w0083024_Assignment3_Technical Report on OpenID

w0083024_Assignment3_Technical Report on OpenID - OpenID A...

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OpenID: A Decentralised Authentication System for User-Centric Identity Management
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Table of Contents Abstract. .................................................................................................................. 3 Introduction. ........................................................................................................... 4 History of OpenID. ................................................................................................. 7 OpenID Login. ........................................................................................................ 9 Observations. ........................................................................................................ 13 Advantages of OpenID. ........................................................................................ 14 Issues. ................................................................................................................... 15 Conclusions. ......................................................................................................... 16
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Abstract OpenID authentication system enables users to login to unlimited number of websites without having to remember separate user-names and passwords for each website. A trusted OpenID provider authenticates the user to a website that supports OpenID logins, when the user tries to login to that website. The only username/password combination that the user has to remember is that of the OpenID provider, who stores and manages the user's identity and profile information. Users identify themselves using their OpenID URL or even just the domain name of the OpenID provider. This paper discusses the history and recent developments in the concepts and adoption of the technology, while proposing usage scenarios in the future.
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Introduction OpenID authentication system simplifies the online experience of logging into multiple websites by eliminating the need for separate user-names and passwords. It is an Open-Source framework for Decentralised Identity Management, which relies on a centralised storage space for the profile information of users. OpenID lets users control the amount of personal information they provide. The centralised store is called an OpenID provider, OP. An OP is a trusted website which stores user data, and helps the user manage multiple identities across numerous websites. OpenID takes advantage of already existing internet technologies such as URI, HTTP, SSL, Diffie-Hellman etc. to implement a secure channel for authorising the user to websites which support OpenID logins, also called a Relying Party (RP). People who go online and use web-based services often already have identities in the form of blogs, photo-streams, profile pages etc., which can be converted into an OpenID account to be used to identify them to RPs. Being a decentralised framework, users are able to change their OP and still have access to their login at all existing RPs. For example, if the OpenID URI of a user is http://blog.example.com/, and uses an OP such as
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This note was uploaded on 09/15/2009 for the course MATHEMATIC CSC8419 taught by Professor Drhuawang during the Summer '08 term at University of Southern Queensland, Ipswich.

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w0083024_Assignment3_Technical Report on OpenID - OpenID A...

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