Attribute-based Proxy Re-encryption with a Constant Number of Pairing Operations

Seo, Hwa Jeong; Kim, Howon

doi:10.6109/jicce.2012.10.1.053

Cited by 24 publications

(23 citation statements)

References 15 publications

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“…Compared with [6], it has a new property named reencryption control which means that the user can decide which ciphertext can be reencrypted later during the encryption process. Later, Seo and Kim [8] presented another CP-ABPRE scheme which only needs a constant number of bilinear pairing operations. So the computation cost and ciphertext length are reduced significantly compared to previous schemes [7,27].…”

Section: Related Workmentioning

confidence: 99%

“…(1) A new scheme is proposed and it overcomes the restriction on the attacker in a selective security model in the existing schemes [6][7][8][9]11] and is proved to be adaptively secure. (2) Our proposal supports any monotone access formulas including what the AND gate access structure supports.…”

Section: Related Workmentioning

confidence: 99%

“…In 2013, Li [9] presented a new CP-ABPRE scheme in which the ciphertext policy is matrix access policy based on LSSS matrix access structure. In 2014, Chung et al [10] analyzed these CP-ABPRE schemes [6][7][8]33] and made comparisons of them by some criteria. The aforementioned CP-ABPRE schemes, however, are only CPA-secure.…”

Section: Related Workmentioning

confidence: 99%

“…However, most of existing ABPRE schemes [6][7][8][9][10][11][12] were proven secure only in the selective security model [13], in which an adversary must firstly choose an attack target before the public parameters are published. This restriction on an attacker was not natural, which causes attackers to behave differently from the way in a real environment.…”

Section: International Journal Of Distributed Sensor Networkmentioning

confidence: 99%

“…Generally speaking, an ABPRE scheme has an authority, a sender, a user called a delegator who needs to delegate his/her decryption ability to someone else, a proxy who helps the delegator to generate a reencrypted ciphertext, and some receivers as participants. Recently, due to their widespread use in the realistic scenes, widespread attention was paid to ABPRE schemes by researchers and some excellent ABPRE schemes have been proposed [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Efficient and Adaptively Secure Attribute-Based Proxy Reencryption Scheme

Pang

2016

International Journal of Distributed Sensor Networks

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Ciphertext-Policy Attribute-Based Proxy Reencryption (CP-ABPRE) has found many practical applications in the real world, because it extends the traditional Proxy Reencryption (PRE) and allows a semitrusted proxy to transform a ciphertext under an access policy to the one with the same plaintext under another access policy. The existing CP-ABPRE schemes were proven secure only in the selective security model, a limited model, which is an unnatural constraint on the attacker. The scheme proved in this model can only be called selectively secure one. However, from a security perspective, the adaptively secure CP-ABPRE scheme is more desirable. In this paper, an adaptively secure CP-ABPRE scheme is proposed, which is based on Waters' dual system encryption technology. The proposed scheme is constructed in composite order bilinear groups and proven secure under the complexity assumptions of the subgroup decision problem for 3 primes (3P-SDP). Analyses show that our proposal provides higher computational efficiency compared with the existing schemes.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: International Journal Of Distributed Sensor Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Efficient and Adaptively Secure Attribute-Based Proxy Reencryption Scheme

Pang

2016

International Journal of Distributed Sensor Networks

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An efficient blockchain‐based privacy‐preserving scheme with attribute and homomorphic encryption

Zhang

Cliff

et al. 2022

Int J of Intelligent Sys

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As a distributed ledger technology, blockchain has excellent openness and transparency, which can provide data security management services for distributed intelligent systems and establish effective security guarantee mechanisms. However, precisely due to the open nature of blockchain, malicious users can trace the real transaction transfer path with high probability and even obtain the real identity of users by collecting transaction information on the blockchain and performing data analysis. Besides, existing intelligent systems lack effective encryption or desensitization measures, and attackers are able to access data in intelligent systems through identity forgery and other means, posing a huge potential risk to user privacy. To alleviate the above security issues, this paper proposes an efficient blockchain‐based privacy‐preserving scheme with attribute and homomorphic encryption, which can not only achieve user‐level fine‐grained secure access control but also supports the transmission and verification of blockchain data in the form of ciphertext. The access control method based on attribute‐based encryption and the data transmission method based on homomorphic encryption are proposed, and the blockchain‐based access whitelist mechanism is designed to reduce the resource loss due to repeated authentication. Simulation calculations and blockchain performance experiments show that this scheme can develop flexible access policies according to the attributes of users, has good performance in computational efficiency, and the blockchain performance test results are stable with errors in milliseconds for all operations. It has certain application potential in the field of distributed intelligent systems and blockchain.

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Verifiable attribute‐based proxy re‐encryption for secure public cloud data sharing

Lin

Zhang

Wang

2016

Security Comm Networks

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For secure data sharing in the public cloud, attribute‐based encryption was introduced to simultaneously achieve data confidentiality and fine‐grained access control. In order to update access control of the attribute‐based encrypted data from delegation, attribute‐based proxy re‐encryption (AB‐PRE) was proposed accordingly. Most previous AB‐PRE schemes require that the proxy executes the re‐encryption honestly. However, the public cloud as a proxy may not meet the requirement because the encrypted data are delegated to the public cloud and out of control for data owners. In this paper, we introduce verifiability for AB‐PRE to check the correctness of the re‐encryption executed by the proxy. By introducing a commitment scheme and a key derivation function, we propose a generic construction of unidirectional single‐hop AB‐PRE with verifiable re‐encryption (AB‐VPRE) for both key‐policy and ciphertext‐policy settings, and the access structure can be monotonic and non‐monotonic. We prove the security and the verification soundness of our constructed AB‐VPRE scheme in the standard model and provide three instantiations. Compared with previous work on AB‐PRE, our proposed AB‐VPRE schemes require less computation and can efficiently detect the malicious behaviors of the proxy. Copyright © 2016 John Wiley & Sons, Ltd.

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Attribute-based Proxy Re-encryption with a Constant Number of Pairing Operations

Cited by 24 publications

References 15 publications

Efficient and Adaptively Secure Attribute-Based Proxy Reencryption Scheme

Efficient and Adaptively Secure Attribute-Based Proxy Reencryption Scheme

An efficient blockchain‐based privacy‐preserving scheme with attribute and homomorphic encryption

Verifiable attribute‐based proxy re‐encryption for secure public cloud data sharing

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