Key-Escrow Free Attribute-Based Multi-Keyword Search with Dynamic Policy Update in Cloud Computing

Varri, Uma Sankararao; Pasupuleti, Syam Kumar; Kadambari, K. V.

doi:10.1109/ccgrid49817.2020.00-48

Cited by 10 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The computation and communication cost are subject to the policy size. Recently, Varri et al [17] proposed a multi-keyword search over CP-ABE with dynamic policy update. This scheme uses the encryption information of the old policy to update the policy without choosing the new secret value.…”

Section: A Ciphertext Updatementioning

confidence: 99%

A Lightweight Policy Update Scheme for Outsourced Personal Health Records Sharing

Fugkeaw

2021

IEEE Access

View full text Add to dashboard Cite

With high flexibility and accessibility of data outsourcing environment such as cloud computing environment, several healthcare providers implement electronic personal health records (PHRs) to enable individual patients to manage their own health data in such resilient and scalable environment. However, PHRs contain highly sensitive information of which the security and privacy issues are the critical concern. Besides, PHRs owners should be capable to flexibly and securely define their own access policy for their outsourced data. In addition to the basic authentication feature, existing commercial cloud platforms usually provide symmetric or public key encryption as an optional feature to support data confidentiality for their tenants. However, such traditional encryption schemes are not suitable for data outsourcing environment because of high key management overhead of symmetric encryption and high maintenance cost for handling multiple copies of ciphertext for public key encryption solution. In this paper, we design and develop a secure and fine-grained access control scheme with lightweight access policy update for outsourced PHRs. Our proposed scheme is based on the ciphertext policy attribute-based encryption (CP-ABE) and proxy reencryption (PRE). In addition, we introduce a policy versioning technique to support the full traceability of policy changes. Finally, we conducted the performance evaluation to demonstrate the efficiency of the proposed scheme.

show abstract

Section: A Ciphertext Updatementioning

confidence: 99%

A Lightweight Policy Update Scheme for Outsourced Personal Health Records Sharing

Fugkeaw

2021

IEEE Access

View full text Add to dashboard Cite

show abstract

“…at is, fine-grained access control is needed for PHR. us, attribute-based keyword search has been implemented by many researchers [1][2][3][4][5][6][7][8][9][10][11][12]. In these schemes, data owners can encrypt their data with predefined access control policies.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are some limitations in existing schemes. Firstly, in the schemes [7][8][9][10], each user's attributes are organized in a single set, which cannot support the compounded attributes. For example, consider a user who is a "Researcher" working in "College A" and serves as both "Director" of "Department of Medicine" and "Professor" of "Department of Chemistry," and the above attributes are both valid and are likely to be used to describe him.…”

Section: Introductionmentioning

confidence: 99%

Attribute Set-Based Boolean Keyword Search over Encrypted Personal Health Records

Lin

et al. 2021

Security and Communication Networks

View full text Add to dashboard Cite

A personal health record (PHR) is an electronic application which enables patients to collect and share their health information. With the development of cloud computing, many PHR services have been outsourced to cloud servers. Cloud computing makes it easier for patients to manage their personal health records and makes it easier for doctors and researchers to share and access this information. However, due to the high sensitivity of PHR, a series of security protections are needed to protect them, such as encryption and access control. In this article, we propose an attribute set-based Boolean keyword search scheme, which can realize fine-grained access control and Boolean keyword search over encrypted PHR. Compared with the existing attribute-based searchable encryption, our solution can not only improve the flexibility in specifying access policies but also perform Boolean keyword search, which can meet the needs of large-scale PHR users. Furthermore, we simulate our scheme, and the experimental results show that our scheme is practical for PHR systems in cloud computing.

show abstract

Blockchain-Aided Keyword Search over Encrypted Data in Cloud

Varri¹

2023

Communications in Computer and Information Science

View full text Add to dashboard Cite

Key-Escrow Free Attribute-Based Multi-Keyword Search with Dynamic Policy Update in Cloud Computing

Cited by 10 publications

References 18 publications

A Lightweight Policy Update Scheme for Outsourced Personal Health Records Sharing

A Lightweight Policy Update Scheme for Outsourced Personal Health Records Sharing

Attribute Set-Based Boolean Keyword Search over Encrypted Personal Health Records

Blockchain-Aided Keyword Search over Encrypted Data in Cloud

Contact Info

Product

Resources

About