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OpenID is a way to use a single set of user credentials to access multiple sites, while OAuth facilitates the authorization of one site to access and use information related to the user's account on another site. Although OAuth is not an authentication protocol, it can be used as part of one.
OAuth is an authorization protocol, rather than an authentication protocol. Using OAuth on its own as an authentication method may be referred to as pseudo-authentication. [26] The following diagrams highlight the differences between using OpenID (specifically designed as an authentication protocol) and OAuth for authorization.
User-Managed Access (UMA) is an OAuth -based access management protocol standard for party-to-party authorization. [1] Version 1.0 of the standard was approved by the Kantara Initiative on March 23, 2015. [2]
Federated identity. A federated identity in information technology is the means of linking a person's electronic identity and attributes, stored across multiple distinct identity management systems. [1] Federated identity is related to single sign-on (SSO), in which a user's single authentication ticket, or token, is trusted across multiple IT ...
Identity providers offer user authentication as a service. Relying party applications, such as web applications, outsource the user authentication step to a trusted identity provider. Such a relying party application is said to be federated, that is, it consumes federated identity .
Relying party. A relying party (RP) is a computer term used to refer to a server providing access to a secured software application. Claims-based applications, where a claim is a statement an entity makes about itself in order to establish access, are also called relying party (RP) applications. RPs can also be called “claims aware ...
SAML-based products and services. Security Assertion Markup Language (SAML) is a set of specifications that encompasses the XML -format for security tokens containing assertions to pass information about a user and protocols and profiles to implement authentication and authorization scenarios.
Authorization or authorisation (see spelling differences) is the function of specifying access rights/privileges to resources, which is related to general information security and computer security, and to access control in particular. [1] More formally, "to authorize" is to define an access policy. For example, human resources staff are ...