On Thu, Sep 15, 2016 at 8:47 PM, Dave Brondsema <d...@brondsema.net> wrote:
> This is live on https://forge-allura.apache.org/ now if anyone wants to > test it > out for real :) I will also work on a site news post sooner or later, to > promote this new feature of Allura. > > Works fine for me and looks good as well. +1 Since, I am unable to work on code due to coursework at the moment I would like to volunteer for writing the post on the site along with a small tutorial this weekend if that is okay with you? > On 8/12/16 4:17 PM, Dave Brondsema wrote: > > I'd like to work on multifactor authentication soon. I've done some > thinking > > about it already, and here's what I've got so far. > > > > I reviewed several other sites to see how they use 2FA and put some > screenshots > > together of how I think it would work best: http://imgur.com/a/SDKHE > > > > Standard two-factor authentication uses TOTP (time-based one-time > password) > > which is all based on a secret key shared between the server and your > phone app > > (via a QR code) and then validation codes match up based on the current > time. > > Many python libraries support this, but cryptography.io seems like the > best > > option. > > https://cryptography.io/en/latest/hazmat/primitives/ > twofactor/#cryptography.hazmat.primitives.twofactor.totp.TOTP > > We'd want a plugin option for where to store the secret key: default to > mongo, > > so it "just works" for anyone running Allura, but other plugins to store > on home > > directories for example, so it works with other things (e.g that's where > the PAM > > module for TOTP stores keys). > > > > A newer and stronger protocol is U2F which is hardware keys like those > provided > > by Yubikey. Only Chrome works with this so far (and a Firefox plugin). > Google > > and GitHub support this, not many others yet. > https://twofactorauth.org/ shows > > who supports what. U2F can be run as a standalone server (U2FVAL) but > should > > also be possible to embed into a python service with this lib > > https://github.com/Yubico/python-u2flib-server This would be nice to > support, > > but maybe as a second phase though. > > > > Phone validation is an option too, and we have a PhoneService plugin. > However, > > that is susceptible to hacks, like someone changing your phone number to > a > > different device, and then getting your verification codes. Could be an > option > > though. And a text message could be a handy way to send people a link to > > install Google Authenticator or similar apps on their phone. > > > > Backup recovery codes are completely separate from TOTP or U2F. They > are just > > extra one-time use codes. They should be stored securely with a hash and > > removed after use. http://security.stackexchange.com/a/133010 > > > > At a project level (or neighborhood or system) it may be useful to show > who > > doesn't have 2FA enabled (e.g. GitHub does this). There could also be > an option > > to require it. > > > > Thoughts? Suggestions? > > > > > > > > > > -- > Dave Brondsema : d...@brondsema.net > http://www.brondsema.net : personal > http://www.splike.com : programming > <>< > -- Sincerely Rohan Verma he...@rohanverma.net
