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As Lightning network payments are neither broadcasted nor publicly stored. Thus LN has been seen not only as scalability but also as privacy solution for Bitcoin. The protocol guarantees that only the latest channel state can be confirmed…

Cryptography and Security · Computer Science 2020-04-02 Sergei Tikhomirov , Rene Pickhardt , Alex Biryukov , Mariusz Nowostawski

Development of information technology, especially in the field of computer network allows the exchange of information faster and more complex and the data that is exchanged can vary. Security of data on communication in the network is a…

Cryptography and Security · Computer Science 2015-08-25 Heru Pranata , Leon Andretti Abdillah , Usman Ependi

Tor, a widely utilized privacy network, enables anonymous communication but is vulnerable to flow correlation attacks that deanonymize users by correlating traffic patterns from Tor's ingress and egress segments. Various defenses have been…

Cryptography and Security · Computer Science 2025-10-21 Minjae Seo , Myoungsung You , Jaehan Kim , Taejune Park , Seungwon Shin , Jinwoo Kim

Decentralized optimization is increasingly popular in machine learning for its scalability and efficiency. Intuitively, it should also provide better privacy guarantees, as nodes only observe the messages sent by their neighbors in the…

Cryptography and Security · Computer Science 2024-06-12 Edwige Cyffers , Mathieu Even , Aurélien Bellet , Laurent Massoulié

Recently, the privacy guarantees of information dissemination protocols have attracted increasing research interests, among which the gossip protocols assume vital importance in various information exchange applications. In this work, we…

Cryptography and Security · Computer Science 2021-02-08 Richeng Jin , Yufan Huang , Huaiyu Dai

Distributed data sharing in dynamic networks is ubiquitous. It raises the concern that the private information of dynamic networks could be leaked when data receivers are malicious or communication channels are insecure. In this paper, we…

Optimization and Control · Mathematics 2019-12-18 Yang Lu , Minghui Zhu

Internet traffic classification has become more important with rapid growth of current Internet network and online applications. There have been numerous studies on this topic which have led to many different approaches. Most of these…

Anonymous communication networks have emerged as crucial tools for obfuscating communication pathways and concealing user identities. However, their practical deployments face significant challenges, including susceptibility to artificial…

Cryptography and Security · Computer Science 2025-08-05 Chao Ge , Wei Yuan , Ge Chen , Yanbin Pan , Yuan Shen

Differential privacy is effective in sharing information and preserving privacy with a strong guarantee. As social network analysis has been extensively adopted in many applications, it opens a new arena for the application of differential…

Social and Information Networks · Computer Science 2021-04-16 Honglu Jiang , Jian Pei , Dongxiao Yu , Jiguo Yu , Bei Gong , Xiuzhen Cheng

Smart meter devices enable a better understanding of the demand at the potential risk of private information leakage. One promising solution to mitigating such risk is to inject noises into the meter data to achieve a certain level of…

Cryptography and Security · Computer Science 2020-11-13 Haoxiang Wang , Jiasheng Zhang , Chenbei Lu , Chenye Wu

Network Function Virtualisation (NFV) advances the adoption of composable software middleboxes. Accordingly, cloud data centres become major NFV vendors for enterprise traffic processing. Due to the privacy concern of traffic redirection to…

Cryptography and Security · Computer Science 2021-03-23 Shangqi Lai , Xingliang Yuan , Shi-Feng Sun , Joseph K. Liu , Ron Steinfeld , Amin Sakzad , Dongxi Liu

The literature on data sanitization aims to design algorithms that take an input dataset and produce a privacy-preserving version of it, that captures some of its statistical properties. In this note we study this question from a streaming…

Data Structures and Algorithms · Computer Science 2021-11-30 Haim Kaplan , Uri Stemmer

We consider a database $\vec{X} = (X_1,\cdots,X_n)$ containing the data of $n$ users. The data aggregator wants to publicise the database, but wishes to sanitise the dataset to hide sensitive data $S_i$ correlated to $X_i$. This setting is…

Cryptography and Security · Computer Science 2020-03-10 Milan Lopuhaä-Zwakenberg

The exponential growth of data collection necessitates robust privacy protections that preserve data utility. We address information disclosure against adversaries with bounded prior knowledge, modeled by an entropy constraint $H(X) \geq…

Cryptography and Security · Computer Science 2026-03-27 Genqiang Wu , Xiaoying Zhang , Yu Qi , Hao Wang , Jikui Wang , Yeping He

Side-channel attacks that leak sensitive information through a computing device's interaction with its physical environment have proven to be a severe threat to devices' security, particularly when adversaries have unfettered physical…

Cryptography and Security · Computer Science 2021-06-15 Ileana Buhan , Lejla Batina , Yuval Yarom , Patrick Schaumont

Data privacy is an important concern in learning, when datasets contain sensitive information about individuals. This paper considers consensus-based distributed optimization under data privacy constraints. Consensus-based optimization…

Machine Learning · Computer Science 2019-03-20 Mehrdad Showkatbakhsh , Can Karakus , Suhas Diggavi

We consider the problem of private distributed multi-party multiplication. It is well-established that Shamir secret-sharing coding strategies can enable perfect information-theoretic privacy in distributed computation via the celebrated…

Information Theory · Computer Science 2025-01-20 Viveck R. Cadambe , Ateet Devulapalli , Haewon Jeong , Flavio P. Calmon

Differential privacy offers formal quantitative guarantees for algorithms over datasets, but it assumes attackers that know and can influence all but one record in the database. This assumption often vastly overapproximates the attackers'…

Cryptography and Security · Computer Science 2020-12-01 Damien Desfontaines , Esfandiar Mohammadi , Elisabeth Krahmer , David Basin

For the modeling, design and planning of future energy transmission networks, it is vital for stakeholders to access faithful and useful power flow data, while provably maintaining the privacy of business confidentiality of service…

Cryptography and Security · Computer Science 2021-03-29 David Smith , Frederik Geth , Elliott Vercoe , Andrew Feutrill , Ming Ding , Jonathan Chan , James Foster , Thierry Rakotoarivelo

Privacy protection in medical data is a legitimate obstacle for centralized machine learning applications. Here, we propose a client-server image segmentation system which allows for the analysis of multi-centric medical images while…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Bach Kim , Jose Dolz , Pierre-Marc Jodoin , Christian Desrosiers