Authorization WG Update David Kelsey EU Grid PMA, Copenhagen 27 May 2008

27 May 08EU Grid PMA, Kelsey2 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

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 27 May 08EU Grid PMA, Kelsey3

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 27 May 08EU Grid PMA, Kelsey4

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. 27 May 08EU Grid PMA, Kelsey5

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 27 May 08EU Grid PMA, Kelsey6

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. 27 May 08EU Grid PMA, Kelsey7

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! 27 May 08EU Grid PMA, Kelsey8

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 27 May 08EU Grid PMA, Kelsey9

Accreditation Options –Existing IGTF PMAs –Form new AuthZ PMAs –Large Grids (EGEE, OSG etc) –NGIs –Or mix of some/all of these 27 May 08EU Grid PMA, Kelsey10

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 27 May 08EU Grid PMA, Kelsey11

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 27 May 08EU Grid PMA, Kelsey12

AC validation Document from OSG Attribute Certificate Validation in OSG –Mike H to say more? 27 May 08EU Grid PMA, Kelsey13

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? 27 May 08EU Grid PMA, Kelsey14

Discussion 27 May 08EU Grid PMA, Kelsey15