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pySQRL

Python SQRL (Secure QR Login) Client

What is SQRL?

A newly proposed authentication scheme from Steve Gibson of GRC.com. It allows for user authentication without the need of:

  • Username / Password pair
  • OTP (One Time Password)
  • Third party Interactions
  • Revealing your identity during login
  • An in-band authentication exchange

In a normal web authentication system your credentials are stored with the site you are trying to access. If the site were to be compromised yours and every other users' account information may be accessible; allowing the intruder to attempt to use your credentials elsewhere. The best part about SQRL is that the site never has your login credentials. With SQRL you never send your "password". The site authenticates you by verifying your identity by using a private / public key signature. This ends up being vastly more secure.

Details can be found here: https://www.grc.com/sqrl/sqrl.htm

The SQRL protocol is new and is subject to change. I'll try my best to follow the published implementation found here: https://www.grc.com/sqrl/details.htm

Install

This package requires ed25519, docopt and pyinotify

 git clone http://github.com/bushxnyc/sqrl.git
 cd sqrl
 sudo python setup.py install

Usage

 Usage: sqrl [-d] [-n] [--path=<Dir>] <SQRLURL>

 Options:
      -d               Debugging output
      -n               Notify via libnotify (Gnome)
      -p --path=<Dir>  Path for config and key storage

 Example:
     sqrl "sqrl://example.com/login/sqrl?d=6&nut=a95fa8e88dc499758"

You feed the sqrl URL provided by the authentication service to the script and it uses it to submit an authentication request on your behalf. Depending on how the site is designed, you may automatically get logged in. It's that simple.

Features

  • Debug - Displays the content of the payload to you for verification
  • Notification - Displays notifications on successful or failed auth attempts (Gnome Only)

Debug

When the [-d] argument is given the script outputs all the components of the request.

Url: localhost:8080/sqrl?nut=1bfe7ef6f9989bd5709d61f7ac28195e&sqrlver=1&sqrlkey=Zl_nrges0MGPRelRoH9SEwwPcARQSA0QmYNx-ZDcOKU
Domain: "localhost"
SQRLver: 1
SQRLkey: Zl_nrges0MGPRelRoH9SEwwPcARQSA0QmYNx-ZDcOKU
SQRLsig: LtYQU_j5Lwp6c0TrWEGhP0tj5o_PM8yni_tLmrG375aEIkUNdJzWl_XmLUN-dtZHuKWP1pf8iNUVSSyYRq3QDA
signature is good

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Minimal SQRL WIP

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