Identity Based Proxy Re-Encryption Scheme (IBPRE+) for Secure Cloud Data Sharing

Wang, Xu An; Xhafa, Fatos; Zheng, Zhong; Nie, Jinting

doi:10.1109/incos.2016.83

Cited by 8 publications

(9 citation statements)

References 15 publications

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“…In our work, the data owner (DO) is considered a fully trusted entity, a claim which goes in line with the work of [13] in which the authors entrust the encryptor to produce re-encryption keys reKey for the different users in order to control the re-encryption key issuing to the legitimate user. The cloud server in our paper is considered honest-but-curious, meaning it will execute all the operations under its responsibility but might want to get more insights into the user authentication and authorization operations, as well as into the decryption process.…”

Section: Security Modelmentioning

confidence: 83%

“…We follow the work in [13] and entrust the DO to produce system wide public and master keys, data user public and private keys as well as parts of the user privilege key. As the generation of the privilege key requires both the DO and attribute authorities (AA), no single entity in our scheme possesses enough privileges to generate all the parameters on itself.…”

Section: Key-escrow Issuementioning

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. In our work, the data owner no longer needs to always be online and user identities privacy as well as category privacy are guaranteed through blind decryption.…”

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: Security Modelmentioning

confidence: 83%

Section: Key-escrow Issuementioning

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

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“…Thinking of the merits of identity-based algorithms, Wang et al [ 12 ] presented an ID-based PRE scheme (called IBPRE+) for secure cloud data sharing. In their scheme, the data owner could utilize a random number of encryption processes to dynamically control the capability of sharing.…”

Section: Research Backgroundsmentioning

confidence: 99%

“…On the contrary, a single-hop PRE only allows a ciphertext to be transformed once. In practice, a PRE scheme has lots of applications [ 9 , 10 , 11 , 12 ] in the real world such as forwarding of confidential e-mails, key escrow, key distribution, etc.…”

Section: Introductionmentioning

confidence: 99%

An Improved Proxy Re-Encryption Scheme for IoT-Based Data Outsourcing Services in Clouds

Lin

Hung

2020

Sensors

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IoT-based data outsourcing services in clouds could be regarded as a new trend in recent years, as they could reduce the hardware and software cost for enterprises and obtain higher flexibility. To securely transfer an encrypted message in the cloud, a so-called proxy re-encryption scheme is a better alternative. In such schemes, a ciphertext designated for a data aggregation is able to be re-encrypted as one designated for another by a semi-trusted proxy without decryption. In this paper, we introduce a secure proxy re-encryption protocol for IoT-based data outsourcing services in clouds. The proposed scheme is provably secure assuming the hardness of the bilinear inverse Diffie–Hellman problem (BIDHP). In particular, our scheme is bidirectional and supports the functionality of multi-hop, which allows an uploaded ciphertext to be transformed into a different one multiple times. The ciphertext length of our method is independent of the number of involved IoT nodes. Specifically, the re-encryption process only takes one exponentiation computation which is around 54 ms when sharing the data with 100 IoT devices. For each IoT node, the decryption process only requires two exponentiation computations. When compared with a related protocol presented by Kim and Lee, the proposed one also exhibits lower computational costs.

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Proxy Re-Encryption for Secure Data Sharing with Blockchain in Internet of Medical Things

Pei,

Yang,

et al. 2024

Computer Networks

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Identity Based Proxy Re-Encryption Scheme (IBPRE+) for Secure Cloud Data Sharing

Cited by 8 publications

References 15 publications

Offline privacy preserving proxy re-encryption in mobile cloud computing

Offline privacy preserving proxy re-encryption in mobile cloud computing

An Improved Proxy Re-Encryption Scheme for IoT-Based Data Outsourcing Services in Clouds

Proxy Re-Encryption for Secure Data Sharing with Blockchain in Internet of Medical Things

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