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An Attribute-Based Encryption Method Using Outsourced Decryption and Hierarchical Access Structure, Journal of Telecommunications and Information Technology, 2022, nr 2
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Title: An Attribute-Based Encryption Method Using Outsourced Decryption and Hierarchical Access Structure, Journal of Telecommunications and Information Technology, 2022, nr 2

Creator:

Bhajantri, Lokesh B. ; Mujawar, Tabassum N.

Date:

2022, nr 2

Resource Type:

artykuł

Description:

Cloud computing is being rapidly adopted by many organizations from different domains and large amounts of data is stored in the cloud. In order to ensure data security, the attribute-based access control mechanism has been emerging recently as a fine-grained access control model that grants access based on the data user’s attributes. In this model, the data owner builds the access policy using the attributes of the data users and access to the data is granted only if the requirements of such an access policy are satisfied. Ciphertext policy-based attribute-based encryption (CPABE) is one of the most widely used methods for providing encrypted access control. Complex, time consuming and costly paring operations are the major issue with the CPABE method. Hence, another efficient method is needed to reduce the data user’s overhead while decrypting data. This paper presents an efficient method consisting in outsourcing decryption operations to a third-party server, so that complex operations may be performed by that machine with only some simple calculations left on the data user’s side. The concept of a hierarchical access structure is also integrated with the traditional CPABE technique. The hierarchical approach enables the data owner to encrypt multiple data using a single common hierarchical access structure. This allows the user to decrypt only the relevant part of ciphertext, depending on which fragment of the hierarchical access structure is satisfied. The paper evaluates also the performance of the proposed model in terms of time and storage cost.

Publisher:

Instytut Łączności - Państwowy Instytut Badawczy

Format:

application/pdf

Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852 ; oai:bc.itl.waw.pl:2228

Source:

Journal of Telecommunications and Information Technology

Language:

ang

Rights Management:

Biblioteka Naukowa Instytutu Łączności

Subject and keywords:

cloud computing hierarchical access structure CPABE

Object collections:

Last modified:

Mar 12, 2024

In our library since:

Jul 21, 2022

Number of object content hits:

34

All available object's versions:

https://bc.itl.waw.pl/publication/2535

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Edition name Date
Mujawar, Tabassum N.; Bhajantri, Lokesh B., An Attribute-Based Encryption Method Using Outsourced Decryption and Hierarchical Access Structure, Journal of Telecommunications and Information Technology, 2022, nr 2 Mar 12, 2024

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