a Grid-based Operating System

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XtreemOS Mutual Authentication Protocol:An Overview• Some Notation:• Encryption is { M }K pb X• Digital Signing {| M |}K pr X• [U CDA] means communication is over a privatechannel• g is the primitive root (i.e. generator) and n is a primenumber• Rx is a random number generated by x• G X = g Rx mod n• G XY = (g Rx mod n) Ry mod n• The Diffie-Hellman property is that G XY = G YXXtreemOS IP projectis funded by the European Commission under contract IST-FP6-033576
XtreemOS Mutual AuthenticationProtocol: An Overview• The protocol consists of the following steps between a user U,a credential distribution authority, CDA, a resource certificationauthority and a resource node, N:1. [U CDA]: U id , VO id , g, n, G U2. [CDA U]: {|U id , VO id , g, n, G U , T VOM |}K pr CDA3. [N RCA]: N id , VO id4. [RCA N]: {|N id , VO id |}K pr RCA5. U N: { {|U id , VO id , g, n, G U , T VOM |}K pr CDA, Msg U , T U }K pb N6. N U: G N , { {|N id , VO id |}K pr RCA }K pb U, {Msg U , T U }G UN , {Msg N ,T N }G UN7. U N: {Msg N , T N }G NUXtreemOS IP projectis funded by the European Commission under contract IST-FP6-033576
Page 1 and 2: Verifying a Mutual Authentication P
Page 3 and 4: e-Science Centre• Provide high pe
Page 5 and 6: The XtreemOS Operating System in aN
Page 7 and 8: The XtreemOS Trust Model• PKI-bas
Page 9: XtreemOS Mutual Authentication Prot
Page 13 and 14: Data Leakage Analysis• The DL ana
Page 15 and 16: Usability Discussion• Usability o
Page 17 and 18: Thank you• The XtreemOS Formal An

a Grid-based Operating System

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