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Semantic communication (SemCom) significantly improves inter-vehicle interactions in intelligent connected vehicles (ICVs) within limited wireless spectrum. However, the open nature of wireless communications introduces eavesdropping risks.…

Cryptography and Security · Computer Science 2025-02-25 Bizhu Wang , Zhiqiang Bian , Yue Chen , Xiaodong Xu , Chen Sun , Wenqi Zhang , Ping Zhang

Despite Federated Learning (FL) employing gradient aggregation at the server for distributed training to prevent the privacy leakage of raw data, private information can still be divulged through the analysis of uploaded gradients from…

Machine Learning · Computer Science 2025-05-09 Tianzhe Xiao , Yichen Li , Yu Zhou , Yining Qi , Yi Liu , Wei Wang , Haozhao Wang , Yi Wang , Ruixuan Li

In decentralized personal data ecosystems grounded in architectures such as Solid, users retain sovereignty over their data via personal online data stores (pods), hosted on Solid-compliant server infrastructures. In such environments, data…

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…

Cryptography and Security · Computer Science 2019-11-27 Royce J Wilson , Celia Yuxin Zhang , William Lam , Damien Desfontaines , Daniel Simmons-Marengo , Bryant Gipson

Text embeddings enable numerous NLP applications but face severe privacy risks from embedding inversion attacks, which can expose sensitive attributes or reconstruct raw text. Existing differential privacy defenses assume uniform…

Cryptography and Security · Computer Science 2026-02-10 Yu-Che Tsai , Hsiang Hsiao , Kuan-Yu Chen , Shou-De Lin

In this paper, we address the problem of efficiently answering predicate queries on encrypted databases, those secured by Trusted Execution Environments (TEEs), which enable untrusted providers to process encrypted user data without…

Databases · Computer Science 2024-10-29 Jianzhang Du , Tilak Mudgal , Rutvi Rahul Gadre , Yukui Luo , Chenghong Wang

Privacy-preserving machine learning (PPML) is an emerging topic to handle secure machine learning inference over sensitive data in untrusted environments. Fully homomorphic encryption (FHE) enables computation directly on encrypted data on…

Cryptography and Security · Computer Science 2025-10-24 Yu Hin Chan , Hao Yang , Shiyu Shen , Xingyu Fan , Shengzhe Lyu , Patrick S. Y. Hung , Ray C. C. Cheung

Important document are being kept encrypted in remote servers. In order to retrieve these encrypted data, efficient search methods needed to enable the retrieval of the document without knowing the content of the documents In this paper a…

Cryptography and Security · Computer Science 2009-09-15 Maisa Halloush , Mai Sharif

We study secure and privacy-preserving data analysis based on queries executed on samples from a dataset. Trusted execution environments (TEEs) can be used to protect the content of the data during query computation, while supporting…

Cryptography and Security · Computer Science 2020-09-30 Sajin Sasy , Olga Ohrimenko

In the last decade, data-driven algorithms outperformed traditional optimization-based algorithms in many research areas, such as computer vision, natural language processing, etc. However, extensive data usages bring a new challenge or…

Machine Learning · Computer Science 2021-12-02 Shih-Chun Lin , Chia-Hung Lin

The last decade has witnessed a tremendous growth of service computing, while efficient service recommendation methods are desired to recommend high-quality services to users. It is well known that collaborative filtering is one of the most…

Information Retrieval · Computer Science 2024-08-29 Lina Wang , Huan Yang , Yiran Shen , Chao Liu , Lianyong Qi , Xiuzhen Cheng , Feng Li

Cross-silo federated learning (FL) enables multiple clients to collaboratively train a machine learning model without sharing training data, but privacy in FL remains a major challenge. Techniques using homomorphic encryption (HE) have been…

Cryptography and Security · Computer Science 2023-05-16 Jiahui Wu , Weizhe Zhang , Fucai Luo

Data is the central asset of today's dynamically operating organization and their business. This data is usually stored in database. A major consideration is applied on the security of that data from the unauthorized access and intruders.…

Databases · Computer Science 2013-08-25 Manish Sharma , Atul Chaudhary , Santosh Kumar

The privacy-preserving federated learning schemes based on the setting of two honest-but-curious and non-colluding servers offer promising solutions in terms of security and efficiency. However, our investigation reveals that these schemes…

Cryptography and Security · Computer Science 2025-07-31 Jiahui Wu , Fucai Luo , Tiecheng Sun , Haiyan Wang , Weizhe Zhang

The search engine process is crucial for document content retrieval. For Khmer documents, an effective tool is needed to extract essential keywords and facilitate accurate searches. Despite the daily generation of significant Khmer content,…

Information Retrieval · Computer Science 2024-06-18 Nimol Thuon

Clustering is an important tool for data exploration where the goal is to subdivide a data set into disjoint clusters that fit well into the underlying data structure. When dealing with sensitive data, privacy-preserving algorithms aim to…

Cryptography and Security · Computer Science 2024-08-21 Johannes Liebenow , Yara Schütt , Tanya Braun , Marcel Gehrke , Florian Thaeter , Esfandiar Mohammadi

Private information retrieval (PIR) is a database query protocol that provides user privacy, in that the user can learn a particular entry of the database of his interest but his query would be hidden from the data centre. Symmetric private…

Quantum Physics · Physics 2021-01-19 Wen Yu Kon , Charles Ci Wen Lim

The emergence of cloud computing provides a new computing paradigm for users -- massive and complex computing tasks can be outsourced to cloud servers. However, the privacy issues also follow. Fully homomorphic encryption shows great…

Cryptography and Security · Computer Science 2021-04-01 Lizhi Xiong , Wenhao Zhou , Zhihua Xia , Qi Gu , Jian Weng

Ciphertexts of an order-preserving encryption (OPE) scheme preserve the order of their corresponding plaintexts. However, OPEs are vulnerable to inference attacks that exploit this preserved order. At another end, differential privacy has…

Cryptography and Security · Computer Science 2022-09-19 Amrita Roy Chowdhury , Bolin Ding , Somesh Jha , Weiran Liu , Jingren Zhou

In this paper a homomorphic privacy preserving association rule mining algorithm is proposed which can be deployed in resource constrained devices (RCD). Privacy preserved exchange of counts of itemsets among distributed mining sites is a…

Cryptography and Security · Computer Science 2010-05-07 Md. Golam Kaosar , Xun Yi