V-ORAM: A Versatile and Adaptive ORAM Framework with Service Transformation...
summary
V-ORAM presents a framework that switches between tree-based ORAMs via a service transformation protocol using real RAM as base ORAM, synchronizing metadata without client-side rebuilds. Transformation time and bandwidth stay constant and independent of N, measured savings reach up to 10^4.12x versus full rebuilds, with monetary reductions up to 33.1% and per-transformation overhead under 5 ms and 50 KB. Implementation includes a planner to pick ORAM type and parameters and evaluation on three medical datasets.
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chapters (7)
- 0:00V-ORAM framework intro
- 1:58Dynamic ORAM workloads
- 3:47V-ORAM transformation protocol
- 8:28Baseline ORAM selection
- 10:42Leakage risks in transformation
- 12:53Performance evaluation
- 14:37Conclusion and future work
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