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Enhancing Interoperability in Grid Computing: Shibboleth and SAML Integration for Phase 3

This document outlines the ongoing design of Phase 3 in the gLite project, focusing on enhancing interoperability with Shibboleth and SAML. The goal is to extend the use of SAML beyond what was provided in previous phases, enabling secure access to grid resources without requiring users to manage certificates. Three options for SAML integration are discussed, with a preference for enabling selected grid resources. The document emphasizes the benefits of a smoother user experience and compatibility with existing systems while maintaining flexibility for future developments.

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Enhancing Interoperability in Grid Computing: Shibboleth and SAML Integration for Phase 3

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  1. Interoperability Shibboleth - gLitePhase 3 Christoph Witzig, SWITCH JRA1 Mar 8, 2007

  2. Outline • Outlook: Phase 3 Note: Design currently in progress - open for all kind of feedback JRA1 Catania Mar 8, 2007

  3. Review Phase 1 and 2 JRA1 Catania Mar 8, 2007

  4. Phase 3 (1) • Work program for EGEE-II year 2 and beyond: • Operational use of phase 1 and 2 within Switzerland • Inter-federation access with other partners (EGEE-III) ? • Phase 3 • Goal of phase 3: Extend use of SAML in grids beyond what is already provided by phase 1 and 2 • 3 options: • Option 1: Embed SAML assertions in certificates and let them evaluate by grid resources • Option 2: SAML-enable selected grid resources • Option 3: extend certificate-based security infrastructure with SAML • Option 2 preferred • Option 1: what is additional value beyond phase 1 and 2 ? • Option 3: means to modify every grid service - neither desired nor realistic JRA1 Catania Mar 8, 2007

  5. Phase 3 (2) • Phase 3 is currently being designed • Started with general use case of gLite job submission mechanism and broke down into different steps • See document “Grid Use-Cases for Shibboleth” https://edms.cern.ch/document/826978/1 JRA1 Catania Mar 8, 2007

  6. Job Submission Use-Case JRA1 Catania Mar 8, 2007

  7. Idea Phase 3 • SAML-enable those service, with which the user interacts directly • WMS • File access • Benefits: • (Average) User has no certificates any more • Introduce SAML gently beyond phase 1 and 2, gain experience • No modifications on most grid software (--> deployment) • Compatible with Shibboleth roadmap (2.0, 2.1) and ID-WSF implementation • All options open for future JRA1 Catania Mar 8, 2007

  8. Interoperability SAML - X.509 • Part of Grid infrastructure is SAML-capable, part is pure X.509 - how to interconnect them? • XTS (X.509 translation/token service) • Aka STS • Translates a SAML assertion into a X.509 certificate • Webservice • Is being contacted by grid service if it receives a SAML assertion, but it only understands X.509 • One coupling element between the SAML world and the X.509 world • Avoid coupling every grid resource with every Shibboleth IdP JRA1 Catania Mar 8, 2007

  9. Summary • Interoperability gLite - Shibboleth: • Phase 1: SLCS service (short lived credential service) • Online CA issuing X.509 certificates based upon authN at Shibboleth IdP • SWITCHslcs CA EuGridPMA accredited • Phase 2: VASH (VOMS Attributes from Shibboleth) • Transfers Shibboleth attributes into VOMS • (Shib) attributes are available to grid resources as part of VOMS AC • Software development finished • Phase 3: • Currently being designed • Idea to SAML-enable a selected (small) number of grid resources (those close to the user) JRA1 Catania Mar 8, 2007

  10. Q & A JRA1 Catania Mar 8, 2007

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