1.1k citations · 2.1k across the 34 of their papers we have counts for
29 papers · 1 filter
A Systematic Security Analysis for Path-based Traceability Systems in RFID-Enabled Supply Chains
Fokke Heikamp, Lei Pan, Robin Doss +2
Traceability systems have become prevalent in supply chains because of the rapid development of RFID and IoT technologies. These systems facilitate product recall and mitigate prob…
SecureVAX: A Blockchain-Enabled Secure Vaccine Passport System
Debendranath Das, Sushmita Ruj, Subhamoy Maitra
A vaccine passport serves as documentary proof, providing passport holders with greater freedom while roaming around during pandemics. It confirms vaccination against certain infec…
SoK: Trusting Self-Sovereign Identity
Evan Krul, Hye-young Paik, Sushmita Ruj +1
Digital identity is evolving from centralized systems to a decentralized approach known as Self-Sovereign Identity (SSI). SSI empowers individuals to control their digital identiti…
OptimShare: A Unified Framework for Privacy Preserving Data Sharing -- Towards the Practical Utility of Data with Privacy
M. A. P. Chamikara, Seung Ick Jang, Ian Oppermann +9
Tabular data sharing serves as a common method for data exchange. However, sharing sensitive information without adequate privacy protection can compromise individual privacy. Thus…
FairShare: Blockchain Enabled Fair, Accountable and Secure Data Sharing for Industrial IoT
Jayasree Sengupta, Sushmita Ruj, Sipra Das Bit
Industrial Internet of Things (IIoT) opens up a challenging research area towards improving secure data sharing which currently has several limitations. Primarily, the lack of inbu…
SPRITE: A Scalable Privacy-Preserving and Verifiable Collaborative Learning for Industrial IoT
Jayasree Sengupta, Sushmita Ruj, Sipra Das Bit
Recently collaborative learning is widely applied to model sensitive data generated in Industrial IoT (IIoT). It enables a large number of devices to collectively train a global mo…
Strategic Analysis of Griefing Attack in Lightning Network
Subhra Mazumdar, Prabal Banerjee, Abhinandan Sinha +2
Hashed Timelock Contract (HTLC) in Lightning Network is susceptible to a griefing attack. An attacker can block several channels and stall payments by mounting this attack. A state…
DIMY: Enabling Privacy-preserving Contact Tracing
Nadeem Ahmed, Regio A. Michelin, Wanli Xue +4
The infection rate of COVID-19 and lack of an approved vaccine has forced governments and health authorities to adopt lockdowns, increased testing, and contact tracing to reduce th…
Reliable, Fair and Decentralized Marketplace for Content Sharing Using Blockchain
Prabal Banerjee, Chander Govindarajan, Praveen Jayachandran +1
Content sharing platforms such as Youtube and Vimeo have promoted pay per view models for artists to monetize their content. Yet, artists remain at the mercy of centralized platfor…
A Survey of COVID-19 Contact Tracing Apps
Nadeem Ahmed, Regio A. Michelin, Wanli Xue +7
The recent outbreak of COVID-19 has taken the world by surprise, forcing lockdowns and straining public health care systems. COVID-19 is known to be a highly infectious virus, and…
A Technical Look At The Indian Personal Data Protection Bill
Ram Govind Singh, Sushmita Ruj
The Indian Personal Data Protection Bill 2019 provides a legal framework for protecting personal data. It is modeled after the European Union's General Data Protection Regulation(G…
A Secure Fog Based Architecture for Industrial Internet of Things and Industry 4.0
Jayasree Sengupta, Sushmita Ruj, Sipra Das Bit
The advent of Industrial IoT (IIoT) along with Cloud computing has brought a huge paradigm shift in manufacturing industries resulting in yet another industrial revolution, Industr…
Griefing-Penalty: Countermeasure for Griefing Attack in Lightning Network
Subhra Mazumdar, Prabal Banerjee, Sushmita Ruj
Lightning Network can execute unlimited number of off-chain payments, without incurring the cost of recording each of them in the blockchain. However, conditional payments in such…
CryptoMaze: Privacy-Preserving Splitting of Off-Chain Payments
Subhra Mazumdar, Sushmita Ruj
Payment protocols developed to realize off-chain transactions in Payment channel network (PCN) assumes the underlying routing algorithm transfers the payment via a single path. How…
HushRelay: A Privacy-Preserving, Efficient, and Scalable Routing Algorithm for Off-Chain Payments
Subhra Mazumdar, Sushmita Ruj, Ram Govind Singh +1
Payment channel networks (PCN) are used in cryptocurrencies to enhance the performance and scalability of off-chain transactions. Except for opening and closing of a payment channe…
FSPVDsse: A Forward Secure Publicly Verifiable Dynamic SSE scheme
Laltu Sardar, Sushmita Ruj
A symmetric searchable encryption (SSE) scheme allows a client (data owner) to search on encrypted data outsourced to an untrusted cloud server. The search may either be a single k…
Cumulus: Blockchain-Enabled Privacy Preserving Data Audit in Cloud
Prabal Banerjee, Nishant Nikam, Subhra Mazumdar +1
Data owners upload large files to cloud storage servers, but malicious servers may potentially tamper data. To check integrity of remote data, Proof of Retrievability (PoR) schemes…
The Secure Link Prediction Problem
Laltu Sardar, Sushmita Ruj
Link Prediction is an important and well-studied problem for social networks. Given a snapshot of a graph, the link prediction problem predicts which new interactions between membe…
Blockchain Enabled Data Marketplace -- Design and Challenges
Prabal Banerjee, Sushmita Ruj
Data is of unprecedented importance today. The most valuable companies of today treat data as a commodity, which they trade and earn revenues. To facilitate such trading, data mark…
Design of Anonymous Endorsement System in Hyperledger Fabric
Subhra Mazumdar, Sushmita Ruj
Permissioned Blockchain has become quite popular with enterprises forming consortium since it prioritizes trust over privacy. One of the popular platforms for distributed ledger so…
An Efficient Secure Distributed Cloud Storage for Append-only Data
Binanda Sengupta, Nishant Nikam, Sushmita Ruj +2
Cloud computing enables users (clients) to outsource large volume of their data to cloud servers. Secure distributed cloud storage schemes ensure that multiple servers store these…
On the Economic Significance of Ransomware Campaigns: A Bitcoin Transactions Perspective
Mauro Conti, Ankit Gangwal, Sushmita Ruj
Bitcoin cryptocurrency system enables users to transact securely and pseudo-anonymously by using an arbitrary number of aliases (Bitcoin addresses). Cybercriminals exploit these ch…
Keyword-Based Delegable Proofs of Storage
Binanda Sengupta, Sushmita Ruj
Cloud users (clients) with limited storage capacity at their end can outsource bulk data to the cloud storage server. A client can later access her data by downloading the required…
Cloud Data Auditing Using Proofs of Retrievability
Binanda Sengupta, Sushmita Ruj
Cloud servers offer data outsourcing facility to their clients. A client outsources her data without having any copy at her end. Therefore, she needs a guarantee that her data are…