On Windows follow this tutorial:
Use this command to generate a key;
This will then give you a response like;
Generating public/private rsa key pair.
Provide a filename to save the key in
Enter file in which to save the key (/Users/sbitrc/.ssh/id_rsa): example.pem
If you want to additionally add password protection for your key enter a passphrase, if not leave blank
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in example.pem.
Your public key has been saved in example.pem.pub.
Then copy this file to your .ssh folder and chmod it to 600
cp example.pem ~/.ssh/
chmod 600 ~/.ssh/example.pem
The data you need to provide to bryn is in your public key file. View this file using a text editor and cut and paste into the appropriate box to add the key to CLIMB.