Detecting Information Leakage in Updating XML Documents of Fine-Grained Access Control

2006 ◽  
pp. 286-296 ◽  
Author(s):  
Somchai Chatvichienchai ◽  
Mizuho Iwaihara
Keyword(s):  
Access Control ◽  
Information Leakage ◽  
Fine Grained ◽  
Xml Documents

A fine-grained access control system for XML documents

2002 ◽  
Vol 5 (2) ◽  
pp. 169-202 ◽  
Author(s):  
Ernesto Damiani ◽  
Sabrina De Capitani di Vimercati ◽  
Stefano Paraboschi ◽  
Pierangela Samarati
Keyword(s):  
Control System ◽  
Access Control ◽  
Fine Grained ◽  
Xml Documents ◽  
Access Control System

Fine-Grained Mandatory Query Access Control Model and Its Efficient Realization for Spatial Vector Data

2011 ◽  
Vol 22 (8) ◽  
pp. 1872-1883 ◽  
Author(s):  
Yan ZHANG ◽  
Chi CHEN ◽  
Deng-Guo FENG
Keyword(s):  
Access Control ◽  
Control Model ◽  
Vector Data ◽  
Access Control Model ◽  
Fine Grained ◽  
Efficient Realization

scholarly journals Privacy-Enhancing k-Nearest Neighbors Search over Mobile Social Networks

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 3994
Author(s):  
Yuxi Li ◽  
Fucai Zhou ◽  
Yue Ge ◽  
Zifeng Xu
Keyword(s):  
Social Networks ◽  
Access Control ◽  
Location Privacy ◽  
Nearest Neighbors ◽  
Search Pattern ◽  
Broadcast Encryption ◽  
Mobile Social Networks ◽  
K Nearest Neighbors ◽  
Fine Grained ◽  
Server Architecture

Focusing on the diversified demands of location privacy in mobile social networks (MSNs), we propose a privacy-enhancing k-nearest neighbors search scheme over MSNs. First, we construct a dual-server architecture that incorporates location privacy and fine-grained access control. Under the above architecture, we design a lightweight location encryption algorithm to achieve a minimal cost to the user. We also propose a location re-encryption protocol and an encrypted location search protocol based on secure multi-party computation and homomorphic encryption mechanism, which achieve accurate and secure k-nearest friends retrieval. Moreover, to satisfy fine-grained access control requirements, we propose a dynamic friends management mechanism based on public-key broadcast encryption. It enables users to grant/revoke others’ search right without updating their friends’ keys, realizing constant-time authentication. Security analysis shows that the proposed scheme satisfies adaptive L-semantic security and revocation security under a random oracle model. In terms of performance, compared with the related works with single server architecture, the proposed scheme reduces the leakage of the location information, search pattern and the user–server communication cost. Our results show that a decentralized and end-to-end encrypted k-nearest neighbors search over MSNs is not only possible in theory, but also feasible in real-world MSNs collaboration deployment with resource-constrained mobile devices and highly iterative location update demands.

A bitmap-based access control for restricted views of XML documents

2003 ◽  
Author(s):  
Abhilash Gummadi ◽  
Jong P. Yoon ◽  
Biren Shah ◽  
Vijay Raghavan
Keyword(s):  
Access Control ◽  
Xml Documents

Provenance-based Hierarchical Encryption for Fine-grained Access Control in Cloud Computing

2020 ◽  
Author(s):  
Xinyu Fan ◽  
Faen Zhang ◽  
Eminjan Turamat ◽  
Chao Tong ◽  
Jiahong Wu ◽  
...  
Keyword(s):  
Cloud Computing ◽  
Access Control ◽  
Fine Grained

A fine-grained access control and revocation scheme on clouds

2012 ◽  
Vol 28 (6) ◽  
pp. 1697-1714 ◽  
Author(s):  
Shan-shan Tu ◽  
Shao-zhang Niu ◽  
Hui Li
Keyword(s):  
Access Control ◽  
Fine Grained
Sign in / Sign up

Export Citation Format

Share Document