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Explore a 15-minute conference presentation from USENIX Security '25 that introduces V-ORAM, a versatile and adaptive Oblivious RAM framework designed to efficiently serve dynamic workloads through service transformation. Learn how researchers from Northwestern Polytechnical University, The University of Melbourne, and Harbin Engineering University address the limitation that traditional ORAM schemes are optimized for specific client workloads and struggle to adapt once deployed. Discover the innovative service transformation protocol that uses a base ORAM as an intermediary to synchronize tree-based ORAM states without requiring clients to download and rebuild entire systems. Examine the formal security proofs demonstrating that V-ORAM maintains ORAM security guarantees throughout the transformation process, and understand how the integrated planner recommends optimal ORAM service types and parameters based on client workloads, server resources, and monetary constraints. Review comprehensive evaluation results showing V-ORAM's dramatic efficiency improvements, including up to 10^4.12x savings in processing time and communication costs compared to direct ORAM rebuilding, 33.1% reduction in monetary costs for real-world workloads, and minimal impact on employed ORAM services with less than 5ms processing overhead and under 50KB communication requirements, validated through case studies using three medical datasets across different workload scenarios.
