Roman Vitenberg
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View article: zkToken: Empowering Holders to Limit Revocation Checks for Verifiable Credentials
zkToken: Empowering Holders to Limit Revocation Checks for Verifiable Credentials Open
Systems managing Verifiable Credentials are becoming increasingly popular. Unfortunately, their support for revoking previously issued credentials allows verifiers to effectively monitor the validity of the credentials, which is sensitive …
View article: On Replacing Cryptopuzzles with Useful Computation in Blockchain Proof-of-Work Protocols
On Replacing Cryptopuzzles with Useful Computation in Blockchain Proof-of-Work Protocols Open
Proof-of-Work (PoW) blockchains have emerged as a robust and effective consensus mechanism in open environments, leading to widespread deployment with numerous cryptocurrency platforms and substantial investments. However, the commonly dep…
Enhancing Planning-Based Adaptation Middleware with Support for Dependability: a Case Study Open
Recent evolutions of mobile devices have opened up for new opportunities for building advanced mobile applications. In particular, these applications are capable of discovering and exploiting software and hardware resources that are made a…
Compass: A Decentralized Scheduler for Latency-Sensitive ML Workflows Open
We consider ML query processing in distributed systems where GPU-enabled workers coordinate to execute complex queries: a computing style often seen in applications that interact with users in support of image processing and natural langua…
A Discussion about Computational Challenges of Programmable Money in Blockchain-based CBDCs Open
This article discusses the implementation of programmable money on DLT-based CBDCs. After briefly introducing what programmable money is, we enumerate some initiatives worldwide and discuss the critical steps for implementation. We look at…
View article: Privacy-preserving transactive energy systems: Key topics and open research challenges
Privacy-preserving transactive energy systems: Key topics and open research challenges Open
This manuscript aims to formalize and conclude the discussions initiated during the PriTEM workshop 22-23 March 2023. We present important ideas and discussion topics in the context of transactive energy systems. Moreover, the conclusions …
View article: Keep Your Friends Close: Leveraging Affinity Groups to Accelerate AI Inference Workflows
Keep Your Friends Close: Leveraging Affinity Groups to Accelerate AI Inference Workflows Open
AI inference workflows are typically structured as a pipeline or graph of AI programs triggered by events. As events occur, the AIs perform inference or classification tasks under time pressure to respond or take some action. Standard tech…
View article: Cascade: A Platform for Delay-Sensitive Edge Intelligence
Cascade: A Platform for Delay-Sensitive Edge Intelligence Open
Interactive intelligent computing applications are increasingly prevalent, creating a need for AI/ML platforms optimized to reduce per-event latency while maintaining high throughput and efficient resource management. Yet many intelligent …
View article: Tracking Decisions about Granting Access to Health Data: Application Analysis and Requirements
Tracking Decisions about Granting Access to Health Data: Application Analysis and Requirements Open
Medical research often requires access to sensitive personal health data. According to GDPR, such access is only possible under certain legal bases, such as consent. Verifiable and secure management of health data access is thus essential …
A Survey on Blockchain for Healthcare: Challenges, Benefits, and Future Directions Open
Continuously generated volumes of health data make healthcare a data-intensive domain. This data needs to be collected, stored, and shared among different healthcare actors for various purposes, such as reporting, analysis, collaborative r…
Understanding blockchain: definitions, architecture, design, and system comparison Open
The explosive advent of the blockchain technology has led to hundreds of blockchain systems in the industry, thousands of academic papers published over the last few years, and an even larger number of new initiatives and projects. Despite…
A general and configurable framework for blockchain-based marketplaces Open
The first generation of blockchain focused on digital currencies and secure storage, management and transfer of tokenized values. Thereafter, the focus has been shifting from currencies to a broader application space. In this paper, we sys…
Privacy-Preserving Identification of Target Patients from Outsourced Patient Data Open
With the increasing affordability and availability of patient data, hospitals tend to outsource their data to cloud service providers (CSPs) for the purpose of storage and analytics. However, the concern of data privacy significantly limit…
A General and Configurable Framework for Blockchain-based Marketplaces Open
The first generation of blockchain focused on digital currencies and secure storage, management and transfer of tokenized values. Thereafter, the focus has been shifting from currencies to a broader application space. In this paper, we sys…
Privacy-Preserving Search for a Similar Genomic Makeup in the Cloud Open
In this paper, we attempt to provide a privacy-preserving and efficient solution for the "similar patient search" problem among several parties (e.g., hospitals) by addressing the shortcomings of previous attempts. We consider a scenario i…
A Privacy-Preserving Framework for Outsourcing Location-Based Services to the Cloud Open
Thanks to the popularity of mobile devices numerous location-based services (LBS) have emerged. While several privacy-preserving solutions for LBS have been proposed, most of these solutions do not consider the fact that LBS are typically …
A Cloud-Assisted Tree-Based P2P System for Low Latency Streaming Open
Live media streaming applications are increasingly popular, with services such as Twitch.tv and YouNow being used by millions of people. Deploying such services on the cloud can be very expensive, as the cost is proportional to the amount …
Self-Organizing Media Streaming for Many-to-many Interaction Open
In this research report we propose a self-organizing media streaming solution that supports multiple interacting participants as well as a large number of observers. This solution is aimed at a number of emerging multimedia applications ov…