PIUDI: Private Information Update for Distributed Infrastructure

Shubham Raj, Snehil Joshi, Kannan Srinathan

2023

Abstract

Encrypted data is susceptible to side-channel attacks like usage and access analysis. Techniques like Oblivious-RAM (ORAM) and privacy information retrieval and writing aim to hide clients’ access pattern while accessing encrypted data on a distrusted server. However, current techniques are constructed for a single server model making them unsuitable and inefficient for contemporary distributed architectures. In our work, we address this problem and provide a solution to private information update using packed secret sharing. Our protocol, named “Private Information Update for Distributed Infrastructure” PIUDI, aims to mitigate the attacks to which PIR-Writing protocols are more susceptible in a distributed environment. Our scheme is secure in presence of up to t + k − 1 compromised parties where k is the size of the data set. We also provide an analysis of our protocol for computational efficiency and gas cost in blockchains

Paper Citation

in Harvard Style

Raj S., Joshi S. and Srinathan K. (2023). PIUDI: Private Information Update for Distributed Infrastructure. In Proceedings of the 20th International Conference on Security and Cryptography - Volume 1: SECRYPT; ISBN 978-989-758-666-8, SciTePress, pages 425-432. DOI: 10.5220/0012087900003555

in Bibtex Style

@conference{secrypt23,
author={Shubham Raj and Snehil Joshi and Kannan Srinathan},
title={PIUDI: Private Information Update for Distributed Infrastructure},
booktitle={Proceedings of the 20th International Conference on Security and Cryptography - Volume 1: SECRYPT},
year={2023},
pages={425-432},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012087900003555},
isbn={978-989-758-666-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 20th International Conference on Security and Cryptography - Volume 1: SECRYPT
TI - PIUDI: Private Information Update for Distributed Infrastructure
SN - 978-989-758-666-8
AU - Raj S.
AU - Joshi S.
AU - Srinathan K.
PY - 2023
SP - 425
EP - 432
DO - 10.5220/0012087900003555
PB - SciTePress