OneTouch SSH protects a users's SSH login via a OneTouch approval. If anyone tries to SSH with your account into a protected machine, you'll receive a OneTouch notification allowing you to Approve or Deny access.

If there is no response to the OneTouch request within a set time, your Authy registered device will instead request confirmation via an SMS delivered Authy OneCode.

Without OneTouch or SMS verification, access will not be granted.

Install Go https://golang.org/doc/install and make sure both your GOROOT and GOPATH environmetal variables are set.

Create an SSH key

Open a terminal on your local computer and enter the following:
ssh-keygen -t rsa -C "your_email@example.com"
Just press <Enter> to accept the default location and file name
Enter, and re-enter, a passphrase when prompted.

This keypair should be saved in your ~/.ssh/ folder with the filename you chose.

go get github.com/dcu/onetouch-ssh

Get an Authy key from your Authy dashboard.

The next step is to run this command to setup your environment.

onetouch-ssh init

Type the following command:

onetouch-ssh add-user <email> <country code> <phone number> <public key>

NOTE: You can add keys in one of two ways.

File Path

onetouch-ssh add-user you@your.com 1 4155551234 ~/.ssh/id_rsa.pub

Pasted Key

onetouch-ssh add-user you@your.com 1 4155551234 ssh-rsa AAM8sBlW9CmrCQRFAAB3NzaC1yc2EAAHELPAADAQABAAABAQCyFQwZ2pVKfNS5iztqwaoNFaGpbLGvngQIMZgIsf+AUfGFt3c9Y4STUCKd0642miDvb6XPLINgAVPVJGzEZbZoU/+gUGGlNb+UNIVERSEFACTORY/NsE/sWqx2wuK93nvIoJXP7V+4jet9mKITt0B5aBH0mdmtY3AZS2JsksrzIcjDYldLwo+nIVFE4c4f+T7m9M8sBlW9CmrCQRF7nMbkVgSQ3Npt2IiMJaJ/1gWBxycSgMVMFiUS1Q2P3znUsBGp7p9CGssq02+NavML3sXFASyBSZ you@your.com

Next you can start adding the users using the form. Type Ctrl-c to finish.

To enable OneTouch for SSH just type:

onetouch-ssh enable

And that's it, you can try to ssh to the server.

When you try to connect to the ssh server it'll send you a push notification with a limited period of time to approve:

$ ssh ssh.server.com
Sending approval request to your device... [sent]

If the user doesn't approve the request before the time expires an Authy OneCode delivered via SMS is asked as a fallback.

$ ssh ssh.server.com
Sending approval request to your device... [sent]
You didn't confirm the request. A text-message was sent to your phone.
Enter security code:

When you try to run commands it'll display info about the command, the server IP and client IP.

When you try to push or fetch from git it won't display anything but you'll receive a push notification in your phone with the info. The information includes the server IP, client IP, geo location, branch, repository name.

Make sure your key and AuthyID are listed in the authorized_keys file

cat ~/.ssh/authorized_keys

Make sure the users you want to allow access to are listed in your users.list

cat ~/.authy-onetouch/users.list