Efficient decentralized multi-authority attribute based encryption for mobile cloud data storage

Koe, Arthur Sandor Voundi; Lin, Yaping; Li, Xiehua; Feng, Lin; Zhang, Shiwen

doi:10.1016/j.jnca.2019.01.003

Cited by 58 publications

(21 citation statements)

References 9 publications

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“…The scheme however could not totally solve the key escrow issue. Our previous work in [11] follows the work [19] by removing the CA and putting trust upon the data owner for secret parameters generation in order to solve the key escrow problem. In this paper, we improve and adapt our previous work [11] into the type-based proxy re-encryption environment in order to build our solution.…”

Section: Attribute Based Encryptionmentioning

confidence: 99%

“…We consider in our system four main entities, namely, the data owner (DO), a set of attribute authorities (AA) logically playing the same role but managing disjoint sets of attributes, the cloud service provider (CSP) also considered as proxy server, and hosting the cloud user assistant (CUA) described in [11], and finally the data user (DU).…”

Section: Problem Statementmentioning

confidence: 99%

“…4 below. All the other operations in our scheme are multi-authority ABE operations based on our previous work in [11] which complement our three above-mentioned core functionalities.…”

Section: Core Functionalitiesmentioning

confidence: 99%

“…In this paper, we implement both privacy preserving cloud-user authentication and re-encryption key access control approaches by combining the efficient multi-authority ABE scheme in [11] which we modified to suit our purpose, and the scheme in [7]. We avoid weaker re-encryption schemes wherein the proxy possesses both parties' keys simultaneously [12], by following the work in [13] entrusting the data owner to generate re-encryption keys for a stronger user authorization.…”

Section: Introductionmentioning

confidence: 99%

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Offline privacy preserving proxy re-encryption in mobile cloud computing

Koe

Lin

2019

Pervasive and Mobile Computing

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This paper addresses the always online behavior of the data owner in proxy reencryption schemes for re-encryption keys issuing. We extend and adapt multi-authority ciphertext policy attribute based encryption techniques to type-based proxy re-encryption to build our solution. As a result, user authentication and user authorization are moved to the cloud server which does not require further interaction with the data owner, data owner and data users identities are hidden from the cloud server, and re-encryption keys are only issued to legitimate users. An in depth analysis shows that our scheme is secure, flexible and efficient for mobile cloud computing

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Section: Attribute Based Encryptionmentioning

confidence: 99%

Section: Problem Statementmentioning

confidence: 99%

“…4 below. All the other operations in our scheme are multi-authority ABE operations based on our previous work in [11] which complement our three above-mentioned core functionalities.…”

Section: Core Functionalitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Offline privacy preserving proxy re-encryption in mobile cloud computing

Koe

Lin

2019

Pervasive and Mobile Computing

Self Cite

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“…In [8], encryption scheme has an intuitive key distribution mechanism to enable data access. In [9], there is a masked part of the secret key between the data user and attribute authorities. In [10], two separate cloud systems that communicate with each other are required and the data user must be authenticated.…”

Section: Introductionmentioning

confidence: 99%

Storage and Communication Security in Cloud Computing Using a Homomorphic Encryption Scheme Based Weil Pairing

Dogan¹,

Altindiş²

2020

ELEKTRON ELEKTROTECH

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With introduction of smart things into our lives, cloud computing is used in many different areas and changes the communication method. However, cloud computing should guarantee the complete security assurance in terms of privacy protection, confidentiality, and integrity. In this paper, a Homomorphic Encryption Scheme based on Elliptic Curve Cryptography (HES-ECC) is proposed for secure data transfer and storage. The scheme stores the data in the cloud after encrypting them. While calculations, such as addition or multiplication, are applied to encrypted data on cloud, these calculations are transmitted to the original data without any decryption process. Thus, the cloud server has only ability of accessing the encrypted data for performing the required computations and for fulfilling requested actions by the user. Hence, storage and transmission security of data are ensured. The proposed public key HES-ECC is designed using modified Weil-pairing for encryption and additional homomorphic property. HES-ECC also uses bilinear pairing for multiplicative homomorphic property. Security of encryption scheme and its homomorphic aspects are based on the hardness of Elliptic Curve Discrete Logarithm Problem (ECDLP), Weil Diffie-Hellman Problem (WDHP), and Bilinear Diffie-Helman Problem (BDHP).

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Outsourcing multiauthority access control revocation and computations over medical data to mobile cloud

Koe

Chen

Tang

et al. 2022

Int J of Intelligent Sys

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With recent advances in cloud computing, mobile devices are increasingly being used to record patient physiological parameters, and transfer them to a cloudbased hospital information system, for access control mediation over a variety of stakeholders. In such a cloud-based architecture, the patient must specify an access policy for a group of authorized parties towards its outsourced data. Multiauthority ciphertext-policy attribute-based encryption (CP-ABE) was provided as an innovative cloud-based access control cryptographic primitive to tackle the key escrow issue in a centralized architecture, and boost flexibility through cross-domain attributes management. Existing works, however, still have glaring drawbacks. First, they still rely on a trusted authority to generate and distribute user secret keys. Second, they do not simultaneously provide encryption, decryption, or revocation outsourcing, resulting in high processing and communication cost for both the data sender and the data receiver. Third, they do not support both user and attribute revocation, and the integrity of ciphertext downloaded from the cloud is not always verified at the user end. As a result, this paper exploits the dummy attribute technique and introduces a novel, efficient, and secure multiauthority

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Efficient decentralized multi-authority attribute based encryption for mobile cloud data storage

Cited by 58 publications

References 9 publications

Offline privacy preserving proxy re-encryption in mobile cloud computing

Offline privacy preserving proxy re-encryption in mobile cloud computing

Storage and Communication Security in Cloud Computing Using a Homomorphic Encryption Scheme Based Weil Pairing

Outsourcing multiauthority access control revocation and computations over medical data to mobile cloud

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