Efficient Fully Secure Attribute-Based Encryption Schemes for General Access Structures

Pandit, Tapas; Barua, Rana

doi:10.1007/978-3-642-33272-2_13

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…Then, the algorithm can recover the message M from 1 by (7). We now argue that the above scheme is not hidden policy.…”

Section: Keygen(mentioning

confidence: 92%

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CP-ABE with Hidden Policy from Waters Efficient Construction

Wang

2016

International Journal of Distributed Sensor Networks

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ABE provides a good way for access controlling in cloud computing. However, in many application scenarios, access policies for encryption also should be protected since they may directly contain sensitive information. For example, in smart grid, the access policies may contain the private information about underlying data, data owner or the data recipients, and disclosing some sensitive access policies could result in negative publicity, or loss of market revenue. In this paper, we present a CP-ABE scheme with hidden policy from Waters efficient construction. In our scheme, the access policy is hidden by using the composite order bilinear groups and can be expressed with LSSS. Our scheme is proved CPA secure under four statics assumptions.

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“…Then, the algorithm can recover the message M from 1 by (7). We now argue that the above scheme is not hidden policy.…”

Section: Keygen(mentioning

confidence: 92%

“…There is a close relation between LSSS and MSP access structure, and Beimel et al [6] proved it. Pandit and Barua [7] used minimal sets to realize the smallest MSP for describing general access structure in ABE systems.…”

Section: Introductionmentioning

confidence: 99%

CP-ABE with Hidden Policy from Waters Efficient Construction

Wang

2016

International Journal of Distributed Sensor Networks

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“…Theorem 1. [17] If there exists a linear secret sharing scheme (LSSS) for a concrete MAS, then there must be a smallest MSP for the same MAS.…”

Section: Definition 2(minimal Set Of a Mas)mentioning

confidence: 99%

Traceable Ciphertet-Policy Attribute-Based Encryption with Constant Decryption

2021

KSII TIIS

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We provide a traceable ciphertext-policy attribute based encryption (CP-ABE) construction for monotone access structures (MAS) based on composite order bilinear groups, which is secure adaptively under the standard model. We construct this scheme by making use of an "encoding technique" which represents the MAS by their minimal sets to encrypt the messages. To date, for all traceable CP-ABE schemes, their encryption costs grow linearly with the MAS size, the decryption costs grow linearly with the qualified rows in the span programs. However, in our traceable CP-ABE, the ciphertext is linear with the minimal sets, and decryption needs merely three bilinear pairing computations and two exponent computations, which improves the efficiency extremely and has constant decryption. At last, the detailed security and traceability proof is given.

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CP‐ABE with outsourced decryption and directionally hidden policy

Wang

Liu

2016

Security Comm Networks

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Ciphertext‐policy attribute‐based encryption (CP‐ABE) is a novel cryptographic primitive for access controlling. However, the existing CP‐ABE schemes are very inefficient as the decryptions involve many expensive pairing operations. Another drawback is that the access policy itself may disclose some privacies of the users. In certain applications, access structures also should be protected. In this work, we propose a notion of CP‐ABE with outsourced decryption and directionally hidden policy, which allows a semi‐trusted proxy in the cloud to help a user decrypt a ciphertext, but the proxy cannot learn the plaintext and the access policy. We construct a concrete scheme from Waters' CP‐ABE and prove its security, verifiability, and directionally hidden policy. Copyright © 2016 John Wiley & Sons, Ltd.

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Efficient Fully Secure Attribute-Based Encryption Schemes for General Access Structures

Cited by 7 publications

References 25 publications

CP-ABE with Hidden Policy from Waters Efficient Construction

CP-ABE with Hidden Policy from Waters Efficient Construction

Traceable Ciphertet-Policy Attribute-Based Encryption with Constant Decryption

CP‐ABE with outsourced decryption and directionally hidden policy

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