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Alba Coll September 2008 Research and development approach on the enhancement of e-Catalunya platform Master’s Degree in Information Technology Project Director: Rosa Mª Martín Santiago Co-Director: Hector Puente Tutor: Jose María Barceló Ordinas Alba Coll September 2008 Research and development approach on the enhancement of e-Catalunya platform 2 Research and development approach on the enhancement of e-Catalunya platform To Rosa Mª Martín and Hector Puente for their support and their never ending patience. To the e-Catalunya team for making me go to work every morning with a smile and for helping me every time the text processor revolted against me. To my flat mates for forgiving my last two weeks cleaning tasks skipping To Ada, Carles and Laura for being there. To Ada for making our sleepless-, working-sessions nights a hilarious time. To my parents for putting up with me in my most hysterical moments and for helping me with everything they can. 3 Research and development approach on the enhancement of e-Catalunya platform 4 Research and development approach on the enhancement of e-Catalunya platform Index 1. Introduction....................................................................................... 11 1.1. Background ....................................................................................11 1.2. Project objectives............................................................................12 1.3. Motivations.....................................................................................12 1.4. Work environment...........................................................................14 1.5. Document organization ....................................................................15 2. The e-Catalunya Project..................................................................... 17 2.1. Introduction ...................................................................................17 2.2. Portals and groups ..........................................................................18 2.3. User Roles......................................................................................19 2.4. Infrastructure Software....................................................................19 2.4.1. Jakarta Tomcat ........................................................................19 2.4.2. Apache and PHP .......................................................................20 2.4.3. Apache Tomcat Connector .........................................................20 2.4.4. MySQL ....................................................................................20 2.4.5. OpenLDAP ...............................................................................20 2.4.6. Sympa ....................................................................................21 2.4.7. Postfix.....................................................................................21 2.5. e-Catalunya Authentication...............................................................21 2.6. Tools .............................................................................................22 2.6.1. Wiki ........................................................................................22 2.6.2. Blog........................................................................................23 2.6.3. Calendar..................................................................................24 2.6.4. Repository ...............................................................................25 2.6.5. Photo Album ............................................................................26 2.6.6. Mailroom .................................................................................26 2.6.7. Mailing list ...............................................................................27 2.6.8. Forum .....................................................................................28 2.6.9. eBugTracker ............................................................................28 2.7. Social and Knowledge Network .........................................................29 2.8. Administration Panel........................................................................31 2.9. ECAT Platform.................................................................................32 3. Federation system ............................................................................. 33 3.1. Technological Concepts ....................................................................33 3.1.1. Digital Identity .........................................................................33 5 Research and development approach on the enhancement of e-Catalunya platform 3.1.2. Digital Certificate......................................................................33 3.1.3. HTTP.......................................................................................34 3.1.4. HTTPS.....................................................................................35 3.1.5. SOAP ......................................................................................36 3.2. Federation Fundamentals .................................................................37 3.2.1. Single Sign-On .........................................................................37 3.2.2. Single Sign-Out........................................................................37 3.2.3. Federations..............................................................................37 3.2.3.1. Federation motivation.........................................................39 3.2.4. Attributes ................................................................................40 3.2.5. Account linking.........................................................................41 4. Federation Specifications................................................................... 43 4.1. SAML .............................................................................................43 4.2. Liberty Phase 1 ...............................................................................44 4.3. Liberty Phase 2 ...............................................................................45 4.4. SAML 2.0 .......................................................................................45 4.5. WS-Federation................................................................................45 4.6. OpenID ..........................................................................................45 4.7. Comparison ....................................................................................46 4.7.1. Single Sign-On control flows ......................................................47 4.7.2. Single Logout...........................................................................47 4.7.3. Account federation / Linkage......................................................47 4.7.4. Client profiles...........................................................................47 4.7.5. Security Tokens/Security Assertions ...........................................48 4.7.6. Security ..................................................................................48 4.7.7. User Privacy Controls ................................................................48 4.7.8. Developer Organization .............................................................49 4.7.9. Implementation Cost.................................................................49 4.7.10. IdP Discovery .......................................................................49 4.7.11. Metadata..............................................................................49 4.7.12. Protocol bindings...................................................................50 4.7.13. User Identifier Treatment .......................................................50 5. Federation specifications in depth ..................................................... 53 5.1. SAML 1 ..........................................................................................53 5.1.1. SAML 1 Assertions ....................................................................54 5.1.2. SAML 1 Protocols......................................................................54 5.1.3. SAML 1 Bindings.......................................................................55 5.1.4. SAML 1 Profiles ........................................................................56 6 Research and development approach on the enhancement of e-Catalunya platform 5.1.4.1. Browser/Artifact Profile.......................................................56 5.1.4.2. Browser/Post Profile ...........................................................58 5.2. Liberty Alliance Specifications ...........................................................59 5.2.1. Liberty Phase 1 ........................................................................59 5.2.1.1. Liberty Authentication contexts............................................60 5.2.1.2. Liberty Protocols ................................................................61 5.2.1.3. Liberty Binding ..................................................................62 5.2.1.4. Liberty Profiles ..................................................................63 5.2.1.4.1. Single Sign-On and Federation.........................................63 5.2.1.4.2. Register Name Identifier .................................................64 5.2.1.4.3. Identity Termination Notification ......................................65 5.2.1.4.4. Single Logout ................................................................67 5.2.1.4.5.
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