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Since ML algorithms have proven their success in many different applications, there is also a big interest in privacy preserving (PP) ML methods for building models on sensitive data. Moreover, the increase in the number of data sources and…

机器学习 · 计算机科学 2024-10-17 Ali Burak Ünal , Nico Pfeifer , Mete Akgün

At present, the cloud storage used in searchable symmetric encryption schemes (SSE) is provided in a private way, which cannot be seen as a true cloud. Moreover, the cloud server is thought to be credible, because it always returns the…

密码学与安全 · 计算机科学 2017-11-21 Huige Li , Fangguo Zhang , Jiejie He , Haibo Tian

Despite increasing advancements in today's information exchange infrastructure, the preservation of user data and privacy still remains a problem. Both insecure baselines and secure solutions leak user data. For example, Certificate…

密码学与安全 · 计算机科学 2019-05-24 Vy-An Phan

In pervasive computing environments, Location- Based Services (LBSs) are becoming increasingly important due to continuous advances in mobile networks and positioning technologies. Nevertheless, the wide deployment of LBSs can jeopardize…

密码学与安全 · 计算机科学 2016-11-17 Lin Yao , Chi Lin , Xiangwei Kong , Feng Xia , Guowei Wu

With the prevalence of location-based services (LBSs) supported by advanced positioning technology, there is a dramatic increase in the transmission of high-precision personal geographical data. Malicious use of these sensitive data will…

密码学与安全 · 计算机科学 2017-03-03 Changsha Ma , Zhisheng Yan , Chang Wen Chen

While the security of the cloud remains a concern, a common practice is to encrypt data before outsourcing them for utilization. One key challenging issue is how to efficiently perform queries over the ciphertext. Conventional crypto-based…

密码学与安全 · 计算机科学 2019-12-19 Yaxing Chen , Qinghua Zheng , Dan Liu , Zheng Yan , Wenhai Sun , Ning Zhang , Wenjing Lou , Y. Thomas Hou

Differential privacy (DP) provides formal guarantees that the output of a database query does not reveal too much information about any individual present in the database. While many differentially private algorithms have been proposed in…

密码学与安全 · 计算机科学 2019-11-27 Royce J Wilson , Celia Yuxin Zhang , William Lam , Damien Desfontaines , Daniel Simmons-Marengo , Bryant Gipson

The well-known benefits of cloud computing have spurred the popularity of database service outsourcing, where one can resort to the cloud to conveniently store and query databases. Coming with such popular trend is the threat to data…

密码学与安全 · 计算机科学 2022-11-04 Yifeng Zheng , Weibo Wang , Songlei Wang , Xiaohua Jia , Hejiao Huang , Cong Wang

Cloud computing is emerging as a revolutionary computing paradigm, while security and privacy become major concerns in the cloud scenario. For which Searchable Encryption (SE) technology is proposed to support efficient retrieval of…

信息检索 · 计算机科学 2017-06-01 Ruihui Zhao , Yuanliang Sun , Mizuho Iwaihara

Dynamic searchable symmetric encryption (DSSE) enables a server to efficiently search and update over encrypted files. To minimize the leakage during updates, a security notion named forward and backward privacy is expected for newly…

密码学与安全 · 计算机科学 2023-09-14 Lei Xu , Leqian Zheng , Chengzhi Xu , Xingliang Yuan , Cong Wang

Iterative clustering algorithms help us to learn the insights behind the data. Unfortunately, this may allow adversaries to infer the privacy of individuals with some background knowledge. In the worst case, the adversaries know the…

密码学与安全 · 计算机科学 2022-04-05 Zhigang Lu , Hong Shen

Differential privacy offers a formal framework for reasoning about privacy and accuracy of computations on private data. It also offers a rich set of building blocks for constructing data analyses. When carefully calibrated, these analyses…

密码学与安全 · 计算机科学 2019-09-18 Elisabet Lobo-Vesga , Alejandro Russo , Marco Gaboardi

Monitoring location updates from mobile users has important applications in many areas, ranging from public safety and national security to social networks and advertising. However, sensitive information can be derived from movement…

密码学与安全 · 计算机科学 2020-08-31 Gabriel Ghinita , Kien Nguyen , Mihai Maruseac , Cyrus Shahabi

We consider the problem of person search in unconstrained scene images. Existing methods usually focus on improving the person detection accuracy to mitigate negative effects imposed by misalignment, mis-detections, and false alarms…

计算机视觉与模式识别 · 计算机科学 2018-07-24 Xu Lan , Xiatian Zhu , Shaogang Gong

The Domain Name System (DNS) is central to all Internet user activity, resolving accessed domain names into Internet Protocol (IP) addresses. As a result, curious DNS resolvers can learn everything about Internet users' interests. Public…

密码学与安全 · 计算机科学 2025-09-30 Philip Sjösvärd , Hongyu Jin , Panos Papadimitratos

Cloud computing has emerged as a corner stone of today's computing landscape. More and more customers who outsource their infrastructure benefit from the manageability, scalability and cost saving that come with cloud computing. Those…

密码学与安全 · 计算机科学 2022-05-13 Ferdinand Brasser , Patrick Jauernig , Frederik Pustelnik , Ahmad-Reza Sadeghi , Emmanuel Stapf

Cybersecurity is a very challenging topic of research nowadays, as digitalization increases the interaction of people, software and services on the Internet by means of technology devices and networks connected to it. The field is broad and…

人工智能 · 计算机科学 2021-07-02 Nuno Oliveira , Norberto Sousa , Isabel Praça

Contact tracing is paramount to fighting the pandemic but it comes with legitimate privacy concerns. This paper proposes a system enabling both, contact tracing and data privacy. We propose the use of the Intel SGX trusted execution…

计算机与社会 · 计算机科学 2020-06-26 David Sturzenegger , Aetienne Sardon , Stefan Deml , Thomas Hardjono

In modern computer systems, user processes are isolated from each other by the operating system and the hardware. Additionally, in a cloud scenario it is crucial that the hypervisor isolates tenants from other tenants that are co-located on…

密码学与安全 · 计算机科学 2019-05-23 Michael Schwarz , Samuel Weiser , Daniel Gruss , Clémentine Maurice , Stefan Mangard

A growing framework of legal and ethical requirements limit scientific and commercial evalua-tion of personal data. Typically, pseudonymization, encryption, or methods of distributed com-puting try to protect individual privacy. However,…

密码学与安全 · 计算机科学 2018-11-21 Nikolaus von Bomhard , Bernd Ahlborn , Catherine Mason , Ulrich Mansmann