EMI Development Plans for Identity Management Henri Mikkonen / HIP Moonshot, Grid and HPC Workshop London, UK

EMI INFSO-RI Content Motivation – Questionnaires to potential customers – AAI use cases Technology – Introduction to WS-Trust – WS-Trust interoperability & token profiles Implementation – Security Token Service (STS) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI Background AAI needs of the DCIs -workshop held at EGI Technical Forum (September / 2010) [1] Questionnaires for projects crossing national boundaries and NGIs – 3 User communities Biomed, Earth Sciences, HEP – 5 ESFRI projects CLARIN, Lifewatch, ELIXIR, EuroFEL, ILL – 2 NGIs Italy, U.K. 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI Results for the questionnaire [2] Grid users do not want to handle credentials themselves Grid users would like to obtain X.509 credentials and VOMS attributes from other credentials and vice-versa Projects would like to use federated identities Projects recognize that both national and international identity federations will become more important User identities and actions on a Grid should be protected (anonymized) Projects realize that access to the majority of Grid infrastructures requires and will require in the future X.509 credentials 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI AAI use cases [2] Use- case DescriptionStatus 1X.509 issuance based on AAI (another security domain) „Solved“ (but needs improvement!) 2AAI-enabled portals to Grid infrastructures Solutions exist SAML delegation new 3AAI-enabled Grid information portals Low priority 4Security Token ServiceNew, general purpose service, high priority 5Use of AAI attributes in GridInteresting, potentially very important 6VO registration using AAI (identity vetting) Low priority 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI WS-Trust specification [3] Builds on WS-Security specification – Methods for issuing, renewing, validating, and canceling security tokens – Trust relationships brokering Security token: a collection of statements (claims) about a user or resource – X.509 certificate, SAML assertion, Kerberos ticket, Username/Password, … Security Token Service (STS): a service used to issue, renew, validate and cancel tokens 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI WS-Trust schema fragment (1/2) Actual content model is non-deterministic, hence wildcard. The following shows intended content model: RequestSecurityToken (RST) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI WS-Trust schema fragment (2/2) Actual content model is non-deterministic, hence wildcard. The following shows intended content model: RequestSecurityTokenResponse (RSTR) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI WS-Trust profiles [4] The specification provides an open content model for messages – Provides maximal extensibility, but theoretically infinite number of messages can be compliant – Profiles need to be defined for achieving interoperability This effort was already started by Chad La Joie in the EGEE-III project – WS-Trust interoperability profile – Token-specific profiles (X.509, SAML, Username) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI WS-Trust Interoperability profile Base protocol requirements – SOAP-binding, common message format requirements and processing rules Operation-specific requirements Also, profiles for – XML-Signature – XML-Encryption – Proof of key possession – Message security (integrity / confidentiality) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI STS functionality overview Authenticates and “authorizes” users based on security tokens Transforms the security token into another security token Aggregates required information from external sources Establishes a trust relationship between different application domains 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI STS Example Use Case – SAML to X.509 – (1/2) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI STS Example Use Case – SAML to X.509 – (2/2) 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI STS Implementation Plan (1/2) The first version will support the ISSUE operation Supported inbound tokens (used for the user authentication): – X.509, X.509 Proxy, SAML, Kerberos Supported outbound tokens: – X.509, using external online CA – X.509 Proxy, exploiting VOMS – SAML 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI STS Implementation Plan (2/2) Implementation is based on the upcoming Shibboleth IDP & OpenWS/SAML v3 (Shib3) – Existing building blocks for the service: Authentication Engine API Attribute Authority – Required extensions: WS-Trust Profile Handler Authentication Engine plug-ins for inbound tokens Token Authority for outbound tokens 07/07/2011Henri Moonshot, Grid and HPC Workshop

EMI INFSO-RI References [1] EGI TF 2010: AAI needs of the DCIs – =11&confId=48# =11&confId=48# [2] EMI AAI Working Group – [3] OASIS Standard: WS-Trust 1.3 – [4] Chad La Joie / SWITCH: WS-Trust 1.3 Interoperability profile – /07/2011Henri Moonshot, Grid and HPC Workshop

EMI is partially funded by the European Commission under Grant Agreement RI Thank you!