Blind attribute-based encryption and oblivious transfer with fine-grained access control

2015 ◽  
Vol 81 (2) ◽  
pp. 179-223 ◽  
Author(s):  
Alfredo Rial
Keyword(s):  
Access Control ◽  
Oblivious Transfer ◽  
Fine Grained ◽  
Attribute Based Encryption

scholarly journals Attribute Revocable Attribute-Based Encryption with Forward Secrecy for Fine-Grained Access Control of Shared Data

2017 ◽  
Vol E100.D (10) ◽  
pp. 2432-2439
Author(s):  
Yoshiaki SHIRAISHI ◽  
Kenta NOMURA ◽  
Masami MOHRI ◽  
Takeru NARUSE ◽  
Masakatu MORII
Keyword(s):  
Access Control ◽  
Forward Secrecy ◽  
Fine Grained ◽  
Shared Data ◽  
Attribute Based Encryption

Efficient Attribute-Based Data Sharing Scheme with Hidden Access Structures

2019 ◽  
Vol 62 (12) ◽  
pp. 1748-1760 ◽  
Author(s):  
Yang Chen ◽  
Wenmin Li ◽  
Fei Gao ◽  
Wei Yin ◽  
Kaitai Liang ◽  
...  
Keyword(s):  
Access Control ◽  
Data Sharing ◽  
Inner Product ◽  
Access Structure ◽  
Online Data ◽  
Fine Grained ◽  
Access Structures ◽  
Attribute Based Encryption ◽  
And Performance ◽  
Ciphertext Policy

AbstractOnline data sharing has become a research hotspot while cloud computing is getting more and more popular. As a promising encryption technique to guarantee the security shared data and to realize flexible fine-grained access control, ciphertext-policy attribute-based encryption (CP-ABE) has drawn wide attentions. However, there is a drawback preventing CP-ABE from being applied to cloud applications. In CP-ABE, the access structure is included in the ciphertext, and it may disclose user’s privacy. In this paper, we find a more efficient method to connect ABE with inner product encryption and adopt several techniques to ensure the expressiveness of access structure, the efficiency and security of our scheme. We are the first to present a secure, efficient fine-grained access control scheme with hidden access structure, the access structure can be expressed as AND-gates on multi-valued attributes with wildcard. We conceal the entire attribute instead of only its values in the access structure. Besides, our scheme has obvious advantages in efficiency compared with related schemes. Our scheme can make data sharing secure and efficient, which can be verified from the analysis of security and performance.

An Attribute-Based Searchable Encryption Scheme for Non-Monotonic Access Structure

2020 ◽  
pp. 263-283 ◽  
Author(s):  
Mamta ­ ◽  
Brij B. Gupta
Keyword(s):  
Access Control ◽  
Searchable Encryption ◽  
Access Structure ◽  
Encryption Scheme ◽  
Security Model ◽  
Secret Key ◽  
Fine Grained ◽  
Diffie Hellman ◽  
Attribute Based Encryption ◽  
Encryption Schemes

Attribute based encryption (ABE) is a widely used technique with tremendous application in cloud computing because it provides fine-grained access control capability. Owing to this property, it is emerging as a popular technique in the area of searchable encryption where the fine-grained access control is used to determine the search capabilities of a user. But, in the searchable encryption schemes developed using ABE it is assumed that the access structure is monotonic which contains AND, OR and threshold gates. Many ABE schemes have been developed for non-monotonic access structure which supports NOT gate, but this is the first attempt to develop a searchable encryption scheme for the same. The proposed scheme results in fast search and generates secret key and search token of constant size and also the ciphertext components are quite fewer than the number of attributes involved. The proposed scheme is proven secure against chosen keyword attack (CKA) in selective security model under Decisional Bilinear Diffie-Hellman (DBDH) assumption.

On Enabling Attribute-Based Encryption to Be Traceable Against Traitors

2020 ◽  
Author(s):  
Zhen Liu ◽  
Qiong Huang ◽  
Duncan S Wong
Keyword(s):  
Access Control ◽  
High Efficiency ◽  
Black Box ◽  
The Other ◽  
Encrypted Data ◽  
Malicious User ◽  
Fine Grained ◽  
Other Hand ◽  
Attribute Based Encryption

Abstract Attribute-based encryption (ABE) is a versatile one-to-many encryption primitive, which enables fine-grained access control over encrypted data. Due to its promising applications in practice, ABE schemes with high efficiency, security and expressivity have been continuously emerging. On the other hand, due to the nature of ABE, a malicious user may abuse its decryption privilege. Therefore, being able to identify such a malicious user is crucial towards the practicality of ABE. Although some specific ABE schemes in the literature enjoys the tracing function, they are only proceeded case by case. Most of the ABE schemes do not support traceability. It is thus meaningful and important to have a generic way of equipping any ABE scheme with traceability. In this work, we partially solve the aforementioned problem. Namely, we propose a way of transforming (non-traceable) ABE schemes satisfying certain requirements to fully collusion-resistant black-box traceable ABE schemes, which adds only $O(\sqrt{\mathcal{K}})$ elements to the ciphertext where ${\mathcal{K}}$ is the number of users in the system. And to demonstrate the practicability of our transformation, we show how to convert a couple of existing non-traceable ABE schemes to support traceability.

Fine-grained user access control in ciphertext-policy attribute-based encryption

2011 ◽  
Vol 5 (3) ◽  
pp. 253-261 ◽  
Author(s):  
Junbeom Hur ◽  
Chanil Park ◽  
Seong Oun Hwang
Keyword(s):  
Access Control ◽  
Fine Grained ◽  
Attribute Based Encryption ◽  
User Access ◽  
Ciphertext Policy

Multiple Access Control Struction for Cloud with Ciphertext

2014 ◽  
Vol 556-562 ◽  
pp. 5888-5892
Author(s):  
An Ping Xiong ◽  
Xin Xin He
Keyword(s):  
Access Control ◽  
General Scheme ◽  
Computational Cost ◽  
Cloud Service ◽  
Fine Grained ◽  
Access Control Policies ◽  
Attribute Based Encryption ◽  
Data Owner ◽  
Multiple Threshold ◽  
Heavy Work

The attribute-based encryption scheme of cloud storage application environment helps achieve a flexible access control and confidentiality of the data. However, at present efficient and fine-grained access control can not be achieved. This is caused by the heavy re-encryption workload of data owner while attribute revocation. Besides, there is no solution to revoke user directly. By introducing key segmentation and proxy re-encryption technology to encrypt the part of the heavy work to the cloud service provider to perform, the new scheme greatly reduces the computational cost of data owner. In addition, a special attribute which the data owner controls independently is added to construct different attribute domains of CP-ABE so that the data owner can completely control of the user permissions. The new scheme not only can support multiple threshold fine access control policies, but also can achieve cancellation directly to the user as well as to the user attribute. Experimental results show that the new scheme is superior to the general scheme, achieve highly efficient, fine, and flexible access control.

scholarly journals HASBE access control model with Secure Key Distribution and Efficient Domain Hierarchy for cloud computing

2016 ◽  
Vol 6 (2) ◽  
pp. 770
Author(s):  
RajaniKanth Aluvalu ◽  
Vanraj Kamliya ◽  
Lakshmi Muddana
Keyword(s):  
Cloud Computing ◽  
Access Control ◽  
Key Distribution ◽  
Control Model ◽  
Huge Amount ◽  
Hierarchical Assembly ◽  
Fine Grained ◽  
Access Control Models ◽  
Access Control Policies ◽  
Attribute Based Encryption

Cloud computing refers to the application and service that run on a distributed system using virtualized resources and access by common internet protocol and networking standard. Cloud computing virtualizes system by pooling and sharing resources. System and resources can be monitored from central infrastructure as needed. It requires high security because now day’s companies are placing more essential and huge amount of data on cloud. Hence traditional access control models are not sufficient for cloud computing applications. So encryption based on Attribute (“ABE”-“Attribute based encryption”) has been offered for access control of subcontracted data in cloud computing with complex access control policies. Traditional HASBE provides Flexibility, scalability and fine-grained access control but does not support hierarchical domain structure. In this paper, we had enhanced “Hierarchical attribute-set-based encryption” (“HASBE”) access control with a hierarchical assembly of users, with flexible domain Hierarchy structure and Secure key distribution with predefined policy

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