[PDF] Top 20 Oblivious Parallel RAM and Applications
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Oblivious Parallel RAM and Applications
... • Parallel memory lookups: As discussed, a core challenge is in hiding correlations in parallel CPU ...an oblivious aggregation operation—whether two (or more) of them wish to access the same data ... See full document
37
Oblivious Parallel RAM: Improved Efficiency and Generic Constructions
... The basic cryptographic method to hide access patterns is Oblivious RAM (ORAM) [8,9]. It compiles logical access sequences (from a client) into garbled ones (to a storage space, or server) so that a curious ... See full document
30
An Oblivious Parallel RAM with $O(\log^2 N)$ Parallel Runtime Blowup
... Oblivious RAM is a cryptographic primitive that allows a client to store and retrieve blocks of data on an untrusted server in such a way that no information about the access pattern of the client’s ... See full document
12
Privacy-Preserving Minimum Spanning Trees through Oblivious Parallel RAM for Secure Multiparty Computation
... an oblivious random shuffle for vectors of length ...an oblivious and a public shuffle; this operation, as well as the generation of a random shuffle, is supported by existing implementations of ...the ... See full document
20
Perfectly Secure Oblivious Parallel RAM
... perfectly oblivious simulation of PRAM iff OPRAM is perfectly oblivious, and moreover OPRAM(inp) is identically distributed as PRAM(inp) for any input ...overhead). Oblivious simulation ... See full document
54
Bucket ORAM: Single Online Roundtrip, Constant Bandwidth Oblivious RAM
... On the other hand, the level-rebuild-style shuffling strategy of hierarchical ORAMs have certain desirable properties. In particular, Williams and Sion show a technique to construct a single online roundtrip ORAM [44], ... See full document
33
Toward Practical Private Access to Data Centers via Parallel ORAM
... Classic. Goldreich and Ostrovsky [12–14] introduced ORAM as a mechanism by which a trusted processor could make use of an untrusted RAM. Most existing ORAM solutions use the basic memory structure sug- gested by ... See full document
20
The Fallacy of Composition of Oblivious RAM and Searchable Encryption
... Oblivious RAM enables a client to access memory without leak- ing the access pattern. However, access pattern hiding properties of ORAM are limited to a random access memory (RAM) inter- face, which ... See full document
10
Adaptive Garbled RAM from Laconic Oblivious Transfer
... Solving Challenge 1. Timed encryption provides a natural approach to solving challenge 1. In every CPU step, we hardwire a time constrained key that allows that CPU step to decrypt all the memory updates done by the ... See full document
44
Onion ORAM: A Constant Bandwidth Blowup Oblivious RAM
... Practical efficiency. To show how our results translate to practice, Section 6.4 compares our semi-honest AHE-based construction against Path PIR [35] and Circuit ORAM [50]—the best prior schemes with and without server ... See full document
31
Black-Box Parallel Garbled RAM
... on parallel Garbled RAM was initiated in the paper of Boyle, Chung and Pass [3] where they study it in the context of building an Oblivious Parallel RAM (this work, along with another ... See full document
21
SCORAM: Oblivious RAM for Secure Computation
... In this section, we show the performance of scoram when used in practical applications. We assume Alice holds a sorted array and Bob holds queries. They would like to re- peatedly search for some element over the ... See full document
12
Is There an Oblivious RAM Lower Bound?
... Two important ideas we employ in our solution are: (i) a bit-slicing/SIMD approach where we utilize the inherent w parallelism of a CPU with words of size w in order to simulate w circuits in parallel. This ... See full document
29
Constants Count: Practical Improvements to Oblivious RAM
... In this study, we show how Ring ORAM improves the performance of secure processors over Path ORAM. We assume the same processor/cache architecture as [5], given in Table 4 of that work. We evaluate a 4 GigaByte ORAM with ... See full document
16
PRO-ORAM: Constant Latency Read-Only Oblivious RAM
... In this work, we present PRO-ORAM— an ORAM construction that achieves constant latencies per access in a large class of applications. PRO-ORAM theoretically and empirically guarantees this for read-only data ... See full document
15
Is there an Oblivious RAM Lower Bound for Online Reads?
... The main drawback of the Boyle and Naor result [BN16] is that it only applies to the offline setting, which is not very natural and is insufficient for essentially any imaginable ORAM applica- tion. More specifically, ... See full document
42
Oblivious Network RAM and Leveraging Parallelism to Achieve Obliviousness
... Oblivious RAM (ORAM), introduced by Goldreich and Ostrovsky [18,19], allows a trusted CPU (or a trusted computational node) to obliviously access untrusted memory (or storage) during computa- tion, such ... See full document
29
TWORAM: Round-Optimal Oblivious RAM with Applications to Searchable Encryption
... efficient oblivious RAM (ORAM) protocol providing oblivious access (read and write) of a memory index y in exactly two rounds: The client prepares an encrypted query encapsulating y and sends it to ... See full document
29
Perfectly Secure Oblivious RAM with Sublinear Bandwidth Overhead
... In this section, we will present a very simple oblivious RAM construction with reasonable efficiency and a simple proof of security. To the best of our knowledge this is one of the, arguably, simplest ORAM ... See full document
26
A Low-Latency, Low-Area Hardware Oblivious RAM Controller
... We evaluate our design in terms of performance and area. Performance is measured as the latency (in FPGA cycles or real time) between when an FPGA user design requests a block and Tiny ORAM returns that block. Area is ... See full document
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