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Security Assertion Markup Language 2.0 (SAML 2.0) is a version of the SAML standard for exchanging authentication and authorization identities between security domains.SAML 2.0 is an XML-based protocol that uses security tokens containing assertions to pass information about a principal (usually an end user) between a SAML authority, named an Identity Provider, and a SAML consumer, named a ...
Open Source Single Sign-On Server Keycloak (Red Hat Single Sign-On) Red Hat: Open source: Yes: Federated SSO (LDAP and Active Directory), standard protocols (OpenID Connect, OAuth 2.0 and SAML 2.0) for Web, clustering and single sign on. Red Hat Single Sign-On is version of Keycloak for which RedHat provides commercial support. Microsoft ...
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 ...
Single sign-on is relatively easy to accomplish within a security domain (using cookies, for example) but extending SSO across security domains is more difficult and resulted in the proliferation of non-interoperable proprietary technologies. The SAML Web Browser SSO profile was specified and standardized to promote interoperability. [2]
SAML 2.0 supports W3C XML encryption and service-provider–initiated web browser single sign-on exchanges. [21] A user wielding a user agent (usually a web browser) is called the subject in SAML-based single sign-on. The user requests a web resource protected by a SAML service provider.
A SAML authentication authority that participates in one or more SSO Profiles of SAML [OS 2] is called a SAML identity provider (or simply identity provider if the domain is understood). For example, an authentication authority that participates in SAML Web Browser SSO is an identity provider that performs the following essential tasks:
The following SAML protocol flow is intended to illustrate the use of metadata at various stages of SAML web browser SSO. (See the SAML V2.0 Profiles [OS 2] specification for more information about SAML web browser SSO.) SAML web browser SSO with discovery and login
Perhaps the most important contributed feature was the legacy Shibboleth AuthnRequest protocol. Since the SAML 1.1 protocol was inherently an IdP-first protocol, Shibboleth invented a simple HTTP-based authentication request protocol that turned SAML 1.1 into an SP-first protocol.