162 citations · 883 across the 43 of their papers we have counts for
13 papers · 1 filter
Generating Searchable Public-Key Ciphertexts with Hidden Structures for Fast Keyword Search
P. Xu, Q. Wu, W. Wang +3
Existing semantically secure public-key searchable encryption schemes take search time linear with the total number of the ciphertexts. This makes retrieval from large-scale databa…
Flexible Attribute-Based Encryption Applicable to Secure E-Healthcare Records
Bo Qin, Hua Deng, Qianhong Wu +3
In e-healthcare record systems (EHRS), attribute-based encryption (ABE) appears as a natural way to achieve fine-grained access control on health records. Some proposals exploit ke…
From t-closeness to differential privacy and vice versa in data anonymization
J. Domingo-Ferrer, J. Soria-Comas
k-Anonymity and ε-differential privacy are two mainstream privacy models, the former introduced to anonymize data sets and the latter to limit the knowledge gain that results from…
Privacy by design in big data: An overview of privacy enhancing technologies in the era of big data analytics
Giuseppe D'Acquisto, Josep Domingo-Ferrer, Panayiotis Kikiras +3
The extensive collection and processing of personal information in big data analytics has given rise to serious privacy concerns, related to wide scale electronic surveillance, pro…
Utility-Preserving Differentially Private Data Releases Via Individual Ranking Microaggregation
David Sánchez, Josep Domingo-Ferrer, Sergio Martínez +1
Being able to release and exploit open data gathered in information systems is crucial for researchers, enterprises and the overall society. Yet, these data must be anonymized befo…
t-Closeness through Microaggregation: Strict Privacy with Enhanced Utility Preservation
Jordi Soria-Comas, Josep Domingo-Ferrer, David Sánchez +1
Microaggregation is a technique for disclosure limitation aimed at protecting the privacy of data subjects in microdata releases. It has been used as an alternative to generalizati…
Supplementary Materials for "How to Avoid Reidentification with Proper Anonymization"- Comment on "Unique in the shopping mall: on the reidentifiability of credit card metadata"
David Sánchez, Sergio Martínez, Josep Domingo-Ferrer
The study by De Montjoye et al. ("Science", 30 January 2015, p. 536) claimed that most individuals can be reidentified from a deidentified credit card transaction database and that…
On the Security of Privacy-Preserving Vehicular Communication Authentication with Hierarchical Aggregation and Fast Response
Lei Zhang, Chuanyan Hu, Qianhong Wu +2
In [3], the authors proposed a highly efficient secure and privacy-preserving scheme for secure vehicular communications. The proposed scheme consists of four protocols: system set…
On the Security of MTA-OTIBASs (Multiple-TA One-Time Identity-Based Aggregate Signatures)
Lei Zhang, Qianhong Wu, Josep Domingo-Ferrer +2
In [3] the authors proposed a new aggregate signature scheme referred to as multiple-TA (trusted authority) one-time identity-based aggregate signature (MTA-OTIBAS). Further, they…
Co-Utility: Self-Enforcing Protocols without Coordination Mechanisms
Josep Domingo-Ferrer, Jordi Soria-Comas, Oana Ciobotaru
Performing some task among a set of agents requires the use of some protocol that regulates the interactions between them. If those agents are rational, they may try to subvert the…
Flexible and Robust Privacy-Preserving Implicit Authentication
Josep Domingo-Ferrer, Qianhong Wu, Alberto Blanco-Justicia
Implicit authentication consists of a server authenticating a user based on the user's usage profile, instead of/in addition to relying on something the user explicitly knows (pass…
New Directions in Anonymization: Permutation Paradigm, Verifiability by Subjects and Intruders, Transparency to Users
Josep Domingo-Ferrer, Krishnamurty Muralidhar
There are currently two approaches to anonymization: "utility first" (use an anonymization method with suitable utility features, then empirically evaluate the disclosure risk and,…
The top quark forward-backward asymmetry at approximate NLO
Nikolaos Kidonakis
I calculate the top quark forward-backward asymmetry at the Tevatron in both the laboratory frame and the rest frame. I show that soft-gluon corrections are the dominan…