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Oblivious RAM (ORAM) hides the memory access patterns, enhancing data privacy by preventing attackers from discovering sensitive information based on the sequence of memory accesses. The performance of ORAM is often limited by its inherent…

Cryptography and Security · Computer Science 2024-11-11 Haojie Ye , Yuchen Xia , Yuhan Chen , Kuan-Yu Chen , Yichao Yuan , Shuwen Deng , Baris Kasikci , Trevor Mudge , Nishil Talati

We study oblivious transfer (OT) between Alice and Bob in the presence of an eavesdropper Eve over a degraded wiretapped binary erasure channel from Alice to Bob and Eve. In addition to the privacy goals of oblivious transfer between Alice…

Information Theory · Computer Science 2016-11-17 Manoj Mishra , Bikash Kumar Dey , Vinod M. Prabhakaran , Suhas Diggavi

We present a new simulation-secure quantum oblivious transfer (QOT) protocol based on one-way functions in the plain model. With a focus on practical implementation, our protocol surpasses prior works in efficiency, promising feasible…

In this paper, we study the problem of the 1-of-2 string oblivious transfer (OT) between Alice and Bob in the presence of a passive eavesdropper Eve. The eavesdropper Eve is not allowed to get any information about the private data of Alice…

Information Theory · Computer Science 2022-09-07 Tianyou Pei , Wei Kang , Nan Liu

This paper presents a new efficient protocol for k-out-of-n oblivious transfer which is a generalization of Parakh's 1-out-of-2 oblivious transfer protocol based on Diffie-Hellman key exchange. In the proposed protocol, the parties involved…

Cryptography and Security · Computer Science 2009-09-16 Ashwin Jain , C Hari

Oblivious transfer is considered as a cryptographic primitive task for quantum information processing over quantum network. Although it is possible with two servers, any existing protocol works only with classical messages. We propose…

Quantum Physics · Physics 2024-09-10 Masahito Hayashi , Seunghoan Song

The large spread of sensors and smart devices in urban infrastructures are motivating research in the area of Internet of Thing (IoT), to develop new services and improve citizens' quality of life. Sensors and smart devices generate large…

Cryptography and Security · Computer Science 2017-03-14 Moreno Ambrosin , Paolo Braca , Mauro Conti , Riccardo Lazzaretti

In the m-out-of-n oblivious transfer (OT) model, one party Alice sends n bits to another party Bob, Bob can get only m bits from the n bits. However, Alice cannot know which m bits Bob received. Y.Mu[MJV02]} and Naor[Naor01] presented…

Cryptography and Security · Computer Science 2007-05-23 Zhide Chen , Hong Zhu

Oblivious RAM protocols (ORAMs) allow a client to access data from an untrusted storage device without revealing the access patterns. Typically, the ORAM adversary can observe both read and write accesses. Write-only ORAMs target a more…

Cryptography and Security · Computer Science 2019-08-20 Anrin Chakraborti , Radu Sion

Workflow and serverless frameworks have empowered new approaches to distributed application design by abstracting compute resources. However, their typically limited or one-size-fits-all support for advanced data flow patterns leaves…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-12-03 J. Gregory Pauloski , Valerie Hayot-Sasson , Logan Ward , Alexander Brace , André Bauer , Kyle Chard , Ian Foster

While Trusted Execution Environments provide a strong foundation for secure cloud computing, they remain vulnerable to access pattern leakages. Oblivious Maps (OMAPs) mitigate this by fully hiding access patterns but suffer from high…

Cryptography and Security · Computer Science 2025-09-10 Yitong Guo , Hongbo Chen , Haobin Hiroki Chen , Yukui Luo , XiaoFeng Wang , Chenghong Wang

As deep learning blooms with growing demand for computation and data resources, outsourcing model training to a powerful cloud server becomes an attractive alternative to training at a low-power and cost-effective end device. Traditional…

Machine Learning · Computer Science 2022-10-25 Junyuan Hong , Lingjuan Lyu , Jiayu Zhou , Michael Spranger

We present a device-independent protocol for oblivious transfer (DIOT) and analyze its security under the assumption that the receiver's quantum storage is bounded during protocol execution and that the device behaves independently and…

Quantum Physics · Physics 2023-09-11 Anne Broadbent , Peter Yuen

Oblivious inference enables the cloud to provide neural network inference-as-a-service (NN-IaaS), whilst neither disclosing the client data nor revealing the server's model. However, the privacy guarantee under oblivious inference usually…

Cryptography and Security · Computer Science 2021-07-13 Jun Wang , Chao Jin , Souhail Meftah , Khin Mi Mi Aung

Data obfuscation is a promising technique for mitigating attribute inference attacks by semi-trusted parties with access to time-series data emitted by sensors. Recent advances leverage conditional generative models together with…

Machine Learning · Computer Science 2025-12-16 Xin Yang , Omid Ardakanian

Many Internet-of-Things (IoT) devices rely on cloud computation resources to perform machine learning inferences. This is expensive and may raise privacy concerns for users. Consumers of these devices often have hardware such as gaming…

Cryptography and Security · Computer Science 2025-04-01 Han Zhang , Zifan Wang , Mihir Dhamankar , Matt Fredrikson , Yuvraj Agarwal

Trusted execution environment (TEE) has provided an isolated and secure environment for building cloud-based analytic systems, but it still suffers from access pattern leakages caused by side-channel attacks. To better secure the data,…

Cryptography and Security · Computer Science 2025-01-17 Yilei Wang , Xiangdong Zeng , Sheng Wang , Feifei Li

Cloud computing is a powerful and popular information technology paradigm that enables data service outsourcing and provides higher-level services with minimal management effort. However, it is still a key challenge to protect data privacy…

Quantum Physics · Physics 2024-05-14 Wenjie Liu , Peipei Gao , Zhihao Liu , Hanwu Chen , Maojun Zhang

The oblivious transfer primitive is sufficient to implement secure multiparty computation. However, secure multiparty computation based only on classical cryptography is severely limited by the security and efficiency of the oblivious…

Private Information Retrieval (PIR) allows a client to privately access a database without revealing which element is accessed. Initial PIR protocols based on Ring Learning with Errors (RLWE) demonstrated the practicality of PIR, but…

Cryptography and Security · Computer Science 2026-03-11 Rasoul Akhavan Mahdavi , Abdulrahman Diaa , Florian Kerschbaum
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