You can generate a public and private key easily.
ssh-keygen # ssh-keygen.exe
This will prompt for a filename and will create 2 files, the private key and the public key. The public key will be filename.pub.
mv vscode_rsa ~/.ssh
Add a configuration to ~/.ssh/config.
Host 192.168.13.12 HostName 192.168.13.12 User nivethan ForwardAgent yes PreferredAuthentications publickey IdentityFile "C:\Users\nivethant\.ssh\vscode_rsa"
Now on the server, you need to add the public key to ~/.ssh/authorized_keys.
Copy the public key to the server and then run the command below.
cat vscode_rsa.pub >> ~/.ssh/authorized_keys
Now you can use ssh on the client machine and it will automatically connect using the keys.
If you get a permission denied issue, then it might be permissions on one of the folders is incorrect.
chmod 755 /home/nivethan chmod 700 /home/nivethan/.ssh chmod 600 /home/nivethan/.ssh/*