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This poses many security risks which can be prevented by the use of OAuth authorization flows. A high-level overview of Oauth 2.0 flow. The resource owner credentials are used only on the authorization server, but not on the client (e.g. the third-party app). OAuth began in November 2006 when Blaine Cook was developing an OpenID implementation ...
In a typical OAuth flow: A resource owner (RO), a human who uses a client application, is redirected to an authorization server (AS) to log in and consent to the issuance of an access token. This access token allows the client application to gain API access to the resource server (RS) on the resource owner's behalf in the future, likely in a ...
OpenID Connect (OIDC) is a simple identity layer on top of the OAuth 2.0 protocol. OIDC enables Clients to verify the identity of the End-User based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the End-User in an interoperable, REST-like manner.
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Identity management (ID management) – or identity and access management (IAM) – is the organizational and technical processes for first registering and authorizing access rights in the configuration phase, and then in the operation phase for identifying, authenticating and controlling individuals or groups of people to have access to applications, systems or networks based on previously ...
The eXtensible Access Control Markup Language (XACML) is an XML-based standard markup language for specifying access control policies. The standard, published by OASIS, defines a declarative fine-grained, attribute-based access control policy language, an architecture, and a processing model describing how to evaluate access requests according to the rules defined in policies.
Front-channel exchanges lead to simple protocol flows where all messages are passed by value using a simple HTTP binding (GET or POST). Indeed, the flow outlined in the previous section is sometimes called the Lightweight Web Browser SSO Profile. Alternatively, for increased security or privacy, messages may be passed by reference.
Example of a single sign-on implementation, Wikimedia Developer (based on Central Authentication Service). Single sign-on (SSO) is an authentication scheme that allows a user to log in with a single SSO ID to any of several related, yet independent, software systems.