Titlebook: Data and Applications Security and Privacy XXVII; 27th Annual IFIP WG Lingyu Wang,Basit Shafiq Conference proceedings 2013 IFIP Internatio

能量守恒

人充满活力

Optimal Re-encryption Strategy for Joins in Encrypted Databaseshat column that will result in the minimum number of re-encryptions even under an unknown schedule of joins. Naive strategies may perform too many or even infinitely many re-encryptions. We provide two strategies that allow for a much better performance. In particular the asymptotic behavior is .(..

施魔法

Access Control and Query Verification for Untrusted Databasesowner lacks direct control over the hardware and the software running at the server, there is a need to ensure that the data are not read or modified by unauthorized entities. Even though a simple encryption of the data before transferring it to the server ensures that only authorized entities who h

宣誓书

JUST

A Model for Trust-Based Access Control and Delegation in Mobile Cloudsssing subjects may dynamically change, resources requiring protection may be created or modified, and a subject’s access requirements to resources may change during the course of the application execution. Cloud tenants may need to acquire permissions from different administrative domains based on t

CLIFF

foodstuff

BRIBE

杠杆

Customary

Towards User-Oriented RBAC Modelnstruct the given permission assignments, and the other is user-oriented approximate RMP, which tolerates a certain amount of deviation from the complete reconstruction. The extra sparseness constraint poses a great challenge to role mining, which in general is already a hard problem. We examine som