Privacy preserving ciphertext policy attribute based encryption scheme with efficient and constant ciphertextsize

Tamizharasi, G. S.; Balamurugan, B.; Gaffar, H. Abdul

doi:10.1109/inventive.2016.7830099

Cited by 5 publications

(5 citation statements)

References 22 publications

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“…Tere has also been research on how to improve the efciency of CP-ABE schemes [17][18][19][20][21]27]. Emura et al [17] proposed a CP-ABE scheme with a constant ciphertext length to reduce the encryption and decryption time.…”

Section: Related Workmentioning

confidence: 99%

“…Odelu et al [19] designed a provably secure CP-ABE scheme with constant-size keys and ciphertext based on the RSA "AND" gate access structure, which is suitable for the mobile cloud computing environment. Tamizharasi et al [20] proposed a CP-ABE scheme for privacy protection, which eliminates redundant attributes in the policy by constructing an assignable matrix, and reduces the ciphertext size to a constant that is independent of the number of attributes of the data user. Yang et al [21] proposed a completely secure CP-ABE scheme with constant-size ciphertext, whose decryption computation only requires three pairing operations and some multiplication operations, independent of the number of attributes involved.…”

Section: Related Workmentioning

confidence: 99%

“…By using the substantial computing power of the third party to complete most of the computing tasks, the user can complete encryption or decryption only through simple calculation, reducing the user's computational overhead and improving the scheme's operational efciency. In addition, there has also been research on how to improve the efciency of CP-ABE schemes [17][18][19][20][21]. Tese eforts have mainly focused on how to improve the scheme's efciency by reducing the storage overhead.…”

Section: Introductionmentioning

confidence: 99%

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CP-ABE Optimization via the Flexible Integration of Access Policies Containing Multiple Shared Subpolicies

Wang

Guo

Helil

2023

Security and Communication Networks

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Ciphertext-policy attribute-based encryption (CP-ABE) is a cryptographic scheme that is suitable for cloud storage and can realize secure data sharing. However, in most existing CP-ABE schemes, the encryption computational overhead is proportional to the number of attributes in the access policy. Therefore, reducing the computational overhead of the scheme’s encryption is an important consideration to improve its efficiency. Furthermore, in the scenario where the access control policies corresponding to different data shared by the same data owner have multiple shared subpolicies, there is still further optimizing space for encryption. This study proposes an optimization approach for CP-ABE via the flexible integration of access policies with multiple shared subpolicies. Regarding the root nodes of policies being both the same and different, we provide optimal policy integration methods to reduce the overall encryption computation cost of the data associated with these access policies. Under the premise of preserving the original security of the CP-ABE scheme, this scheme avoids repeated calculation related to the shared subpolicies during encryption, thus improving the scheme’s efficiency. Finally, the correctness and feasibility of the scheme are examined and verified by theoretical analysis and experiments.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CP-ABE Optimization via the Flexible Integration of Access Policies Containing Multiple Shared Subpolicies

Wang

Guo

Helil

2023

Security and Communication Networks

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“…However, it is unable to preserve privacy in the access policy. In [31], the authors eliminated all redundant attributes in the access policy, and their approach significantly reduced computation overhead. With the same intention, the author of [32] proposed the 'testdecrypt-verify' approach to reduce the computation cost in their CP-ABE scheme.…”

Section: Related Workmentioning

confidence: 99%

Towards Virtuous Cloud Data Storage Using Access Policy Hiding in Ciphertext Policy Attribute-Based Encryption

et al. 2021

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Managing and controlling access to the tremendous data in Cloud storage is very challenging. Due to various entities engaged in the Cloud environment, there is a high possibility of data tampering. Cloud encryption is being employed to control data access while securing Cloud data. The encrypted data are sent to Cloud storage with an access policy defined by the data owner. Only authorized users can decrypt the encrypted data. However, the access policy of the encrypted data is in readable form, which results in privacy leakage. To address this issue, we proposed a reinforcement hiding in access policy over Cloud storage by enhancing the Ciphertext Policy Attribute-based Encryption (CP-ABE) algorithm. Besides the encryption process, the reinforced CP-ABE used logical connective operations to hide the attribute value of data in the access policy. These attributes were converted into scrambled data along with a ciphertext form that provides a better unreadability feature. It means that a two-level concealed tactic is employed to secure data from any unauthorized access during a data transaction. Experimental results revealed that our reinforced CP-ABE had a low computational overhead and consumed low storage costs. Furthermore, a case study on security analysis shows that our approach is secure against a passive attack such as traffic analysis.

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“…Tamizharasi [16] has proposed a new CP-ABE scheme to improve the level of fine-grained access control properties. This scheme implements attribute access concepts and also user access concepts to solve the problem of fine-grained access control.…”

Section: Fine-grained Access Controlmentioning

confidence: 99%

Current Issues in Ciphertext Policy-Attribute Based Scheme for Cloud Computing: A Survey

Muhammad

Zain²,

Mohamad

2018

IJET

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The use of cloud computing has increased exponentially in data resources storage over the past few years. Cloud storage reduces the overall costs of server maintenance, whereby companies only pay for the resources they actually use in the cloud storage. Despite this, security concerns in cloud computing must be a top priority. One of the common encryption methods in cloud security is Attribute Based Encryption (ABE). ABE contains two types, namely, Ciphertext Policy-Attribute Based Encryption (CP-ABE) and Key Policy- Attribute based Encryption (KP-ABE). CP-ABE is better than KP-ABE, especially in reduplication issues and fine-grained access. However, issues in CP_ABE need further improvement. Improvement for the CP-ABE scheme has been growing rapidly since 2010 to date, and five main issues need improvement. This paper reviews the proposed CP-ABE schemes during the past three years. These schemes focus on solving the five issues identified inherent in the CP-ABE scheme.

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Privacy preserving ciphertext policy attribute based encryption scheme with efficient and constant ciphertextsize

Cited by 5 publications

References 22 publications

CP-ABE Optimization via the Flexible Integration of Access Policies Containing Multiple Shared Subpolicies

CP-ABE Optimization via the Flexible Integration of Access Policies Containing Multiple Shared Subpolicies

Towards Virtuous Cloud Data Storage Using Access Policy Hiding in Ciphertext Policy Attribute-Based Encryption

Current Issues in Ciphertext Policy-Attribute Based Scheme for Cloud Computing: A Survey

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