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On Anonymity of Group Signatures [PDF]

open access: yes, 2005
A secure group signature is required to be anonymous, that is, given two group signatures generated by two different members on the same message or two group signatures generated by the same member on two different messages, they are indistinguishable except for the group manager.
Sujing Zhou, Dongdai Lin
openaire   +2 more sources

SRCPR: SignReCrypting Proxy Re-Signature in Secure VANET Groups

open access: yesIEEE Access, 2018
Vehicular Ad hoc Network is an emerging area as a key component of the intelligent transport system. Despite the immense researches going on in this area, it is yet to be deployed at its full scale due to lack of trust, safety, and confidentiality in the
Sneha Kanchan, Narendra S. Chaudhari
doaj   +1 more source

Shared Dynamic Data Audit Supporting Anonymous User Revocation in Cloud Storage

open access: yesIEEE Access, 2019
Collusion between revoked users and cloud service providers can pose a threat to the security of cloud storage data. If the original legitimate users cannot be revoked securely, it will lead to the leakage of shared data, thus affecting the security of ...
Yinghui Zhang   +4 more
doaj   +1 more source

Unique Group Signatures [PDF]

open access: yes, 2012
We initiate the study of unique group signature such that signatures of the same message by the same user will always have a large common component (i.e., unique identifier). It enables an efficient detection algorithm, revealing the identities of illegal users, which is fundamentally different from previous primitives.
Matthew K. Franklin, Haibin Zhang
openaire   +2 more sources

Group-Signature and Group Session Key Combined Safety Message Authentication Protocol for VANETs

open access: yesIEEE Access, 2019
Anonymous authentication has significant contribution to privacy protection in safety message dissemination for Vehicular Ad Hoc Networks (VANETs); however, it suffers from heavy workload of vehicle revocation check and message signature verification ...
Chunhua Zhang   +4 more
doaj   +1 more source

Healthchain: A Privacy Protection System for Medical Data Based on Blockchain

open access: yesFuture Internet, 2021
Recently, with the great development of e-health, more and more countries have made certain achievements in the field of electronic medical treatment. The digitization of medical equipment and the structuralization of electronic medical records are the ...
Baocheng Wang, Zetao Li
doaj   +1 more source

AAAS: An Anonymous Authentication Scheme Based on Group Signature in VANETs

open access: yesIEEE Access, 2020
As special ad-hoc networks, vehicular ad-hoc networks (VANETs) support vehicles to communicate with each other via opportunistic wireless links. In order to protect privacy of drivers, vehicles registered in VANETs are required to authenticate and ...
Yanji Jiang, Shaocheng Ge, Xueli Shen
doaj   +1 more source

Privacy-Enhancing Group Signcryption Scheme

open access: yesIEEE Access, 2021
In the last decades, several signcryption schemes have been developed for different privacy-enhancing purposes. In this paper, we propose a new privacy-enhancing group signcryption scheme that provides: unforgeability, confidentiality, ciphertext and ...
Sara Ricci   +3 more
doaj   +1 more source

The Opening Capability for Security against Privacy Infringements in the Smart Grid Environment

open access: yesMathematics, 2018
It is now known that more information can be leaked into the smart grid environment than into the existing environment. In particular, specific information such as energy consumption data can be exposed via smart devices.
Sungwook Eom, Jun-Ho Huh
doaj   +1 more source

Efficient Conditional Privacy-Preserving Authentication Scheme for Safety Warning System in Edge-Assisted Internet of Things

open access: yesMathematics, 2023
With the advent of smart cities, the significance of the Internet of Things (IoT) is gaining greater prominence. At the same time, the safety early warning system in the IoT has a significant impact on real-time monitoring and the response to potential ...
Jianfeng Li   +5 more
doaj   +1 more source

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