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Thursday, March 17, 2016

Identity Patterns with the WSO2 Identity Server
Single Sign On with delegated access control

Problem:
  • The business users need to login into multiple service providers with single sign on via an identity provider. 
  • Some service providers may need to access backend APIs on behalf of the logged in user. For example, a user logs into the Cute-Cup-Cake-Factory service provider via SAML 2.0 web SSO and then the service provider (Cute-Cup-Cake-Factor) needs to access user’s Google Calendar API on behalf of the user to schedule the order pickup.
Solution:
  • Represent all the service provider in the WSO2 Identity Server as Service Providers and configure inbound authentication appropriately either with SAML 2.0 or OpenID Connect. 
  • For each service provider that needs to access backend APIs, configure OAuth 2.0 as an inbound authenticator, in addition to the SSO protocol (SSO protocol can be SAML 2.0 or OpenID Connect). 
  • Once a user logs into the service provider, either via SAML 2.0 or OpenID Connect, use the appropriate grant type (SAML grant type for OAuth 2.0 or JWT grant type for OAuth 2.0) to exchange the SAML or the JWT token for an access token, by talking to the token endpoint of the WSO2 Identity Server 
  • Products: WSO2 Identity Server 5.0.0+, WSO2 API Manager, WSO2 Application Server 

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