Adaptively secure multi-authority attribute-based encryption with verifiable outsourced decryption

Zhang, Kai; Ma, Jianfeng; Li, Jiajia; Li, Hui

doi:10.1007/s11432-016-0012-9

Cited by 19 publications

(16 citation statements)

References 6 publications

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“…The schemes [26], [37] only support decryption outsourcing; the scheme [36] implements multi-keyword search; the scheme [38] support decryption outsourcing and multikeyword search; our VMKS-ABE scheme in cloud storage supports both encryption and decryption outsourcing as well as multi-keyword search.…”

Section: Performance Analysismentioning

confidence: 99%

“…The results are showed in Table 3, which E represents the exponentiation operation in the calculation, P represents the pair operation in the calculation, n is the number of attributes of the user, L the number of attributes in the policy, and j the number of keywords in the middle of encryption, j represents the number of keywords in search. From table 3 we can see in the private key generation phase, the amount of calculation increases linearly with the number of attributes of the user; in the encryption phase, [26], [37], [38] does not support encryption outsourcing, and their calculation amount grows linearly with the number of attributes in the access policy.…”

Section: Performance Analysismentioning

confidence: 99%

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Verifiable and Multi-Keyword Searchable Attribute-Based Encryption Scheme for Cloud Storage

2019

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In attribute-based searchable encryption (ABSE) scheme, data owners can encrypt their data with access policy for security consideration, and encrypt keywords to obtain keyword index for privacy keyword search, and data users can search interesting keyword on keyword indexes by keyword search trapdoor. However, many existing searchable encryption schemes only support single keyword search and most of the existing attribute-based encryption (ABE) schemes have high computational costs at user client. These problems significantly limit the application of attribute-based searchable encryption schemes in practice. In this paper, we propose a verifiable and multi-keyword searchable attribute-based encryption (VMKS-ABE) scheme for cloud storage, in our new scheme, multi-keyword can be searched and the search privacy is protected. That is, the cloud server can search the multi-keyword with keyword search trapdoor but it does not know any information about the keywords searched. In the proposed scheme, many computing tasks are outsourced to the cloud proxy server, which greatly reduces the computing burden at the user client. Besides, the scheme also supports the verification of the correctness of the outsourced private key. The proposed scheme is proved secure that the keyword index is indistinguishable under the adaptive keyword attacks in the general group model, and the ciphertext is selective secure under selective plaintext attacks in the random oracle model. The security and experimental results show that our scheme is suitable for practicability. INDEX TERMS Attribute-based encryption, verifiable outsourcing, multi-keyword search, adaptive security.

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Section: Performance Analysismentioning

confidence: 99%

Section: Performance Analysismentioning

confidence: 99%

Verifiable and Multi-Keyword Searchable Attribute-Based Encryption Scheme for Cloud Storage

2019

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“…It also supported user revocation but only achieved selective security. An adaptively secure multiauthority CP-ABE scheme with verifiable outsourced decryption was given in [35].…”

Section: Related Workmentioning

confidence: 99%

Shorter Decentralized Attribute-Based Encryption via Extended Dual System Groups

Jie

Chen

Ge³

et al. 2017

Security and Communication Networks

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Decentralized attribute-based encryption (ABE) is a special form of multiauthority ABE systems, in which no central authority and global coordination are required other than creating the common reference parameters. In this paper, we propose a new decentralized ABE in prime-order groups by using extended dual system groups. We formulate some assumptions used to prove the security of our scheme. Our proposed scheme is fully secure under the standard -Lin assumption in random oracle model and can support any monotone access structures. Compared with existing fully secure decentralized ABE systems, our construction has shorter ciphertexts and secret keys. Moreover, fast decryption is achieved in our system, in which ciphertexts can be decrypted with a constant number of pairings.

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“…Threshold access structure is used in this scheme, and the receiver can decrypt the ciphertext of the sender only if the receiver's attribute set and the sender's property set similarity are greater than or equal to a threshold value. Previous works divided attribute‐based encryption (ABE) mechanism into two parts: key‐policy attribute‐based encryption (KP‐ABE) and ciphertext‐policy attribute‐based encryption (CP‐ABE). In KP‐ABE, the access control policy exists in the key and the attribute set is contained in the ciphertext.…”

Section: Introductionmentioning

confidence: 99%

A based on blinded CP‐ABE searchable encryption cloud storage service scheme

Cao

Zhang

Dong³

et al. 2018

Int J Communication

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Summary Cloud computing has great economical advantages and wide application, more and more data owners store their data in the cloud storage server (CSS) to avoid tedious local data management and insufficient storage resources. But the privacy of data owners faces enormous challenges. The most recent searchable encryption technology adopts the ciphertext‐policy attribute‐based encryption (CP‐ABE), which is one good method to deal with this security issue. However, the access attributes of the users are transmitted and assigned in plaintext form. In this paper, we propose a based on blinded CP‐ABE searchable encryption cloud storage service (BCP‐ABE‐SECSS) scheme, which can blind the access attributes of the users in order to prevent the collusion attacks of the CSS and the users. Data encryption and keyword index generation are performed by the data owners; meanwhile, we construct that CSS not only executes the access control policy of the data but also performs the pre‐decryption operation about the encrypted data to solve higher time cost of decryption calculation to the data users. Security proof results show that this scheme has access attribute security, data confidentiality, indistinguishable security against chosen keyword attack, and resisting the collusion attack between the data user and the CSS. Performance analysis and the experimental results show that this scheme can effectively reduce the computation time cost of the data owners and the data users.

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Adaptively secure multi-authority attribute-based encryption with verifiable outsourced decryption

Cited by 19 publications

References 6 publications

Verifiable and Multi-Keyword Searchable Attribute-Based Encryption Scheme for Cloud Storage

Verifiable and Multi-Keyword Searchable Attribute-Based Encryption Scheme for Cloud Storage

Shorter Decentralized Attribute-Based Encryption via Extended Dual System Groups

A based on blinded CP‐ABE searchable encryption cloud storage service scheme

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