Results 31 to 40 of about 25,658,882 (194)

DSVN: A Flexible and Secure Data-Sharing Model for VANET Based on Blockchain

Applied Sciences, 2022
Vehicular Ad Hoc Network (VANET) is an important part of the modern intelligent transportation system, which can provide vehicle communication at a certain distance. More importantly, VANET can provide route planning and autonomous driving for drivers by
Xiaoxuan Chen, Yineng Chen, Xiayu Wang, Xinghui Zhu, Kui Fang   +4 more
doaj   +1 more source

Adaptable Ciphertext-Policy Attribute-Based Encryption

, 2014
In this paper, we introduce a new cryptographic primitive, called adaptable ciphertext-policy attribute-based encryption CP-ABE. Adaptable CP-ABE extends the traditional CP-ABE by allowing a semi-trusted proxy to modify a ciphertext under one access policy into ciphertexts of the same plaintext under any other access policies; the proxy, however ...
Junzuo Lai, Robert H. Deng, Yanjiang Yang, Jian Weng 0001   +3 more
openaire   +3 more sources

Ciphertext-Policy Attribute-Based Encryption and Re-Encryption [PDF]

, 2010
A ciphertext-policy attribute-based encryption system, comprising a re-encrypter (9) for cryptographically transforming a first ciphertext (CTp1) associated with a first access policy (P1) into a second ciphertext (CTP2) associated with a second access ...
Asim, Muhammad, Petkovic, M., Ibraimi, L.   +2 more
core   +1 more source

Ciphertext Policy Attribute Based Encryption for Arithmetic circuits [PDF]

, 2022
Applying access structure to encrypted sensitive data is one of the challenges in communication networks and cloud computing. Various methods have been proposed to achieve this goal, one of the most interesting of which is Attribute-Based Encryption (ABE)
Zahra Ahmadian, Mahdi Mahdavi Oliaee
core   +1 more source

An Enhanced Approach for CP-ABE with Proxy Re-encryption in IoT Paradigm

Jordanian Journal of Computers and Information Technology, 2022
In Internet of Things (IoT), encryption is a technique in which plaintext is converted to ciphertext to make it non-recovered by the attacker without secret key.
Nishant Doshi
doaj   +1 more source

Insecurity of A Key-Policy Attribute Based Encryption Scheme With Equality Test

IEEE Access, 2018
Attribute-based encryption is a popular cryptographic technology to protect the privacy of clients' data in cloud computing. In order to make the scheme have the functionality of comparing ciphertext, Zhu et al. combined concepts of key-policy attributed-
Yongjian Liao, Hongjie Chen, Fagen Li, Shaoquan Jiang, Shijie Zhou, Ramadan Mohammed   +5 more
doaj   +1 more source

A secured cloud‐medical data sharing with A‐BRSA and Salp ‐Ant Lion Optimisation Algorithm

CAAI Transactions on Intelligence Technology, EarlyView.
Abstract Sharing medical data among healthcare providers, researchers, and patients is crucial for efficient healthcare services. Cloud‐assisted smart healthcare (s‐healthcare) systems have made it easier to store EHRs effectively. However, the traditional encryption algorithms used to secure this data can be vulnerable to attacks if the encryption key
Adel Binbusayyis, Abed Alanazi, Shtwai Alsubai, Areej Alasiry, Mehrez Marzougui, Abdullah Alqahtani, Mohemmed Sha, Muhammad Aslam   +7 more
wiley   +1 more source

Outsourced ciphertext-policy attribute-based encryption with partial policy hidden

International Journal of Distributed Sensor Networks, 2020
Attribute-based encryption is an efficient and flexible fine-grained access control scheme. However, how to realize the attribute privacy concerns in the access policy and optimize the heavy computing overhead have been not adequately addressed.
Jinxia Yu, Guanghui He, Xixi Yan, Yongli Tang, Rongxia Qin   +4 more
doaj   +1 more source

Secure Decentralized Key Relaying via Random Walks in Dynamic Semi‐Trusted QKD Networks

Advanced Quantum Technologies, Volume 9, Issue 8, August 2026.
Quantum Key Distribution (QKD) provides point‐to‐point, information‐theoretically secure session keys, but distance limitations require trusted relays between remote parties. Can quantum keys be relayed without trusting every intermediate node or depending on a central controller?
Sergejs Kozlovičs, Krišjānis Petručeņa, Elina Kalnina, Juris Viksna   +3 more
wiley   +1 more source

PT-CPABKS – Secure Multi-User Keyword Search in Cloud Using Policy-Tiered CP-ABE with Optimized Indexing

Cybernetics and Information Technologies
Cloud computing faces several challenges in balancing data confidentiality with efficient retrieval and fine-grained access control. Conventional searchable encryption models enable keyword search but lack fine-grained access control, whereas traditional
Dhulipudi Naga Swetha, Savadam Balaji, Savadam Sai Anuraghav   +2 more
doaj   +1 more source