LEO: Low Overhead Encryption ORAM for Non-Volatile Memories

Rakshit, Joydeep; Mohanram, Kartik

doi:10.1109/lca.2018.2795621

Cited by 8 publications

(3 citation statements)

References 19 publications

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“…To provide data confidentiality, NVM can utilize lightweight encryption schemes [59,69]; to detect and fix integrity issues, adopting Merkle tree and support its persistent updates have been recently studied [7,66,73]. Access pattern leakage is another degree of vulnerability, and we can add obfuscation with the help of ORAM [46].…”

Section: Persistent System With Nvmmentioning

confidence: 99%

“…Therefore, an NVM-based ORAM system could bring benefits from the two worlds. While some prior works start to address this issue [6,12,14,46], they either work on a different threat model [6], or emphasis on write access overhead [46], or provide a less secure solution [12,14]. None of the prior works consider the crash consistency problem of ORAM when it is being implemented on NVM.…”

Section: Introductionmentioning

confidence: 99%

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Ps-Oram

Liu

Xiao

et al. 2022

Proceedings of the 49th Annual International Symposium on Computer Architecture

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Oblivious RAM (ORAM) is a provable secure primitive to prevent access pattern leakage on the memory bus. By randomly remapping the data blocks and accessing redundant blocks, ORAM prevents access pattern leakage through obfuscation. Byte-addressable non-volatile memory (NVM) is considered as the candidate for main memory due to its better scalability, competitive performance, and persistent data store. While there is much prior work focusing on improving ORAM's performance on the conventional DRAM-based memory system, when the memory technology shifts to use NVM, ensuring an efficient crash-consistent ORAM is needed for security, correctness, and performance. Directly using traditional software-based crash consistency support for ORAM system is not only expensive but also insecure.In this work, we study how to persist ORAM construction with an NVM-based memory system. To support crash consistency without damaging ORAM system security and compromising the performance, we propose PS-ORAM. PS-ORAM consists of a novel ORAM controller design and a set of ORAM access protocols that support crash consistency.

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Section: Persistent System With Nvmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ps-Oram

Liu

Xiao

et al. 2022

Proceedings of the 49th Annual International Symposium on Computer Architecture

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“…S2Dedup can be extended with alternative secure schemes resorting to techniques such as Oblivious RAM (ORAM) [41] to further prevent attackers from disclosing duplicate blocks. In this paper, we prioritise feasibility and avoid techniques, such as ORAM, that would take a considerable toll in the performance of our storage solution [39,48].…”

Section: Security Analysismentioning

confidence: 99%

S2Dedup

Miranda

Esteves

Portela

et al. 2021

Proceedings of the 14th ACM International Conference on Systems and Storage

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Secure deduplication allows removing duplicate content at third-party storage services while preserving the privacy of users' data. However, current solutions are built with strict designs that cannot be adapted to storage service and applications with different security and performance requirements.We present S2Dedup, a trusted hardware-based privacypreserving deduplication system designed to support multiple security schemes that enable different levels of performance, security guarantees and space savings. An in-depth evaluation shows these trade-offs for the distinct Intel SGXbased secure schemes supported by our prototype.Moreover, we propose a novel Epoch and Exact Frequency scheme that prevents frequency analysis leakage attacks present in current deterministic approaches for secure deduplication while maintaining similar performance and space savings to state-of-the-art approaches.

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A survey on attack vectors in stack cache memory

Khoshavi

Maghsoudloo

et al. 2020

Integration

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LEO: Low Overhead Encryption ORAM for Non-Volatile Memories

Cited by 8 publications

References 19 publications

Ps-Oram

Ps-Oram

S2Dedup

A survey on attack vectors in stack cache memory

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