[PDF] Top 20 Toward Robust Hidden Volumes using Write-Only Oblivious RAM
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Toward Robust Hidden Volumes using Write-Only Oblivious RAM
... more robust constructions for hidden vol- umes and present HIVE, which is resistant to more powerful ad- versaries with multiple-snapshot ...for hidden volumes, and prove HIVE secure under ... See full document
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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 ...or write operation ... See full document
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A Low-Latency, Low-Area Hardware Oblivious RAM Controller
... Oblivious RAM (ORAM), introduced by Goldreich and Os- trovsky [10], [11], is a cryptographic primitive that completely eliminates the information leakage from a program’s memory access trace, ... See full document
8
Multi-Client Oblivious RAM secure against Malicious Servers
... Instead of a single ORAM accessed by a single client, we envision multiple clients se- curely exchanging or sharing data stored in a single ORAM. For example, imagine mul- tiple employees of a company that read from and ... See full document
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OptORAMa: Optimal Oblivious RAM
... = write, then the memory data in logical address addr is updated to ...or write), or evaluating a pseudorandom function ...[12,31,33,40,41,53]. Oblivious simulation of a (non-reactive) ...as ... See full document
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Is there an Oblivious RAM Lower Bound for Online Reads?
... An Oblivious RAM (ORAM), first introduced by Goldreich and Ostrovsky [Gol87, Ost90, GO96], is a scheme that allows a client to read and write to his data stored on untrusted storage, while entirely ... See full document
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Towards Efficient Secure Memory Systems with Oblivious RAM
... policy only affects the completion time but dose not reveal additional pattern ...enabled only if the paths of two accesses do not overlap at a level in ...the write operations, but not the ... See full document
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Resizable Tree-Based Oblivious RAM
... Shi et al. [17]’s ORAM implements Read and Write operations by applying, first, ReadAndRemove(a) operation, followed by an Add(d, a). A ReadAndRemove(a) will first fetch the tag t from the position map, thereby ... See full document
20
Muddler: Using Oblivious RAM For A Privacy Preserving Location-Based Service
... in only storing check-ins for a maximum of one month then that is the value that will be assigned to this ...a write access, then a stash look up is performed against randomP ... See full document
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Yes, There is an Oblivious RAM Lower Bound!
... The problem for us, is that the array maintenance problem is trivial for standard data structures. Thus the above approach fails utterly without more ideas. The issue is that for any distribution over read and ... See full document
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Dynamic Proofs of Retrievability via Oblivious RAM
... ORAM. Oblivious RAM (ORAM), initially defined by Goldreich and Ostrovsky [13], allows a client to outsource her memory to a remote server while allowing the client to perform random-access reads and writes ... See full document
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An Oblivious Parallel RAM with $O(\log^2 N)$ Parallel Runtime Blowup
... basic oblivious RAM setting consists of two parties, a client and a ...blocks using Access(op, addr, v 0 ) commands. Here, op ∈ {Read, Write}, addr is the logical address of the block, and v 0 ... See full document
12
Octopus ORAM: An Oblivious RAM with Communication and Server Storage Efficiency
... • Client-Server Communication Cost: During a query process, the client sends 2L offsets and a permutation vector for these offsets to S 0 ; meanwhile, it receives the query target block from S 1 and needs to write ... See full document
18
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 ... See full document
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Succinct Oblivious RAM
... if it is in P (`). If ba was not in P (`), we retrieve it from the stash. If the current request is a write request, we update the block contents to the new value. Then, we insert ba with the updated position ... See full document
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Is There an Oblivious RAM Lower Bound?
... and write the updated state back to memory, where the resulting Read/Write request information is written in a fixed ...or Write operation, the simulation will execute the above-described Offline ... See full document
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PRO-ORAM: Constant Latency Read-Only Oblivious RAM
... from write operations. Our main observation is that for read-only applications, the algo- rithm need not wait for all the accesses to finish before shuffling the entire ...observations only apply to ... See full document
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Onion ORAM: A Constant Bandwidth Blowup Oblivious RAM
... Verifying metadata. We can use standard “memory checking” [2] schemes based on Merkle trees [36] to ensure that the client always gets the correct metadata, or aborts if the malicious server ever sends an incorrect ... See full document
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Oblivious Parallel RAM: Improved Efficiency and Generic Constructions
... be hidden using semantically-secure en- ...dealing only with access-pattern security and tacitly assuming that all cells are going to be stored encrypted in the final scheme with a semantically ... See full document
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Perfectly Secure Oblivious RAM with Sublinear Bandwidth Overhead
... Position Map All known ORAM schemes need to maintain a position map of size O (N ) that keeps track of the ordering of elements inside the ORAM data structure on the server. For the sake of simplicity we will assume that ... See full document
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