Bootcamp

      Simon Willison                            David Recordon
    simonwillison.net                          da...
Who are We?
•   David Recordon

•   VeriSign Employee since
    May of 2006

•   OpenID Foundation Vice-
    Chair

•   Co...
Who are We?
•   Simon Willison

•   Ex-Yahoo!, now freelance

•   “Europe’s first OpenID
    consultant”

•   Co-creator of...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
What is OpenID?
OpenID is a
decentralised mechanism
   for Single Sign On
What problems
does it solve?
“Too many passwords!”
“Someone else already
grabbed my username”
“My online profile is
 scattered across
  dozens of sites”
What is an OpenID?
An OpenID is a URI
http://swillison.livejournal.com/
http://simonw.myopenid.com/
http://openid.aol.com/simonwillison/
http://simonwillison.net/
What can you do
with an OpenID?
You can claim
that you own it
You can prove
  that claim
Why is that useful?
You can use it for
 authentication
“Who the heck are you?!”
                                                                                                 ...
“I’m simonwillison.net”
“prove it!”
                                                                                                              ...
(crypto happens)
“OK, you’re in!”
                                                                                                         ...
So it’s a bit like
Microsoft Passport,
        then?
Yes, at a high level
But you don’t need to ask
Microsoft’s permission to
      implement it
One organisation
 doesn’t get to own
everyone’s credentials
And the standard isn’t
 owned by any one
 company or group
Who does get to
  own them?
You, the user, decide.
You pick your own provider
(just like e-mail)
So I’m still giving
someone the keys
 to my kingdom?
Yes, but it can be
someone you trust
If you have the ability to
  run your own server
 software, you can do it
       for yourself
We'll show you how to
do that a little later on
OK, how do I use it?
So my users don’t
have to sign up for an
      account?
Not necessarily
An OpenID tells you
very little about a user
You don’t know
  their name
You don’t know
their e-mail address
You don’t know if they’re
 a person or a spambot
(or a dog)
Where do I get that
information from?
You ask them!
OpenID augments your
regular sign-up process;
  it doesn't replace it
The simple registration
  extension can help
  users fill out your
   registration form
How can I tell if they’re
  an evil spambot?
Same as usual: challenge
them with a CAPTCHA
botbouncer.com lets
you outsource your
    CAPTCHAs
So how does OpenID
    actually work?
<link rel=quot;openid.serverquot;
 href=quot;http://www.myopenid.com/serverquot; />
“I’m simonwillison.myopenid.com”
Site fetches HTML,
discovers identity provider
Establishes shared secret
 with identity provider
   (Using Diffie-Hellman key exchange)
Redirects you to the
 identity provider
If you’re logged in there,
you get redirected back
How does my identity
provider know who I am?
OpenID deliberately
  doesn’t specify
username/password
    is common
But providers can
use other methods if
    they want to
Client SSL certificates
Out of band
authentication via SMS,
   e-mail or Jabber
IP based login
 restrictions
SecurID keyfobs
The provider’s business
 is authentication: they
 can invest much more
effort than regular sites
It’s also possible for a
  provider to just say
“yes” to every query
Just say “yes”?
http://www.jkg.in/openid/
        does this
Users can give away their
passwords today - this is
 the OpenID equivalent
It's similar to
bugmenot.com
What if I decide I
hate my provider?
Use your own
domain name
Delegate to a
provider you trust
<link rel=quot;openid.serverquot;
 href=quot;http://www.livejournal.com/openid/server.bmlquot;>
<link rel=quot;openid.dele...
This minimises lock in and
 ensures easy portability
So everyone will end up
 with one OpenID that
they use for everything?
Probably not
(I have half a dozen
 OpenIDs already)
People like maintaining
multiple online personas
professional
   social
   secret
     ...
OpenID makes it easier
 to manage multiple
   online personas
Three accounts is still
better than three dozen
Some providers let you
host multiple OpenIDs,
or create a new one for
every site you sign in to
Why is OpenID worth
implementing over all the
 other identity standards?
It’s simple
Unix philosophy:
 It solves one,
 tiny problem
It’s a dumb network
Many of the competing
standards are now on
        board
Isn’t putting all my
eggs in one basket
 a really bad idea?
Bad news: chances are
   you already do
“I forgot my password”
   means your e-mail
 account is already an
    SSO mechanism
OpenID just makes this
 a bit more obvious
What about phishing?
Phishing is a problem
I can has lolcats!?                          BETA


Make your own lolcats! lol
Sign in with your OpenID:
OpenID:          ...
Fake edition
Your identity provider
Username and password, please!
 Username:
 Password:
                         Log in
Identity theft :(
An untrusted site
redirects you to your
  trusted provider
Sound familiar?
PayPal
 Yahoo! BBAuth
  Google Auth
Google Checkout
We'll talk about some
potential solutions later
Doesn’t this outsource the
 security of my users to
 untrusted third parties?
Yes it does. But...
... so do “forgotten
password” e-mails!
If e-mail is secure
enough for your user’s
 authentication, so is
       OpenID
Password e-mails are
essentially SSO with a
 bad user experience
What are the privacy
  implications?
Cross correlation of
     accounts
Don’t publish a user’s
OpenID without making
it clear that you’re going
        to do that
Allow users to opt-out
of sharing their OpenID
The online equivalent of a
 credit reporting agency?
This could be built today
  by sites conspiring to
 share e-mail addresses
IANAL, but legal
protections against this
     already exist
“Directed identity” in
 OpenID 2.0 makes it
easy to use a different
OpenID for every site
Patents?
Sun,VeriSign and JanRain
 have both announced
  “patent covenants”
They won’t smack you
down with their patents
 for using OpenID 1.1
They will smack down
 anyone else who asserts
their own patents against
        OpenID
The OpenID
Foundation is working
  on an IPR Policy
Who else is involved?
~120M OpenIDs
~4200 RPs
AOL - provider, full
consumer very soon
Microsoft: Bill Gates
expressed their interest
 at the RSA conference
(mainly as good PR
 for CardSpace?)
Sun: Patent Covenant,
  33,000 employees
VeriSign
Symantec
37 Signals
Drupal
Plone
Rails
Six Apart
JanRain
...etc
we'll talk about this more
            later
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
Creating an OpenID
pip.VeriSignLabs.com           MyOpenID.com


   ClaimID.com                 FreeYourID.com

http://ope...
Using Your OpenID
                                        Basecamp.com
            Plaxo.com
                          Bli...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
6
           0
 0
~12 million OpenIDs



2                OpenID 1.1 - Estimated from various services
~120 million OpenIDs
    (including every AOL user)




                                 OpenID 1.1 - Estimated from vario...
6
                       Total Relying Parties



                                                                        ...
Total Relying Parties         (aka places you can login with OpenID)




                                                 ...
6
  0
 0
2
History 2005 & 2006
Created by Brad Fitzpatrick (Summer 2005)
Yadis Discovery protocol (Jan 2006)
VeriSign launches OpenID...
History Q1 2007
Mozilla announces intent to support OpenID in FireFox 3 (Jan.)
Microsoft support expressed by Bill Gates a...
History Q2 2007
Plone 3.0 ships with OpenID support (May)
Sun Microsystems adopts OpenID in enterprise product and
provide...
The OpenID Foundation
The purpose of the OpenID Foundation is to
 foster and promote the development and
  adoption of OpenID as a framework for...
Founding board
Scott Kveton            David Recordon
Chair                   Vice-Chair
scott@kveton.com        drecordon...
Current efforts
Develop an IPR policy and process for OpenID
specifications to keep OpenID free and patent
unencumbered
Dev...
OpenID Auth 2.0

• Implementors draft published earlier this
  year
• Already seen multiple implementations in
  PHP, Java...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
Protocol Security

• DNS Security
• Man in the Middle Attacks
• Eavesdropping Attacks
• MAC Key Weakness
• Replay Attacks
...
Phishing

An untrusted site redirects you to
     your trusted provider

    Not just a problem for OpenID, but
    also f...
Passwords Can be Stolen

 • Browsers have poor support for other
   means
 • Users normally ignore browser chrome
 • What ...
Trust
quot;Trust first requires identityquot; - Brad Fitzpatrick


OpenID does not tell you if a user is
    good, bad, or ...
Decoupled Authentication

 • What if the user didn't authenticate at all?
 • How do I know if they met my policies?
 • I n...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
Protocol security
• Use SSL correctly throughout the protocol
 • Protects against man-in-the-middle,
    eavesdropping att...
Trust
quot;Trust first requires identityquot; - Brad Fitzpatrick


• Challenge them via a CAPTCHA or email
   verification
 ...
Decoupled authentication
 • OpenID Provider Authentication Policy
   Extension, draft published June 2006
 • Relying Parti...
Whitelisting Providers
• OpenID doesn't dictate that a RP accept
  every OpenID
• Certainly most do
• Might make sense for...
Vidoop
(changes the metaphor by removing passwords)
DEMO
Client Side SSL Certificates
DEMO
Microsoft CardSpace
(anti-phishing authentication built into the OS)
DEMO
VeriSign's OpenID SeatBelt
(an OpenID convenience and security add-on for Firefox)




                      works with
SeatBelt
• Provide contextual information
 • Am I currently logged in and if so as whom?
 • Is it safe to login?
• Remove ...
DEMO
Provide context
Remove opportunities
Protect
the best solutions will
  be in the browser
Mozilla has said FireFox 3
will include some sort of
  OpenID integration
IE Team has posted a job
ad mentioning quot;OpenIDquot;
 quot;Does the idea of redefining the role of the Internet browser ...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
Simplified account creation
 • The classic OpenID use-case: allow users to
   create a regular account on your system tied
...
Lightweight accounts

• Sometimes you just need persistent cookies
 • Personalisation
 • Preference saving
 • Anything whe...
Simplified OpenID login

• Millions of people have OpenIDs but don’t
  know what OpenID is
• Offer them a sign-in form spec...
Internal SSO
• Restrict your internal applications to only
  accept corporate assigned OpenIDs
• Requires an internal Open...
Portable contact lists
• Re-adding your friends on every social
  network completely sucks
• The Facebook platform shows t...
Contact list options
• FOAF
 • RDF format, exported by LiveJournal
 • Currently adding a new “openid” field
• XFN
 • Microf...
http://daveman692.livejournal.com/data/foaf


   ...
   <foaf:knows>
      <foaf:Person>
       <foaf:nick>bradfitz</foaf:n...
http://gmpg.org/xfn/intro




<ul>
 <li><a href=quot;http://jane-blog.example.org/quot; rel=quot;date metquot;>Jane</a></l...
Pre-approved accounts

• Collaboration apps (private wikis, multi-
  author blogs, Google Docs etc) often let you
  “invit...
Social whitelists
• A potential mechanism for tackling blog
    comment spam
• Create a list of OpenIDs that can skip your...
Group syndication

• A combination of social whitelisting and pre-
  approved accounts
• Syndicate groups as a list of Ope...
jyte.com/api/group/djangonauts/roster
           http://www.jacobian.org/
           http://groovymother.com/
           h...
Provider-specific services
 • OpenIDs from different providers can tell
   you different things about a user
   • An AOL Op...
Identity projection
• A related concept
• OpenID lets you project your identity from
  one service to another
• If you can...
Build a decentralised
   reputation network
• eBay users build up a trusted reputation over
  time
• Imagine if reputation...
Being a consumer
      and a provider
• Not as crazy as you might think
• Letting users sign in with OpenID is a no-
  bra...
Proxies for proprietary
  authentication APIs
• Google,Yahoo! and Facebook all provide
  proprietary authentication APIs
•...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
Detailed protocol flow
associate
• Back-channel between RP and Provider
• Used to establish a shared secret used for
  message signing
• HMAC sty...
checkid_setup

• Front-channel via browser redirects
• Send the user to their Provider with an
  OpenID request
• Provider...
checkid_immediate
• Front-channel via browser redirects
• Send the user to their Provider with an
  OpenID request
• Provi...
check_authentication

• Back-channel between RP and Provider
• Used to verify a signature if there was not an
  existing a...
As a drawing




http://leancode.com   http://www.windley.com
Creating an OpenID with
    your own server
* *************************************************************************** *
 * CONFIGURATION
 * **********************...
* *************************************************************************** *
 * CONFIGURATION
 * **********************...
Configure Profile Data
$profile = array(
     'auth_username'    =>    'david',
     'auth_password'   =>     'e0fee9a99fa2f...
Configure Delegation
                            (source of www.davidrecordon.com)

<html xmlns=quot;http://www.w3.org/1999...
Done!
Time to configure and upload phpMyID:

               ~5 Min

    http://siege.org/projects/phpMyID/
Enabling a Rails app
OpenID enabling iCalico
           http://oscon.icalico.org/

Existing users: Sign in and click the the quot;add
        O...
Tools Used

•   iCalicio by Kellan Elliot-McCrea and Evan
    Henshaw-Plath
•   Ruby and Rails
•   gem install ruby-openid
iCalico User Model
•   Stores login name and hashed password
•   We need to add an optional OpenID column

     1 class Ad...
Now for the best practice
•   Should allow multiple OpenIDs...though is slightly more
    complex
     1 class AddOpenId <...
Using the OpenID Library

    1 def consumer
    2   store_dir = Pathname.new(RAILS_ROOT).join('db').join('openid-store')
...
Add OpenID UI

1 <h2>Or, login with OpenID</h2>
2 <%= start_form_tag(:controller=>'account', :action => 'openid_start') %>...
Handle Login Form Submit
 1 def openid_start
 2   openid_request = consumer.begin(params[:openid_identifier])
 3
 4   case...
Redirect to OpenID Provider
Handle Server Response
 1 def openid_finish
 2   openid_response = consumer.complete(params)
 3
 4   case openid_response....
Done!
Time to implement OpenID in iCalico:
           45 minutes

        http://oscon.icalico.org/
OpenID and Django
django-openid

• http://code.google.com/p/django-openid
• Convenient wrapper around JanRain library
• Currently provides t...
def index(request):
  if request.openid:
      # User is signed in with OpenID
      ...
  else:
      # User is not signe...
Additional features

• Simple registration support
 • request.openid.sreg['email']
• Coming soon...
 • Tie in with django....
Best practices for
OpenID relying parties
• OpenID extends rather than replaces your
  existing user accounts system

• Two key steps:
 • Allow existing users to as...
Existing accounts
• Provide an interface for adding and removing
  OpenIDs from an account
• Don’t let users associate an ...
New accounts
•   Use Simple Registration, if available, to pre-fill fields
    in your registration form

    •   Not all pr...
Simple Registration
• nickname              • postcode
• email                 • country
• fullname              • languag...
The Plan
• Basic concepts of OpenID
• Hands on - Creating and using an OpenID
• Adoption, history, and status
• Security c...
Thanks!
                        http://openid.net/
                     http://planet.openid.net/




      Simon Willison...
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  1. 1. Bootcamp Simon Willison David Recordon simonwillison.net davidrecordon.com simon@simonwillison.net drecordon@verisign.com OSCON July 24th, 2007
  2. 2. Who are We? • David Recordon • VeriSign Employee since May of 2006 • OpenID Foundation Vice- Chair • Co-Author of various OpenID specifications • Past employee of Six Apart, where OpenID was created
  3. 3. Who are We? • Simon Willison • Ex-Yahoo!, now freelance • “Europe’s first OpenID consultant” • Co-creator of the Django Web Framework
  4. 4. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  5. 5. What is OpenID?
  6. 6. OpenID is a decentralised mechanism for Single Sign On
  7. 7. What problems does it solve?
  8. 8. “Too many passwords!”
  9. 9. “Someone else already grabbed my username”
  10. 10. “My online profile is scattered across dozens of sites”
  11. 11. What is an OpenID?
  12. 12. An OpenID is a URI
  13. 13. http://swillison.livejournal.com/
  14. 14. http://simonw.myopenid.com/
  15. 15. http://openid.aol.com/simonwillison/
  16. 16. http://simonwillison.net/
  17. 17. What can you do with an OpenID?
  18. 18. You can claim that you own it
  19. 19. You can prove that claim
  20. 20. Why is that useful?
  21. 21. You can use it for authentication
  22. 22. “Who the heck are you?!” Login? Home | Main Schedule | Map | Mobile | About iCalico | Web 2.0 Expo Search Welcome to ExpoCal! Go Social calendaring for Web 2.0 Expo, April. 15-18, 2007. Build lists of interesting looking sessions, check out what your friends are going to see, or tag surf your way to serependity. My Schedule By Day You need to be logged in to keep a SUNDAY, APRIL 15, MONDAY, APRIL 16, WEDNESDAY, APRIL 18, TUESDAY, APRIL 17, 2007 list of talks and sessions you are 2007 2007 2007 interested in attending. Popular Today Popular Today Popular Today Popular Today quot;Building Social quot;Conference Welcomequot; Tim quot;Mobile 2.0quot; Ajit Jaokar Mike quot;Welcomequot; Tim O'Reilly login | sign up Applicationsquot; Stowe Boyd O'Reilly McCue; Ilkka Raiskinen; quot;Jeff Weiner in Conversation quot;High Performance quot;A Conversation with Jeff Paola Tonelli with John Battellequot; Jeff Webpagesquot; Steve Bezosquot; Jeffrey P. Bezos quot;State of the Web 2.0: Weiner John B... Souders Tenni Theurer quot;Built to Last or Built to Measuring the Participatory quot;Web 2.0 for the Enterprise: Is quot;Ignitequot; Sell: Is There a Difference? Webquot; Bill Tancer It Soup Yet?quot; Dan Farber quot; John Batt... quot;Eric Schmidt in Conversation Satish Dha... Today: All with John Battellequot; Eric Today: All Today: All Schmidt John... Today: All Popular: Tags Popular: Speaker Community Design and User Ajit Jaokar Bill Tancer Brian Mulloy Charlene Ajax Li Dan Farber David Knight Dirk-Willem van Experience Keynotes Marketing Gulik Dmitry Dimov Eric Schmidt Ilkka and Community Strategy and Raiskinen James Baty Jay Adelson Jay Business Models Web 2.0 Bhatti Jeff Weiner Jeffrey P. Bezos Joe Fundamentals Web 2.0 Services John Battelle Kathy Sierra Kelly Kraus and Platforms Web Operations advertising Goto Kerry Fleming Kevin Lynch Luke Sontag business design digitalid django experience Mike McCue Mena Trott Paola Tonelli flickr free google javascript marketing microformats products and services Rich Skrenta Ross Mayfield Satish openid php Dharmaraj Subrah Iyar Tim O'Reilly rails search skypejournal social syndication all tags yahoo everybody! Random People ChrisC1971 alexiskold atomsplitter billvision brady emccm Everything! gervasio goodsboy gustav heinika hienhuynh hotwheel http://jalanoly.pip.verisignlabs.com/ Find: all talks, the all speakers, all tags, or users. http://suleyman.pip.verisignlabs.com/ http://vishnu.myopenid.com/ jessie jggaines leeclw maisany markgoines nborwankar pbuder philip ron_topright shameer shua slevine timknight tomas wilsonminer
  23. 23. “I’m simonwillison.net”
  24. 24. “prove it!” Login? Home | Main Schedule | Map | Mobile | About iCalico | Web 2.0 Expo Search Welcome to ExpoCal! Go Social calendaring for Web 2.0 Expo, April. 15-18, 2007. Build lists of interesting looking sessions, check out what your friends are going to see, or tag surf your way to serependity. My Schedule By Day You need to be logged in to keep a SUNDAY, APRIL 15, MONDAY, APRIL 16, WEDNESDAY, APRIL 18, TUESDAY, APRIL 17, 2007 list of talks and sessions you are 2007 2007 2007 interested in attending. Popular Today Popular Today Popular Today Popular Today quot;Building Social quot;Conference Welcomequot; Tim quot;Mobile 2.0quot; Ajit Jaokar Mike quot;Welcomequot; Tim O'Reilly login | sign up Applicationsquot; Stowe Boyd O'Reilly McCue; Ilkka Raiskinen; quot;Jeff Weiner in Conversation quot;High Performance quot;A Conversation with Jeff Paola Tonelli with John Battellequot; Jeff Webpagesquot; Steve Bezosquot; Jeffrey P. Bezos quot;State of the Web 2.0: Weiner John B... Souders Tenni Theurer quot;Built to Last or Built to Measuring the Participatory quot;Web 2.0 for the Enterprise: Is quot;Ignitequot; Sell: Is There a Difference? Webquot; Bill Tancer It Soup Yet?quot; Dan Farber quot; John Batt... quot;Eric Schmidt in Conversation Satish Dha... Today: All with John Battellequot; Eric Today: All Today: All Schmidt John... Today: All Popular: Tags Popular: Speaker Community Design and User Ajit Jaokar Bill Tancer Brian Mulloy Charlene Ajax Li Dan Farber David Knight Dirk-Willem van Experience Keynotes Marketing Gulik Dmitry Dimov Eric Schmidt Ilkka and Community Strategy and Raiskinen James Baty Jay Adelson Jay Business Models Web 2.0 Bhatti Jeff Weiner Jeffrey P. Bezos Joe Fundamentals Web 2.0 Services John Battelle Kathy Sierra Kelly Kraus and Platforms Web Operations advertising Goto Kerry Fleming Kevin Lynch Luke Sontag business design digitalid django experience Mike McCue Mena Trott Paola Tonelli flickr free google javascript marketing microformats products and services Rich Skrenta Ross Mayfield Satish openid php Dharmaraj Subrah Iyar Tim O'Reilly rails search skypejournal social syndication all tags yahoo everybody! Random People ChrisC1971 alexiskold atomsplitter billvision brady emccm Everything! gervasio goodsboy gustav heinika hienhuynh hotwheel http://jalanoly.pip.verisignlabs.com/ Find: all talks, the all speakers, all tags, or users. http://suleyman.pip.verisignlabs.com/ http://vishnu.myopenid.com/ jessie jggaines leeclw maisany markgoines nborwankar pbuder philip ron_topright shameer shua slevine timknight tomas wilsonminer
  25. 25. (crypto happens)
  26. 26. “OK, you’re in!” Login? Home | Main Schedule | Map | Mobile | About iCalico | Web 2.0 Expo Search Welcome to ExpoCal! Go Social calendaring for Web 2.0 Expo, April. 15-18, 2007. Build lists of interesting looking sessions, check out what your friends are going to see, or tag surf your way to serependity. My Schedule By Day You need to be logged in to keep a SUNDAY, APRIL 15, MONDAY, APRIL 16, WEDNESDAY, APRIL 18, TUESDAY, APRIL 17, 2007 list of talks and sessions you are 2007 2007 2007 interested in attending. Popular Today Popular Today Popular Today Popular Today quot;Building Social quot;Conference Welcomequot; Tim quot;Mobile 2.0quot; Ajit Jaokar Mike quot;Welcomequot; Tim O'Reilly login | sign up Applicationsquot; Stowe Boyd O'Reilly McCue; Ilkka Raiskinen; quot;Jeff Weiner in Conversation quot;High Performance quot;A Conversation with Jeff Paola Tonelli with John Battellequot; Jeff Webpagesquot; Steve Bezosquot; Jeffrey P. Bezos quot;State of the Web 2.0: Weiner John B... Souders Tenni Theurer quot;Built to Last or Built to Measuring the Participatory quot;Web 2.0 for the Enterprise: Is quot;Ignitequot; Sell: Is There a Difference? Webquot; Bill Tancer It Soup Yet?quot; Dan Farber quot; John Batt... quot;Eric Schmidt in Conversation Satish Dha... Today: All with John Battellequot; Eric Today: All Today: All Schmidt John... Today: All Popular: Tags Popular: Speaker Community Design and User Ajit Jaokar Bill Tancer Brian Mulloy Charlene Ajax Li Dan Farber David Knight Dirk-Willem van Experience Keynotes Marketing Gulik Dmitry Dimov Eric Schmidt Ilkka and Community Strategy and Raiskinen James Baty Jay Adelson Jay Business Models Web 2.0 Bhatti Jeff Weiner Jeffrey P. Bezos Joe Fundamentals Web 2.0 Services John Battelle Kathy Sierra Kelly Kraus and Platforms Web Operations advertising Goto Kerry Fleming Kevin Lynch Luke Sontag business design digitalid django experience Mike McCue Mena Trott Paola Tonelli flickr free google javascript marketing microformats products and services Rich Skrenta Ross Mayfield Satish openid php Dharmaraj Subrah Iyar Tim O'Reilly rails search skypejournal social syndication all tags yahoo everybody! Random People ChrisC1971 alexiskold atomsplitter billvision brady emccm Everything! gervasio goodsboy gustav heinika hienhuynh hotwheel http://jalanoly.pip.verisignlabs.com/ Find: all talks, the all speakers, all tags, or users. http://suleyman.pip.verisignlabs.com/ http://vishnu.myopenid.com/ jessie jggaines leeclw maisany markgoines nborwankar pbuder philip ron_topright shameer shua slevine timknight tomas wilsonminer
  27. 27. So it’s a bit like Microsoft Passport, then?
  28. 28. Yes, at a high level
  29. 29. But you don’t need to ask Microsoft’s permission to implement it
  30. 30. One organisation doesn’t get to own everyone’s credentials
  31. 31. And the standard isn’t owned by any one company or group
  32. 32. Who does get to own them?
  33. 33. You, the user, decide.
  34. 34. You pick your own provider
  35. 35. (just like e-mail)
  36. 36. So I’m still giving someone the keys to my kingdom?
  37. 37. Yes, but it can be someone you trust
  38. 38. If you have the ability to run your own server software, you can do it for yourself
  39. 39. We'll show you how to do that a little later on
  40. 40. OK, how do I use it?
  41. 41. So my users don’t have to sign up for an account?
  42. 42. Not necessarily
  43. 43. An OpenID tells you very little about a user
  44. 44. You don’t know their name
  45. 45. You don’t know their e-mail address
  46. 46. You don’t know if they’re a person or a spambot
  47. 47. (or a dog)
  48. 48. Where do I get that information from?
  49. 49. You ask them!
  50. 50. OpenID augments your regular sign-up process; it doesn't replace it
  51. 51. The simple registration extension can help users fill out your registration form
  52. 52. How can I tell if they’re an evil spambot?
  53. 53. Same as usual: challenge them with a CAPTCHA
  54. 54. botbouncer.com lets you outsource your CAPTCHAs
  55. 55. So how does OpenID actually work?
  56. 56. <link rel=quot;openid.serverquot; href=quot;http://www.myopenid.com/serverquot; />
  57. 57. “I’m simonwillison.myopenid.com”
  58. 58. Site fetches HTML, discovers identity provider
  59. 59. Establishes shared secret with identity provider (Using Diffie-Hellman key exchange)
  60. 60. Redirects you to the identity provider
  61. 61. If you’re logged in there, you get redirected back
  62. 62. How does my identity provider know who I am?
  63. 63. OpenID deliberately doesn’t specify
  64. 64. username/password is common
  65. 65. But providers can use other methods if they want to
  66. 66. Client SSL certificates
  67. 67. Out of band authentication via SMS, e-mail or Jabber
  68. 68. IP based login restrictions
  69. 69. SecurID keyfobs
  70. 70. The provider’s business is authentication: they can invest much more effort than regular sites
  71. 71. It’s also possible for a provider to just say “yes” to every query
  72. 72. Just say “yes”?
  73. 73. http://www.jkg.in/openid/ does this
  74. 74. Users can give away their passwords today - this is the OpenID equivalent
  75. 75. It's similar to bugmenot.com
  76. 76. What if I decide I hate my provider?
  77. 77. Use your own domain name
  78. 78. Delegate to a provider you trust
  79. 79. <link rel=quot;openid.serverquot; href=quot;http://www.livejournal.com/openid/server.bmlquot;> <link rel=quot;openid.delegatequot; href=quot;http://swillison.livejournal.com/quot;>
  80. 80. This minimises lock in and ensures easy portability
  81. 81. So everyone will end up with one OpenID that they use for everything?
  82. 82. Probably not
  83. 83. (I have half a dozen OpenIDs already)
  84. 84. People like maintaining multiple online personas
  85. 85. professional social secret ...
  86. 86. OpenID makes it easier to manage multiple online personas
  87. 87. Three accounts is still better than three dozen
  88. 88. Some providers let you host multiple OpenIDs, or create a new one for every site you sign in to
  89. 89. Why is OpenID worth implementing over all the other identity standards?
  90. 90. It’s simple
  91. 91. Unix philosophy: It solves one, tiny problem
  92. 92. It’s a dumb network
  93. 93. Many of the competing standards are now on board
  94. 94. Isn’t putting all my eggs in one basket a really bad idea?
  95. 95. Bad news: chances are you already do
  96. 96. “I forgot my password” means your e-mail account is already an SSO mechanism
  97. 97. OpenID just makes this a bit more obvious
  98. 98. What about phishing?
  99. 99. Phishing is a problem
  100. 100. I can has lolcats!? BETA Make your own lolcats! lol Sign in with your OpenID: OpenID: Sign in http://icanhascheezburger.com/2007/05/16/i-has-a-backpack/
  101. 101. Fake edition Your identity provider Username and password, please! Username: Password: Log in
  102. 102. Identity theft :(
  103. 103. An untrusted site redirects you to your trusted provider
  104. 104. Sound familiar?
  105. 105. PayPal Yahoo! BBAuth Google Auth Google Checkout
  106. 106. We'll talk about some potential solutions later
  107. 107. Doesn’t this outsource the security of my users to untrusted third parties?
  108. 108. Yes it does. But...
  109. 109. ... so do “forgotten password” e-mails!
  110. 110. If e-mail is secure enough for your user’s authentication, so is OpenID
  111. 111. Password e-mails are essentially SSO with a bad user experience
  112. 112. What are the privacy implications?
  113. 113. Cross correlation of accounts
  114. 114. Don’t publish a user’s OpenID without making it clear that you’re going to do that
  115. 115. Allow users to opt-out of sharing their OpenID
  116. 116. The online equivalent of a credit reporting agency?
  117. 117. This could be built today by sites conspiring to share e-mail addresses
  118. 118. IANAL, but legal protections against this already exist
  119. 119. “Directed identity” in OpenID 2.0 makes it easy to use a different OpenID for every site
  120. 120. Patents?
  121. 121. Sun,VeriSign and JanRain have both announced “patent covenants”
  122. 122. They won’t smack you down with their patents for using OpenID 1.1
  123. 123. They will smack down anyone else who asserts their own patents against OpenID
  124. 124. The OpenID Foundation is working on an IPR Policy
  125. 125. Who else is involved?
  126. 126. ~120M OpenIDs
  127. 127. ~4200 RPs
  128. 128. AOL - provider, full consumer very soon
  129. 129. Microsoft: Bill Gates expressed their interest at the RSA conference
  130. 130. (mainly as good PR for CardSpace?)
  131. 131. Sun: Patent Covenant, 33,000 employees
  132. 132. VeriSign
  133. 133. Symantec
  134. 134. 37 Signals
  135. 135. Drupal
  136. 136. Plone
  137. 137. Rails
  138. 138. Six Apart
  139. 139. JanRain
  140. 140. ...etc we'll talk about this more later
  141. 141. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  142. 142. Creating an OpenID pip.VeriSignLabs.com MyOpenID.com ClaimID.com FreeYourID.com http://openid.net/wiki/index.php/OpenIDServers and you may already have one
  143. 143. Using Your OpenID Basecamp.com Plaxo.com Blinksale.com Toodledo.com Wikispaces.com WikiTravel.com Ma.gnolia.com Jyte.com HighRiseHQ.com WetPaint.com http://intertwingly.net/blog/2007/01/03/OpenID-for-non-SuperUsers
  144. 144. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  145. 145. 6 0 0 ~12 million OpenIDs 2 OpenID 1.1 - Estimated from various services
  146. 146. ~120 million OpenIDs (including every AOL user) OpenID 1.1 - Estimated from various services
  147. 147. 6 Total Relying Parties 0 (aka places you can login with OpenID) 0 y nt ou /B p i Sx 4,500 2 3,375 2,250 1,125 0 '05 ct ov ec '06 b ar r ay e ly g Ap Au n Fe Ju O M M D N Ju p Jan Se OpenID 1.1 - As viewed by MyOpenID.com
  148. 148. Total Relying Parties (aka places you can login with OpenID) po L AO y Ex nt ou 0 & 2. /B T SF eb p M W i Sx 4,500 3,375 2,250 1,125 0 '05 ct ov ec '06 b ar r ay e ly g p ct ov ec '07 b ar r ay e 22 Ap Ap Au n n Fe Se Fe Ju O O M M M M D D N Ju N Ju ly p Jan Jan Ju Se OpenID 1.1 - As viewed by MyOpenID.com
  149. 149. 6 0 0 2
  150. 150. History 2005 & 2006 Created by Brad Fitzpatrick (Summer 2005) Yadis Discovery protocol (Jan 2006) VeriSign launches OpenID Provider (May) Convergence with i-names (July) Convergence with Sxip (Aug.) $50,000 USD Developer Bounty (Aug.) Technorati adopts OpenID (Oct.) Tutorials by Simon Willison (Dec.)
  151. 151. History Q1 2007 Mozilla announces intent to support OpenID in FireFox 3 (Jan.) Microsoft support expressed by Bill Gates and Craig Mundie at RSA Conference keynote (Feb.) AOL add OpenID to every one of their ~60M accounts (Feb.) Symantec announces upcoming OpenID products (Feb.) Digg and NetVibes announce OpenID support (Feb.) Wordpress.com and 37Signals adopt OpenID (March) USA Today publishes OpenID article on the Money section front-page (March)
  152. 152. History Q2 2007 Plone 3.0 ships with OpenID support (May) Sun Microsystems adopts OpenID in enterprise product and provides employees with OpenID (May) livedoor adds OpenID support (May) OpenID wins Next Web Award (June) Leo Laporte and Steve Gibson discuss OpenID (June) OpenID wins CNET Webware 100 award (June) Atlassian (makers of enterprise wiki software) supports OpenID (June) Drupal 6 ships with OpenID support (June)
  153. 153. The OpenID Foundation
  154. 154. The purpose of the OpenID Foundation is to foster and promote the development and adoption of OpenID as a framework for user-centric identity on the Internet.
  155. 155. Founding board Scott Kveton David Recordon Chair Vice-Chair scott@kveton.com drecordon@verisign.com Dick Hardt Martin Atkins Treasurer Secretary dick@sxip.com mart@degeneration.co.uk Johannes Ernst Drummond Reed jernst@netmesh.us drummond.reed@cordance.net Bill Washburn Artur Bergman Executive Director sky@crucially.net bill@oidf.org
  156. 156. Current efforts Develop an IPR policy and process for OpenID specifications to keep OpenID free and patent unencumbered Develop a trademark policy that supports the extended OpenID community Develop core messaging for OpenID and websites oriented toward developers, users, and other potential adopters Coordinate World-wide joint marketing and evangelism
  157. 157. OpenID Auth 2.0 • Implementors draft published earlier this year • Already seen multiple implementations in PHP, Java, Perl, and Python • Concerns raised from service providers the size of AOL, LiveDoor,Yahoo! around identifier recycling • Still really close to a final specification
  158. 158. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  159. 159. Protocol Security • DNS Security • Man in the Middle Attacks • Eavesdropping Attacks • MAC Key Weakness • Replay Attacks Don't Panic
  160. 160. Phishing An untrusted site redirects you to your trusted provider Not just a problem for OpenID, but also for PayPal, Google Auth and Checkout, Yahoo! BBAuth, AOL OpenAuth
  161. 161. Passwords Can be Stolen • Browsers have poor support for other means • Users normally ignore browser chrome • What extent are they willing to go? • quot;Gang Kidnaps Gamer to Get Password Using Fake Orkut Datequot;
  162. 162. Trust quot;Trust first requires identityquot; - Brad Fitzpatrick OpenID does not tell you if a user is good, bad, or even human • What if I've never seen the user before? • What if I know nothing about the OpenID Provider?
  163. 163. Decoupled Authentication • What if the user didn't authenticate at all? • How do I know if they met my policies? • I need strong authentication! • The user must authenticate within the past five minutes!
  164. 164. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  165. 165. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  166. 166. Protocol security • Use SSL correctly throughout the protocol • Protects against man-in-the-middle, eavesdropping attacks, and DNS attacks • Generate strong MAC keys and re-negotiate as needed • Used to verify data integrity and authenticity of OpenID responses • Verify NONCEs • Protects against replay attacks
  167. 167. Trust quot;Trust first requires identityquot; - Brad Fitzpatrick • Challenge them via a CAPTCHA or email verification • Even a distributed CAPTCHA • Use whitelists and blacklists • Ask someone else whom you trust
  168. 168. Decoupled authentication • OpenID Provider Authentication Policy Extension, draft published June 2006 • Relying Parties can ask for authentication policies such as quot;phishing resistantquot; or quot;multi-factorquot; • Providers can respond with policies the user complied with, time since they authenticated, and strength of the credential (s) used per NIST guidelines • Still has the question of quot;trustquot;
  169. 169. Whitelisting Providers • OpenID doesn't dictate that a RP accept every OpenID • Certainly most do • Might make sense for a bank to whitelist • Others sites by whitelisting will only hurt themselves by cutting down the number of users who can sign in • With Yadis Discovery, a user can list multiple providers and a RP can choose which to use
  170. 170. Vidoop (changes the metaphor by removing passwords)
  171. 171. DEMO
  172. 172. Client Side SSL Certificates
  173. 173. DEMO
  174. 174. Microsoft CardSpace (anti-phishing authentication built into the OS)
  175. 175. DEMO
  176. 176. VeriSign's OpenID SeatBelt (an OpenID convenience and security add-on for Firefox) works with
  177. 177. SeatBelt • Provide contextual information • Am I currently logged in and if so as whom? • Is it safe to login? • Remove phishing opportunities • Login when my browser opens • Take me to my Provider if I'm not logged in • Protect against common attacks • Validate SSL certificates when interacting with my Provider
  178. 178. DEMO
  179. 179. Provide context
  180. 180. Remove opportunities
  181. 181. Protect
  182. 182. the best solutions will be in the browser
  183. 183. Mozilla has said FireFox 3 will include some sort of OpenID integration
  184. 184. IE Team has posted a job ad mentioning quot;OpenIDquot; quot;Does the idea of redefining the role of the Internet browser appeal to you? Do the terms HTTP, RSS, Microformats, and OpenID, excite you? If so, then this just might be the opportunity for you.quot;
  185. 185. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  186. 186. Simplified account creation • The classic OpenID use-case: allow users to create a regular account on your system tied to their OpenID • Use Simple Registration to pre-fill the signup form • Let users associate one or more OpenIDs with an existing account
  187. 187. Lightweight accounts • Sometimes you just need persistent cookies • Personalisation • Preference saving • Anything where users can’t spam you • http://oscon07.icalico.org/ is a nice example
  188. 188. Simplified OpenID login • Millions of people have OpenIDs but don’t know what OpenID is • Offer them a sign-in form specific to their provider • Construct the OpenID behind the scenes
  189. 189. Internal SSO • Restrict your internal applications to only accept corporate assigned OpenIDs • Requires an internal OpenID server • Wikis, bug trackers, blog engines... • Applications need to be able to whitelist OpenIDs that match a certain pattern • http://(w+).internal.example.com/
  190. 190. Portable contact lists • Re-adding your friends on every social network completely sucks • The Facebook platform shows the importance of being able to build even trivial applications on top of an existing network • An OpenID is globally unique; it’s the ideal hook for building a reusable friend list
  191. 191. Contact list options • FOAF • RDF format, exported by LiveJournal • Currently adding a new “openid” field • XFN • Microformat for listing relationships • Can be embedded directly in HTML
  192. 192. http://daveman692.livejournal.com/data/foaf ... <foaf:knows> <foaf:Person> <foaf:nick>bradfitz</foaf:nick> <foaf:member_name>Brad Fitzpatrick</foaf:member_name> <foaf:tagLine></foaf:tagLine> <foaf:image>http://userpic.livejournal.com/21628/1</foaf:image> <rdfs:seeAlso rdf:resource=quot;http://bradfitz.livejournal.com/data/foafquot; /> <foaf:weblog rdf:resource=quot;http://bradfitz.livejournal.com/quot;/> </foaf:Person> </foaf:knows> ...
  193. 193. http://gmpg.org/xfn/intro <ul> <li><a href=quot;http://jane-blog.example.org/quot; rel=quot;date metquot;>Jane</a></li> <li><a href=quot;http://dave-blog.example.org/quot; rel=quot;friend metquot;>Dave</a></li> <li><a href=quot;http://darryl-blog.example.org/quot; rel=quot;friend metquot;>Darryl</a></li> </ul>
  194. 194. Pre-approved accounts • Collaboration apps (private wikis, multi- author blogs, Google Docs etc) often let you “invite” new members to your project • With OpenID, you can pre-approve their ability to log in without needing to create them a username and password
  195. 195. Social whitelists • A potential mechanism for tackling blog comment spam • Create a list of OpenIDs that can skip your spam filter • Share that list with your friends • Allow people on their lists to skip your spam filters as well • http://simonwillison.net/2007/Jan/22/whitelisting/
  196. 196. Group syndication • A combination of social whitelisting and pre- approved accounts • Syndicate groups as a list of OpenIDs • www.jyte.com does this • Tell another application that “anyone who is a member of that group can sign in”
  197. 197. jyte.com/api/group/djangonauts/roster http://www.jacobian.org/ http://groovymother.com/ http://rodbegbie.sxipper.com/ http://cygnus.myopenid.com/ http://www.b-tree.org/ http://root.b-tree.org/ http://jlam.idproxy.net/ http://claimid.com/jlam http://openid.aol.com/jlameudaemon http://jlam.vox.com/ http://jlam.livejournal.com/ http://adamh.openid.pl/ http://robhudson.myopenid.com/ http://recombiant.com/public/yadis.xrdf http://bradpitcher.livejournal.com/ http://kristate.myopenid.com/ http://michele.campeotto.net/ http://mderk.livejournal.com/ http://meangrape.myopenid.com/ http://telenieko.com/ http://eas.myopenid.com/ http://geekfun.livejournal.com/ http://www.pauladamsmith.com/ http://teknico.myopenid.com/ http://adamendicott.com/ http://simonwillison.net/ http://azuer88.myopenid.com/ http://lightlan.myopenid.com/
  198. 198. Provider-specific services • OpenIDs from different providers can tell you different things about a user • An AOL OpenID “proves” their IM details • A LiveJournal OpenID lets you discover their RSS, FOAF and LJ Jabber account • A last.fm OpenID could indicate their taste in music • Another reason to allow multiple OpenIDs to be associated with a single account
  199. 199. Identity projection • A related concept • OpenID lets you project your identity from one service to another • If you can prove to site X that you are a user of site Y, what new things can you build? • Lots of opportunities for interesting mashups here
  200. 200. Build a decentralised reputation network • eBay users build up a trusted reputation over time • Imagine if reputation could be tied to an OpenID, and aggregated by crawlers • This wouldn’t punish the bad guys (who would just get a new OpenID), but it would reward the good guys • Jyte lets you vote on claims about OpenIDs
  201. 201. Being a consumer and a provider • Not as crazy as you might think • Letting users sign in with OpenID is a no- brainer • Providing OpenID as a way of proving ownership of a profile page is also useful • You could even automatically delegate to the OpenID that they used to sign in
  202. 202. Proxies for proprietary authentication APIs • Google,Yahoo! and Facebook all provide proprietary authentication APIs • If they're supporting an authentication API, why don't they just support OpenID? • You can set yourself up as a proxy between their protocol and OpenID
  203. 203. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  204. 204. Detailed protocol flow
  205. 205. associate • Back-channel between RP and Provider • Used to establish a shared secret used for message signing • HMAC style key calculated with SHA1 or SHA256 • Can use Diffie-Hellman or be in the clear if using SSL
  206. 206. checkid_setup • Front-channel via browser redirects • Send the user to their Provider with an OpenID request • Provider authenticates and prompts user • Responds with a quot;yesquot; or quot;cancelquot;
  207. 207. checkid_immediate • Front-channel via browser redirects • Send the user to their Provider with an OpenID request • Provider immediately responds with a quot;yesquot; or quot;noquot; • Good for AJAX type setups or quot;single logoutquot;
  208. 208. check_authentication • Back-channel between RP and Provider • Used to verify a signature if there was not an existing association • Also used to verify a signature if the Provider told the RP to invalidate the existing association
  209. 209. As a drawing http://leancode.com http://www.windley.com
  210. 210. Creating an OpenID with your own server
  211. 211. * *************************************************************************** * * CONFIGURATION * *************************************************************************** * * You must change these values: * auth_username = login name * auth_password = md5(username:realm:password) * * Default username = 'test', password = 'test', realm = 'phpMyID' */ #$profile = array( # 'auth_username' => 'test', # 'auth_password' => '37fa04faebe5249023ed1f6cc867329b' #); /* * Optional - Simple Registration Extension: * * If you would like to add any of the following optional registration * parameters to your login profile, simply uncomment the line, and enter the * correct values. * * Details on the exact allowed values for these paramters can be found at: * http://openid.net/specs/openid-simple-registration-extension-1_0.html */ #$sreg = array ( # 'nickname' => 'Joe', # 'email' => 'joe@example.com', # 'fullname' => 'Joe Example', # 'dob' => '1970-10-31', # 'gender' => 'M', # 'postcode' => '22000', # 'country' => 'US', # 'language' => 'en', # 'timezone' => 'America/New_York' #);
  212. 212. * *************************************************************************** * * CONFIGURATION * *************************************************************************** * * You must change these values: * auth_username = login name * auth_password = md5(username:realm:password) * * Default username = 'test', password = 'test', realm = 'phpMyID' */ $profile = array( 'auth_username' => 'david', 'auth_password' => 'e0fee9a99fa2fe004bbd70b972a03aa1' ); /* * Optional - Simple Registration Extension: * * If you would like to add any of the following optional registration * parameters to your login profile, simply uncomment the line, and enter the * correct values. * * Details on the exact allowed values for these paramters can be found at: * http://openid.net/specs/openid-simple-registration-extension-1_0.html */ #$sreg = array ( # 'nickname' => 'Joe', # 'email' => 'joe@example.com', # 'fullname' => 'Joe Example', # 'dob' => '1970-10-31', # 'gender' => 'M', # 'postcode' => '22000', # 'country' => 'US', # 'language' => 'en', # 'timezone' => 'America/New_York' #);
  213. 213. Configure Profile Data $profile = array( 'auth_username' => 'david', 'auth_password' => 'e0fee9a99fa2fe004bbd70b972a03aa1' ); /* * Optional - Simple Registration Extension: * * If you would like to add any of the following optional registration * parameters to your login profile, simply uncomment the line, and enter the * correct values. * * Details on the exact allowed values for these paramters can be found at: * http://openid.net/specs/openid-simple-registration-extension-1_0.html */ $sreg = array ( 'nickname' => 'daveman692', 'email' => 'recordond@gmail.com', 'fullname' => 'David Recordon', 'dob' => '1986-09-04', 'gender' => 'M', 'postcode' => '941458', 'country' => 'US', 'language' => 'en', 'timezone' => 'America/Los_Angeles' );
  214. 214. Configure Delegation (source of www.davidrecordon.com) <html xmlns=quot;http://www.w3.org/1999/xhtmlquot;> <head> <title>David Recordon</title> <style> div { text-align: center; color: #C0C0C0; } img { border: 0px; } a { color: #C0C0C0; } </style> <link rel=quot;openid.serverquot; href=quot;http://www.davidrecordon.com/myid.phpquot; /> <link rel=quot;openid.delegatequot; href=quot;http://www.davidrecordon.com/myid.phpquot; /> </head>
  215. 215. Done! Time to configure and upload phpMyID: ~5 Min http://siege.org/projects/phpMyID/
  216. 216. Enabling a Rails app
  217. 217. OpenID enabling iCalico http://oscon.icalico.org/ Existing users: Sign in and click the the quot;add OpenIDquot; link at the top right New users: Click quot;loginquot; and sign in with your OpenID, skipping the signup process :) Thanks Brian Ellin of JanRain
  218. 218. Tools Used • iCalicio by Kellan Elliot-McCrea and Evan Henshaw-Plath • Ruby and Rails • gem install ruby-openid
  219. 219. iCalico User Model • Stores login name and hashed password • We need to add an optional OpenID column 1 class AddOpenId < ActiveRecord::Migration 2 def self.up 3 add_column :users, :openid, :string 4 add_index :users, [:openid], :name => :users_openid_index 5 end 6 7 def self.down 8 remove_column :users, :openid 9 end 10 end
  220. 220. Now for the best practice • Should allow multiple OpenIDs...though is slightly more complex 1 class AddOpenId < ActiveRecord::Migration 2 def self.up 3 create_table :openids do |t| 4 t.column :identifier, :string 5 t.column :user_id, :int 6 end 7 end 8 9 def self.down 10 drop_table :openids 11 end 12 end 1 class User < ActiveRecord::Base 2 has_many :openids 3 end
  221. 221. Using the OpenID Library 1 def consumer 2 store_dir = Pathname.new(RAILS_ROOT).join('db').join('openid-store') 3 store = OpenID::FilesystemStore.new(store_dir) 4 return OpenID::Consumer.new(session, store) 5 end • FilesystemStore saved OpenID transaction state • OpenID::Consumer handles the protocol details
  222. 222. Add OpenID UI 1 <h2>Or, login with OpenID</h2> 2 <%= start_form_tag(:controller=>'account', :action => 'openid_start') %> 3 <p><label for=quot;openid_identifierquot;>OpenID</label><br/> 4 <%= text_field_tag 'openid_identifier' %></p> 5 <%= submit_tag 'OpenID Login' %> 6 <%= end_form_tag %> <input name=quot;openid_identiferquot; />
  223. 223. Handle Login Form Submit 1 def openid_start 2 openid_request = consumer.begin(params[:openid_identifier]) 3 4 case openid_request.status 5 when OpenID::SUCCESS 6 return_to = url_for(:action => 'openid_finish') 7 trust_root = url_for(:controller => '') 8 server_redirect_url = openid_request.redirect_url(trust_root, return_to) 9 redirect_to(server_redirect_url) 10 11 when OpenID::FAILURE 12 flash[:notice] = quot;Could not find your OpenID server.quot; 13 redirect_back_or_default(:controller => '/account', :action => 'index') 14 15 end 16 end 1. Discover 2. Associate 3. Redirect (we’ll handle the server response at the return_to URL)
  224. 224. Redirect to OpenID Provider
  225. 225. Handle Server Response 1 def openid_finish 2 openid_response = consumer.complete(params) 3 4 case openid_response.status 5 when OpenID::SUCCESS 6 openid = openid_response.identity_url 7 @user = User.find_by_openid(openid) 8 9 unless @user 10 @user = User.create(:openid => openid, :login => openid) 11 end 12 self.current_user = @user 13 flash[:notice] = quot;Welcome #{@user.openid}quot; 14 15 when OpenID::FAILURE 16 flash[:notice] = 'Verification failed.' 17 end 18 19 redirect_back_or_default(:controller => 'talk', :action => 'list') 20 end
  226. 226. Done! Time to implement OpenID in iCalico: 45 minutes http://oscon.icalico.org/
  227. 227. OpenID and Django
  228. 228. django-openid • http://code.google.com/p/django-openid • Convenient wrapper around JanRain library • Currently provides tools for consuming OpenID
  229. 229. def index(request): if request.openid: # User is signed in with OpenID ... else: # User is not signed in return HttpResponseRedirect('/openidlogin/') request.openid = most recently signed in OpenID request.openids = ALL signed in OpenIDs
  230. 230. Additional features • Simple registration support • request.openid.sreg['email'] • Coming soon... • Tie in with django.contrib.auth.User • Easy creation of an OpenID provider
  231. 231. Best practices for OpenID relying parties
  232. 232. • OpenID extends rather than replaces your existing user accounts system • Two key steps: • Allow existing users to associate one or more OpenIDs with their account • Allow new users to sign up using an OpenID to jump-start the process
  233. 233. Existing accounts • Provide an interface for adding and removing OpenIDs from an account • Don’t let users associate an OpenID without first authenticating it • Don’t let users delete the last OpenID associated with their account without having a password set (or they’ll lock themselves out)
  234. 234. New accounts • Use Simple Registration, if available, to pre-fill fields in your registration form • Not all providers support Simple Registration • Don’t assume that e-mail addresses etc from Simple Registration are accurate - you may still want to send a verification e-mail • Don’t assume the user is a human being - challenge with a CAPTCHA or use botbouncer.com
  235. 235. Simple Registration • nickname • postcode • email • country • fullname • language • dob • timezone • gender Some providers (or users) may provide just a subset of this information
  236. 236. The Plan • Basic concepts of OpenID • Hands on - Creating and using an OpenID • Adoption, history, and status • Security concerns • Break • Security solutions • Clever and creative hacks • OpenID in code • Q&A
  237. 237. Thanks! http://openid.net/ http://planet.openid.net/ Simon Willison David Recordon simonwillison.net davidrecordon.com simon@simonwillison.net drecordon@verisign.com OSCON July 24th, 2007

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