Ciphertext-Policy Attribute-Based Encryption with User and Authority Accountability

2015 ◽  
pp. 500-518 ◽  
Author(s):  
Xing Zhang ◽  
Cancan Jin ◽  
Cong Li ◽  
Zilong Wen ◽  
Qingni Shen ◽  
...  
Keyword(s):  
Attribute Based Encryption ◽  
Ciphertext Policy

An Efficient Ciphertext-Policy Weighted Attribute-Based Encryption for the Internet of Health Things

2021 ◽  
pp. 1-1
Author(s):  
Hang Li ◽  
Keping Yu ◽  
Bin Liu ◽  
Chaosheng Feng ◽  
Zhiguang Qin ◽  
...  
Keyword(s):  
The Internet ◽  
Attribute Based Encryption ◽  
Ciphertext Policy

scholarly journals Updatable Ciphertext-Policy Attribute-Based Encryption Scheme With Traceability and Revocability

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 66832-66844 ◽  
Author(s):  
Zhenhua Liu ◽  
Jing Xu ◽  
Yan Liu ◽  
Baocang Wang
Keyword(s):  
Encryption Scheme ◽  
Attribute Based Encryption ◽  
Ciphertext Policy

scholarly journals Ciphertext-policy attribute-based encryption with hidden sensitive policy from keyword search techniques in smart city

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Fei Meng ◽  
Leixiao Cheng ◽  
Mingqiang Wang
Keyword(s):  
Smart City ◽  
Keyword Search ◽  
Sensitive Information ◽  
Security Model ◽  
Computational Overhead ◽  
Diffie Hellman ◽  
Attribute Based Encryption ◽  
Iot Devices ◽  
Ciphertext Policy ◽  
Access Policies

AbstractCountless data generated in Smart city may contain private and sensitive information and should be protected from unauthorized users. The data can be encrypted by Attribute-based encryption (CP-ABE), which allows encrypter to specify access policies in the ciphertext. But, traditional CP-ABE schemes are limited because of two shortages: the access policy is public i.e., privacy exposed; the decryption time is linear with the complexity of policy, i.e., huge computational overheads. In this work, we introduce a novel method to protect the privacy of CP-ABE scheme by keyword search (KS) techniques. In detail, we define a new security model called chosen sensitive policy security: two access policies embedded in the ciphertext, one is public and the other is sensitive and hidden. If user's attributes don't satisfy the public policy, he/she cannot get any information (attribute name and its values) of the hidden one. Previous CP-ABE schemes with hidden policy only work on the “AND-gate” access structure or their ciphertext size or decryption time maybe super-polynomial. Our scheme is more expressive and compact. Since, IoT devices spread all over the smart city, so the computational overhead of encryption and decryption can be shifted to third parties. Therefore, our scheme is more applicable to resource-constrained users. We prove our scheme to be selective secure under the decisional bilinear Diffie-Hellman (DBDH) assumption.

White-Box Traceable Ciphertext-Policy Attribute-Based Encryption Supporting Flexible Attributes

2015 ◽  
Vol 10 (6) ◽  
pp. 1274-1288 ◽  
Author(s):  
Jianting Ning ◽  
Xiaolei Dong ◽  
Zhenfu Cao ◽  
Lifei Wei ◽  
Xiaodong Lin
Keyword(s):  
Attribute Based Encryption ◽  
Ciphertext Policy

Efficient revocation in ciphertext-policy attribute-based encryption based cryptographic cloud storage

2013 ◽  
Vol 14 (2) ◽  
pp. 85-97 ◽  
Author(s):  
Yong Cheng ◽  
Zhi-ying Wang ◽  
Jun Ma ◽  
Jiang-jiang Wu ◽  
Song-zhu Mei ◽  
...  
Keyword(s):  
Cloud Storage ◽  
Attribute Based Encryption ◽  
Ciphertext Policy
Sign in / Sign up

Export Citation Format

Share Document