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Authorization WG Update

Authorization WG Update. David Kelsey EU Grid PMA, Copenhagen 27 May 2008. Mandate. EUGridPMA Working Group on Policy Management for Grid Authorisation Mandate and aims To prepare recommendations on policy and global trust issues related to Grid Authorisation (AuthZ)

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Authorization WG Update

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  1. Authorization WGUpdate David Kelsey EU Grid PMA, Copenhagen27 May 2008

  2. Mandate • EUGridPMA Working Group on Policy Management for Grid Authorisation • Mandate and aims • To prepare recommendations on policy and global trust issues related to Grid Authorisation (AuthZ) • The initial list of issues will include: • Minimum requirements and best practice for the operation of a Grid AuthZ attribute authority • Minimum requirements and best practice for Virtual Organisation user and service membership management • Accreditation of Attribute Authorities (AA) • Accreditation of Virtual Organisations and their membership management procedures EU Grid PMA, Kelsey

  3. Mandate (2) • Repositories and distribution of accredited AA roots of trust • Technical details of attribute signing and trust validation • To recommend how IGTF could handle the definition of AuthZ policy and related accreditation during the next 3 to 5 years, taking into account the move towards a sustainable EU Grid Infrastructure and constituent national Grids EU Grid PMA, Kelsey

  4. Mailing list members • M Altunay • J Basney • V Ciaschini • R Cowles • G Garzoglio • D Groep • M Helm • E Imamagic • J Jensen • C Kanellopoulos • D Kelsey • O Koeroo • D Kouril • A McNab • D O’Callaghan • M Sova • Y Tanaka • C Triantafyllidis • W Weisz • J Wolfrat EU Grid PMA, Kelsey

  5. Discussion on mandate • Several suggestions received • First mandate for this WG should be to set up a list of all known AuthZ tools for the Grid environment available and in development • To determine actual and near future best practice • Especially it should help to discern advantages and disadvantages of SAML assertions versus Attribute certificates versus attributes directly included in proxy certificates. • This could guide us in the more theoretical aspects of the WG work. EU Grid PMA, Kelsey

  6. Discussion (2) • Policy implications for VOs and VO service providers are essentially the same whatever signing and attribute/assertion technology is used • Perhaps there is scope for an AAOPS in OGF? • need for implementations that work, as opposed to blue sky protocol design EU Grid PMA, Kelsey

  7. Discussion (3) • I agree that we may start with working on VOMS; however, staying implementation-independent, as much as possible, would help us in the long run • How LoA of the underlying AuC assertions affect what AuZ can do • This leads to a sort of risk assessment framework • If I have a precious resource, I need high quality AuC assertions underneath it. EU Grid PMA, Kelsey

  8. Policy models • Attribute Authority Service Profile • Based on VOMS • Can we make it technology independent? • This should be written • VO procedures • JSPG working on two documents • VO Registration Policy • VO Membership Management Policy • Probably don’t need another one! EU Grid PMA, Kelsey

  9. Scaling issues • Today in EGEE • ~200 VOs (mix of global, international, regional, national, local) • # VOMS servers (how many?) • Need to quantify • Future EGI/NGI world • ~35 to 40 Grids in Europe • EU Grid PMA • Accredits ~2 per meeting and reviews ~4 EU Grid PMA, Kelsey

  10. Accreditation • Options • Existing IGTF PMAs • Form new AuthZ PMAs • Large Grids (EGEE, OSG etc) • NGIs • Or mix of some/all of these EU Grid PMA, Kelsey

  11. Accreditation (2) • My personal preferences (not discussed yet) • IGTF defines the standards • Others do accreditation • With IGTF members • Important to have feedback into standards • Large Grids or Coordination (call it EGI) • Accredit Global VOs • And run AA services for them • Accredited by IGTF EU Grid PMA, Kelsey

  12. Accreditation (3) • Every VO should have a home Grid • Runs the AA services • NGI AA service is accredited by IGTF or EGI • Accredits the VO procedures • Bootstrap • Prepare draft profiles (AA and VO) • Accredit a small number of global VOs • Feedback and improve profiles EU Grid PMA, Kelsey

  13. AC validation • Document from OSG • Attribute Certificate Validation in OSG • Mike H to say more? EU Grid PMA, Kelsey

  14. Meetings and plans • Work should start on the draft AA profile • Needs a small team • Then wider discussion • I propose to hold a workshop • Early autumn • EGEE’08? • Joint with EU Grid PMA Lisbon meeting? EU Grid PMA, Kelsey

  15. Discussion EU Grid PMA, Kelsey

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