TYPE must be either ‘rsa' or ‘dsa'. FILENAME can be whatever you want, but I suggest making it clear a) which device this is for and b) which app this is for

ssh-keygen-prompt.sh

## The basic format of the `ssh-keygen` command is something like this:
# ssh-keygen -t TYPE -f FILENAME -C "COMMENT"

## Here's What I Used

  ssh-keygen -t rsa -f id_rsa_prompt_iphone5s -C "TJ Luoma iPhone 5s"

After I ran the ssh-keygen and entered the passphrase, I was left with two files: one was “id_rsa_prompt_iphone5s” (That’s the private key) and the other was “ id_rsa_prompt_iphone5s.pub” (That’s the public key).

The private key needs to be added to Prompt on your iOS device.

The public key should be added to ~/.ssh/authorized_keys on any Macs that you want to be able to ssh into without using your OS X password.

Note: You can also create the public/private key right on your iOS device from inside Prompt 2, which is much easier.