[PDF] Top 20 Is there an Oblivious RAM Lower Bound for Online Reads?
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Is there an Oblivious RAM Lower Bound for Online Reads?
... that lower bounds on the size of the encoding circuit of such codes will similarly yield circuit lower ...support reads from memory stored on a remote server, are closely related to read-only ORAM, ... See full document
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Oblivious Parallel RAM and Applications
... Theorem 1.1 (OPRAM – Informally stated). There exists an OPRAM compiler with O(log(m) log 3 (n)) worst-case overhead in total and parallel computation, and f(n) memory overhead for any f ∈ ω(1), where n is the memory ... See full document
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PanORAMa: Oblivious RAM with Logarithmic Overhead
... a lower bound on the amortized communication complex- ity required to maintain ...a lower bound result of O(log C N ) blocks of bandwidth overhead for any ORAM construction for a database of ... See full document
36
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
A Simple Recursive Tree Oblivious RAM
... leaves that can store all the N items. I.e. a total storage of only O(N ) items at the server. This also improves the complexity: instead of traversing a log N height tree and going over O(log N ) items in each level ... See full document
14
Resizable Tree-Based Oblivious RAM
... Given that pruning an entire level at once is very inefficient, we now investigate how pruning can be done in a more gradual way. For every α elements we delete, we will prune two children and merge their contents into ... See full document
20
Foundations of Differentially Oblivious Algorithms
... It is well-known that a program’s memory access pattern can leak information about its input. To thwart such leakage, most existing works adopt the technique of oblivious RAM (ORAM) simulation. Such an ... See full document
50
Onion ORAM: A Constant Bandwidth Blowup Oblivious RAM
... an Oblivious RAM (ORAM) with constant worst-case bandwidth blowup that leverages poly-logarithmic server computation to circumvent the logarithmic lower bound on ORAM bandwidth ... See full document
31
OptORAMa: Optimal Oblivious RAM
... their lower bound is restricted to schemes that treat the contents of each memory word as “indivisible” (see Boyle and Naor [7]) and make no cryptographic ...all online ORAM schemes, 1 even ones that ... See full document
75
Is There an Oblivious RAM Lower Bound?
... logarithmic lower bounds Ω(log n) on the overhead of offline ORAM compilers—as is implied by the [GO96] lower bound within the “balls and bins” setting—would directly imply new circuit lower ... See full document
29
Yes, There is an Oblivious RAM Lower Bound!
... prove lower bounds for word-RAM data structures and is extremely powerful in the sense that it allows arbitrary compu- tations and only charge for memory ...our lower bound model and ... See full document
21
Toward Robust Hidden Volumes using Write-Only Oblivious RAM
... In this paper, we have proposed new, parameterized definitions of formal security for hidden volume encryption. Existing work lacks security against strong adversaries with multiple snapshot and chosen plaintext ... See full document
12
Pseudorandomness and Fourier-Growth Bounds for Width-3 Branching Programs
... for oblivious, read-once, width-3 branching programs, which can read their input bits in any ...new bound on the Fourier growth of width-3, oblivious, read-once branching ... See full document
50
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
8
Can We Overcome the $n \log n$ Barrier for Oblivious Sorting?
... IO-optimal oblivious sort for constant-sized keys). There exists an oblivious and cache-agnostic algorithm that can sort O(1)-bit keys (except with negligible probability) in only O(n/B) IOs ... See full document
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TWORAM: Round-Optimal Oblivious RAM with Applications to Searchable Encryption
... Oblivious RAM. ORAM protocols with a non-constant number of roundtrips can be categorized into hierarchical [18,19,24,27], motivated by the seminal work of Goldre- ich and Ostrovsky [17], and tree-based ... See full document
29
Multi-Client Oblivious RAM secure against Malicious Servers
... Although the interface exposed to the client by Path ORAM is the same as other ORAM protocols, it is easiest to understand the Access operation as being broken down into three parts: ReadAndRemove, Add, and Evict [22]. ... See full document
23
Octopus ORAM: An Oblivious RAM with Communication and Server Storage Efficiency
... Index-based ORAMs [3–6, 8, 9, 20–26, 29–31, 34– 39, 46] use index table for data lookup. They require the client to either store the index table locally, or outsource it to the server recursively in a way similar to ... See full document
18
Write-Only Oblivious RAM based Privacy-Preserved Access of Outsourced Data
... Oblivious RAM (ORAM) has recently attracted a lot of interest since it can be used to protect the privacy of data user’s data access pattern from (honest but curious) outsourced ...produces lower ... See full document
27
Is there an Upper Limit on Thyromental Distance ?
... Volume 4, Issue 3, March – 2019 International Journal of Innovative Science and Research Technology ISSN No 2456 2165 IJISRT19MA212 www ijisrt com 74 Is there an Upper Limit on Thyromental Distance ?[.] ... See full document
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