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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.
A Policy can contain Rule elements. A Rule contains a decision (either Permit or Deny). In addition, in ALFA, it's possible to add Rule elements to PolicySet and Policy elements. PolicySet, Policy, and Rule elements can be nested or referenced to. In order to resolve conflicts between siblings, ALFA (as does XACML) uses combining algorithms.
Attribute-based access control is sometimes referred to as policy-based access control (PBAC) or claims-based access control (CBAC), which is a Microsoft-specific term. The key standards that implement ABAC are XACML and ALFA (XACML) .
Authorizations are expressed as access policies in some types of "policy definition application", e.g. in the form of an access control list or a capability, or a policy administration point e.g. XACML. On the basis of the "principle of least privilege": consumers should only be authorized to access whatever they need to do their jobs. Older ...
SAML 2, OpenID, OAuth, XACML, LDAP v3, JM Cloud Federation Service [19] Radiant Logic: Commercial SAML 2.0, WS-Federation, OAuth 2.0, OpenID Cloudseal [20] Cloudseal: SaaS Cognito [21] Amazon: Commercial SAML 2.0 Comfact IDP [22] Comfact: Commercial Signicat [23] Signicat: Commercial Corto project home: GÉANT: OSS DACS [24] Safran Identity ...
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HERAS AF is a well established open-source XACML 2.0 implementation. It provides an extended implementation of the XACML [ 1 ] 2.0 standard. It is freely available, established and based on future driven technologies and standards.