Mac/Linux/Windows(PowerShell)

Step 1 : Check for existing SSH key pair
Before generating new SSH key pair first check if you have an SSH key on your local machine. 
ls ~/.ssh/id_*.pub
If there are existing keys, please move to Step 3
Step 2 : Generate a new SSH Keypair
Mac/Linux
Windows (PowerShell)
ssh-keygen -t rsa
ssh-keygen.exe
Press Enter to accept the default file location and file name. 
The ssh-keygen will ask you to type a secure passphrase. This is optional. If you don't want to use a passphrase just press Enter
Verify the SSH keys are generated correctly, you should see two files id_rsa and id_rsa.pub under ~/.ssh directory.
DO NOT upload or send the private key. 
Step 3 : Copy the public key to Oscar
You will now need to copy your public key  to Oscar. There are two ways to acomplish this.
With ssh-copy-id
If your OS comes with the ssh-copy-id utility, then you'll be able to copy your public key into Oscar as follows:
ssh-copy-id <username>@ssh.ccv.brown.edu
You will be prompted for a Password. The public key will be appended to the authorized_keys file on Oscar. 
If you used a custom name for your key instead of the default id_rsa then you'll need pass the name of your key to ssh-copy-id i.e.,
ssh-copy-id -i ~/.ssh/<keyname> <username>@ssh.ccv.brown.edu
Without ssh-copy-id
If your system does not come with the ssh-copy-id utility installed, then you'll need to copy your public key by hand.
1.Get the contents of id_rsa.pub file. One option is to use cat in your teminal
 cat id_rsa.pub. 
2.Copy the contents of this file to your clipboard, as we need to upload it to Oscar.
3.Login into Oscar via regular ssh ssh <username>@ssh.ccv.brown.edu. Once you are on the login node, open the authorized_keys file with your text editor of choice e.g.,

vim ~/.ssh/authorized_keys

or

nano ~/.ssh/authorized_keys

Add your public keys to end of this file. Save and exit. 
Step 4 : Login to Oscar using your SSH keys 
ssh <username>@sshcampus.ccv.brown.edu
If everything went well, you will be logged in immediately withouth prompting you for a password. 
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SSH Key Login (Passwordless SSH)

Windows(PuTTY)

Last modified 4mo ago