Results 11 to 20 of about 5,213 (200)

On efficient ciphertext-policy attribute based encryption and broadcast encryption [PDF]

Proceedings of the 17th ACM conference on Computer and communications security, 2010
Existing CP-ABE schemes incur very large ciphertext size, which increases linearly with respect to the number of attributes in the access policy. Large ciphertext prevents CP-ABE from being adopted in the communication constrained environments. In this paper, we proposed a new construction of CP-ABE, named Constant-size CP-ABE (denoted as CCP-ABE) that
Zhibin Zhou 0001, Dijiang Huang
core   +4 more sources

An enhanced media ciphertext-policy attribute-based encryption algorithm on media cloud

International Journal of Distributed Sensor Networks, 2020
With the development of cloud computing, more and more video services are moving to the cloud. How to realize fine-grained access control of those data on cloud becomes an urgent problem. Attribute-based encryption provides a solution.
Hao Li, Lianbing Deng, Cheng Yang, Jianbo Liu   +3 more
doaj   +2 more sources

Blockchain-Enabled Privacy-Preserving Access Control for EHRs Sharing With Optimized User and Attribute Revocation

IET Information Security
Electronic health records (EHRs) have become a crucial application in cloud computing environments, necessitating advanced privacy-preserving access control mechanisms. Ciphertext policy attribute-based encryption (CP-ABE) is a widely recognized solution
Khanadech Worapaluk, Somchart Fugkeaw
doaj   +2 more sources

Ciphertext policy Attribute based Encryption with anonymous access policy

International Journal of Peer to Peer Networks, 2010
In Ciphertext Policy Attribute based Encryption scheme, the encryptor can fix the policy, who can decrypt the encrypted message. The policy can be formed with the help of attributes. In CP-ABE, access policy is sent along with the ciphertext. We propose a method in which the access policy need not be sent along with the ciphertext, by which we are able
A.Balu, K.Kuppusamy
openaire   +6 more sources

Provably Secure Ciphertext-Policy Attribute-Based Encryption from Identity-Based Encryption [PDF]

Journal of Universal Computer Science, 2019
Ciphertext-policy attribute-based encryption (CP-ABE) is an access control mechanism where a data provider encrypts a secret message and then sends the ciphertext to the receivers according to the access policy which she/he decides.
Yi-Fan Tseng, Chun-I Fan, Chih-Wen Lin
doaj   +4 more sources

RLWE-based ciphertext-policy attribute proxy re-encryption [PDF]

Tongxin xuebao, 2018
To solve LWE-based proxy re-encryption schemes cannot achieve fine-grained access and low efficiency problem,a ciphertext-policy attribute-based proxy re-encryption scheme was proposed.The scheme based on linear secret sharing scheme,RLWE and attribute ...
En ZHANG, Yaoyao PEI, Jiao DU
doaj   +4 more sources

Unified Ciphertext-Policy Weighted Attribute-Based Encryption for Sharing Data in Cloud Computing [PDF]

Applied Sciences, 2018
With the rapid development of cloud computing, it is playing an increasingly important role in data sharing. Meanwhile, attribute-based encryption (ABE) has been an effective way to share data securely in cloud computing.
Wei Li, Wei Ni, Dongxi Liu, Ren Ping Liu, Shoushan Luo   +4 more
doaj   +2 more sources

Ciphertext-Policy Attribute-Based Broadcast Encryption with Small Keys [PDF]

, 2016
Broadcasting is a very efficient way to securely transmit information to a large set of geographically scattered receivers, and in practice, it is often the case that these receivers can be grouped in sets sharing common characteristics (or attributes). We describe in this paper an efficient ciphertext-policy attribute-based broadcast encryption scheme
Benjamin Wesolowski, Pascal Junod
openaire   +4 more sources

Black Box Traceable Ciphertext Policy Attribute-Based Encryption Scheme

Information, 2015
In the existing attribute-based encryption (ABE) scheme, the authority (i.e., private key generator (PKG)) is able to calculate and issue any user’s private key, which makes it completely trusted, which severely influences the applications of the ABE ...
Xingbing Fu, Xuyun Nie, Fagen Li
doaj   +2 more sources

Forward-secure ciphertext-policy attribute-based encryption scheme [PDF]

Tongxin xuebao, 2014
To mitigate the damage of key exposure in the context of ciphertext-policy attribute-based encryption (CP-ABE). The syntax and security model of forward-secure CP-ABE was presented. Then, a concreted forward-secure CP-ABE scheme was constructed.
EIJiang-hong W, IUWen-fen L, UXue-xian H
doaj   +4 more sources