in which to save the key (/home/*your_user*/.ssh/id_ed25519): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/*your_user*/.ssh/id_ed25519
Your public key has been saved in /home/*your_user*/.ssh/id_ed25519.pub
The key fingerprint is:
SHA256:T3kB6rMhciPlSqcHp3SDmmoFu+ZDqs7IxFVcuj4JNeY *your_email*
The key's randomart image is:
+--[ED25519 256]--+
|       .  .      |
|    . o  . .     |
|   . S  .   .    |
| .. * o.   . .   |
|  o* E. D o .    |
|..=oB.+. * .     |
| +=*.X  . .      |
|**. *.o          |
|X= u.u           |
+----[SHA256]-----+

In the directory ~/.ssh now you will have 2 new files similar to these:

id_ed25519  id_ed25519.pub

The public key is in the file with extension .pub. To read it, open the file or type:

cat ~/.ssh/id_ed25519.pub

The output/key should be something similar to this:

ssh-ed25519 AAAAC5NzaC1lZDI1NTE4AAAANI/iaJJ7eHWs+i2hxxQTX+xcalwd+QlhDSwgIkh3cvEc *your_email_here*

4. Copy this key and paste it in the field “Key” in your GitHub account.

Finally, to clone the GitHub repository, type in a Terminal:

git clone git@github.com:spm/spm.git

You will have to enter the passphrase you created previously.