Fully Secure Cipertext-Policy Hiding CP-ABE

Lai, Junzuo; Deng, Robert H.; Li, Yingjiu

doi:10.1007/978-3-642-21031-0_3

Cited by 143 publications

(105 citation statements)

References 23 publications

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“…In Table 1, we compare the user's private key size, ciphertext size, public key size, and computational cost used in the whole system with those in [8][9][10]. Compared to [8], the user's private key size is the same, the ciphertext size is increased by the bit size of an element in G 1 because 1 ( , ) is embedded into it, and the public key size is increased by the bit size of an element in G 0 because PK SDS = is used as one of the public keys in the system.…”

Section: Extra Costs Due To the Sds Constraint And Comparisonmentioning

confidence: 99%

“…Compared to [8][9][10], our scheme has an extra network communication cost per data object if the data object is under an SDS constraint. The proxy server sends the partially decrypted ciphertext to the SDS monitor, and the SDS monitor sends the further partially decrypted ciphertext to the user.…”

Section: Extra Costs Due To the Sds Constraint And Comparisonmentioning

confidence: 99%

“…Researchers have been focusing on hiding access control policies from outsiders [6][7][8][9][10]. Yu et al [6] and Nishide et al [7] proposed CP-ABE schemes with a hidden access control policy.…”

Section: Related Workmentioning

confidence: 99%

“…The main reason why we extend Hur's scheme is because the handling of the SDS constraint in our approach needs an entity, aside from the data owner, to determine if the user's attributes satisfy the access control policy of the data object before sending the data object to the user without knowing the policy; in Hur's scheme, the storage center possesses the desired ability. Lai et al [9,10] proposed CP-ABE with a partially hidden access policy. In their work, the attributes have two parts: the attribute name and the attribute value.…”

Section: Related Workmentioning

confidence: 99%

“…Compared to KP-ABE (Key-Policy Attribute-Based Encryption) [4] and fuzzy identity-based encryption [2], CP-ABE (Ciphertext-Policy Attribute-Based Encryption) [3,5] is more appropriate, as it enables the data owner to more freely define the access control policy. Moreover, because the access control policy itself may leak critical information, efforts have been made [6][7][8][9][10] to hide the access control policy by blinding the attributes within it.…”

Section: Introductionmentioning

confidence: 99%

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CP-ABE Access Control Scheme for Sensitive Data Set Constraint with Hidden Access Policy and Constraint Policy

Helil

Rahman

2017

Security and Communication Networks

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CP-ABE (Ciphertext-Policy Attribute-Based Encryption) with hidden access control policy enables data owners to share their encrypted data using cloud storage with authorized users while keeping the access control policies blinded. However, a mechanism to prevent users from achieving successive access to a data owner’s certain number of data objects, which present a conflict of interest or whose combination thereof is sensitive, has yet to be studied. In this paper, we analyze the underlying relations among these particular data objects, introduce the concept of the sensitive data set constraint, and propose a CP-ABE access control scheme with hidden attributes for the sensitive data set constraint. This scheme incorporates extensible, partially hidden constraint policy. In our scheme, due to the separation of duty principle, the duties of enforcing the access control policy and the constraint policy are divided into two independent entities to enhance security. The hidden constraint policy provides flexibility in that the data owner can partially change the sensitive data set constraint structure after the system has been set up.

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Section: Extra Costs Due To the Sds Constraint And Comparisonmentioning

confidence: 99%

Section: Extra Costs Due To the Sds Constraint And Comparisonmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

CP-ABE Access Control Scheme for Sensitive Data Set Constraint with Hidden Access Policy and Constraint Policy

Helil

Rahman

2017

Security and Communication Networks

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A secure multi‐authority attribute based encryption approach for robust smart grids

Saidi,

Amira,

Nouali

2023

Concurrency and Computation

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This paper presents EMBASS, an Enhanced Multi‐Authority Attribute‐Based Encryption System for Smart Grids. EMBASS supports outsourced decryption to devices with limited resources. It also uses a proxy to add fake values to the access policy in order to protect against malicious users. Additionally, a proxy user assistant is utilized to create an intermediate key for each fog node in the decryption process, and a chain decryption technique is used to further delegate the decryption process. The security properties and performance of the proposed system are analyzed, discussed and compared to state of the art approaches. EMBASS has been discussed for usage with smart grids, and experimentation shows that it yields promising results compared to state‐of‐the‐art approaches.

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A verifiable hidden policy CP‐ABE with decryption testing scheme and its application in VANET

Zhao

Zhang

Xie

et al. 2019

Trans Emerging Tel Tech

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As a new kind of cryptographic primitive, attribute‐based encryption (ABE) is widely used in various complex scenarios because it has the characteristic of access control while encrypting messages. However, the existing ciphertext policy ABE (CP‐ABE) encryption schemes have some inherent defects, such as the lack of privacy‐preserving and inefficient decryption. These weak points make them difficult to play a role in scenarios with high real‐time and high data confidentiality requirements, for example, vehicle ad hoc network (VANET). Therefore, we proposed a verifiable hidden policy CP‐ABE with decryption testing scheme (or VHPDT, for short). It has the following features: hidden policy to privacy‐preserving and outsourced decryption testing can verify the correctness of the decrypted result. Furthermore, we apply it into VANET.

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Fully Secure Cipertext-Policy Hiding CP-ABE

Cited by 143 publications

References 23 publications

CP-ABE Access Control Scheme for Sensitive Data Set Constraint with Hidden Access Policy and Constraint Policy

CP-ABE Access Control Scheme for Sensitive Data Set Constraint with Hidden Access Policy and Constraint Policy

A secure multi‐authority attribute based encryption approach for robust smart grids

A verifiable hidden policy CP‐ABE with decryption testing scheme and its application in VANET

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