By: Ansuya Chauhan. What is Open ID???. Single Sign-on System Simple to use Uses proven technologies like DNS, HTTP, SSL/TLS and Diffie-Hellman It’s Decentralized It’s Free. History. 2005
The original OpenID authentication protocol was developed in May 2005 by Brad Fitzpatrick, creator of popular community website LiveJournal, while working at Six Apart.
In March 2006, JanRain developed a Simple Registration Extension for OpenID for primitive profile-exchange, and in April submitted a proposal to formalize extensions to OpenID.
On January 31, 2007, computer security company announced support for OpenID in its Identity Initiative products and services.
In mid-January 2008, Yahoo announced initial OpenID 2.0 support, both as a provider and as a relying party, releasing the service by the end of the month. In early February, Google, IBM, Microsoft, VeriSign, and Yahoo! joined the OpenID Foundation as corporate board members.
With OpenId, you get to choose who manages your identity
Modes of Communication
There are two basic methods or modes of communication between the consumer and the identity provider depending upon how consumer is configured.
The check_authentication message
Uses URL as the Identity of User
at different level.
trusted provider through a proxy.
OpenID as future web authentication