Latifa Boursas

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—The need for collaborative service provisioning across different providers' domains is being addressed by Circles of Trust (CoT), whose members adhere to the same policies and expose the same interfaces for collaboration. Today's CoT specifications require a high initial effort on behalf of enrolling members, thus obviating quick or even ad hoc setup of(More)
We report on our experiences with the implementation of a parallel algorithm to compute the cycle structure of a permutation given as an oracle. As a sub-problem, the cycle structure of a modified permutation given as a table that is partitioned over N hard disks has to be computed. While a minor point during algorithm design and analysis, we spent most(More)
— In Federated Identity Management (FIM), user administration is decentralized: Service Providers (SPs) can request information about the users from their respective Identity Providers (IDPs). The subsequent processing of this data with respect to service provisioning and various privacy aspects are open research issues. We first specify how SPs can use(More)
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