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OAuth (short for open authorization [1] [2]) is an open standard for access delegation, commonly used as a way for internet users to grant websites or applications access to their information on other websites but without giving them the passwords.
To fetch a service ticket for a particular application, and not prompt the user to enter credentials again, that application must be specifically coded to support Kerberos. This is because pam_krb5 cannot itself get service tickets, although there are versions of PAM-KRB5 that are attempting to work around the issue.
In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic <credentials>, where <credentials> is the Base64 encoding of ID and password joined by a single colon :. It was originally implemented by Ari Luotonen at CERN in 1993 [1] and defined in the HTTP 1.0 specification in 1996. [2]
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WS-Security, WS-Federation, WS-Trust, SAML 1.1 / 2.0, Liberty, Single Sign-on, RBAC, CardSpace, OAuth 2.0, OpenID, STS. Includes out of the box integration with cloud and social media providers (Office 365, Windows Live (MSN), Google, Facebook, Salesforce, Amazon web services and 200+ preconfigured connections to SaaS providers etc ...
The concept of ABAC can be applied at any level of the technology stack and an enterprise infrastructure. For example, ABAC can be used at the firewall, server, application, database, and data layer. The use of attributes bring additional context to evaluate the legitimacy of any request for access and inform the decision to grant or deny access.
Through the collaboration of several OATH members, a TOTP draft was developed in order to create an industry-backed standard. It complements the event-based one-time standard HOTP, and it offers end user organizations and enterprises more choice in selecting technologies that best fit their application requirements and security guidelines.
Oauth 2.0 is a simple protocol. To start, it is necessary to obtain credentials from the Developers Console. Then the client app can request an access Token from the Google Authorization Server, and uses that Token for authorization when accessing a Google API service.