Results 171 to 180 of about 5,213 (200)

Deploying parallelised ciphertext-policy attributed-based encryption in clouds

International Journal of Computational Science and Engineering, 2018
In recent years, cloud storage has become an attractive solution due to its elasticity, availability and scalability. However, the security issue has started to prevent public clouds becoming more popular. Traditional encryption algorithms (both symmetric and asymmetric ones) fail to support achieving effective secure cloud storage due to severe issues
Wenjie Fan, Lifeng Li, Xiaowan Chen, Hai Jiang 0003, Zhongwen Li, Kuan-Ching Li   +5 more
openaire   +1 more source

Ciphertext-Policy Attribute-Based Delay Encryption

International Journal of Information and Computer Security, 2022
Lijiao Chen, Kewei Lv
openaire   +1 more source

Outsourced Ciphertext-Policy Attribute-Based Encryption with Equality Test

2019
In the cloud era people get used to store their data to the cloud server, and would use encryption technique to protect their sensitive data from leakage. However, encrypted data management is a challenging problem, for example, encrypted data classification.
Yuzhao Cui, Qiong Huang 0001, Jianye Huang 0001, Hongbo Li 0004, Guomin Yang   +4 more
openaire   +2 more sources

A Provably Secure Ciphertext-Policy Hierarchical Attribute-Based Encryption

2015
With the booming growth of network technology, the problems of information disclosure are becoming more and more serious. The attribute-based encryption has been one of hotspots for the advantage of fine-grained access control. In this paper, a provably secure ciphertext-policy hierarchical attribute-based encryption is proposed, which can satisfy the ...
Ziying Wang, Jian Wang 0038
openaire   +1 more source

New Ciphertext-Policy Attribute-Based Encryption with Efficient Revocation

2014 IEEE International Conference on Computer and Information Technology, 2014
Attribute-based encryption (ABE) is getting popular for its fine-grained access control in cloud computing. However, dynamic user or attribute revocation is a challenge in original ABE schemes. To address this issue, a new cipher text-policy ABE scheme with efficient revocation is proposed.
Longhui Zu, Zhenhua Liu, Juanjuan Li
openaire   +1 more source

Short CCA-Secure Ciphertext-Policy Attribute-Based Encryption

2017 IEEE International Conference on Smart Computing (SMARTCOMP), 2017
We propose a technique of individually modifying an attribute-based encryption scheme (ABE) secure against chosen-plaintext attacks (CPA) into an ABE scheme secure against chosen- ciphertext attacks (CCA) in the standard model. We demonstrate the technique in the case of the Waters ciphertext-policy ABE (CP-ABE).
Hiroaki Anada, Seiko Arita
openaire   +2 more sources

Multi-authority ciphertext-policy attribute-based encryption with accountability

Proceedings of the 6th ACM Symposium on Information, Computer and Communications Security, 2011
Attribute-based encryption (ABE) is a promising tool for implementing fine-grained cryptographic access control. Very recently, motivated by reducing the trust assumption on the authority, and enhancing the privacy of users, a multiple-authority key-policy ABE system, together with a semi-generic anonymous key-issuing protocol, have been proposed by ...
Jin Li 0002, Qiong Huang 0001, Xiaofeng Chen 0001, Sherman S. M. Chow, Duncan S. Wong, Dongqing Xie   +5 more
openaire   +1 more source

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

2015
To ensure the security of sensitive data, people need to encrypt them before uploading them to the public storage. Attribute-based encryption (ABE) is a promising cryptographic primitive for fine-grained sharing of encrypted data. However, ABE lacks user and authority accountability. The user can share his/her secret key without being identified, while
Xing Zhang 0002, Cancan Jin, Cong Li 0024, Zilong Wen, Qingni Shen, Yuejian Fang, Zhonghai Wu   +6 more
openaire   +1 more source

Efficient Ciphertext-Policy Attribute Based Encryption with Hidden Policy

2012
In an anonymous ciphertext-policy attribute-based encryption (CP-ABE) scheme, the encryptor-specified access structure is hidden in ciphertexts. The decryptor gets his secret key from a trust authority according to his attributes. However, he cannot decrypt any ciphertext or guess even what access structure was specified by the encryptor if his ...
Xiaohui Li, Dawu Gu, Yanli Ren, Ning Ding 0001, Kan Yuan   +4 more
openaire   +1 more source

Ciphertext-Policy Attribute Based Encryption with Large Attribute Universe

2016
Ciphertext-policy attribute-based encryption(CP-ABE) has become a crucial technical for cloud computing in that it enables one to share data with users under the access policy defined by himself. Generally, the universe of attributes is not fixed before the system setup in practice.
Siyu Xiao, Aijun Ge 0001, Fushan Wei, Chuangui Ma   +3 more
openaire   +1 more source