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Updating Attribute in CP-ABE: A New Approach

Nishant Doshi, Devesh C. Jinwala

Open publisher page 2 citations

Abstract

In Ciphertext-Policy Attribute Based Encryption (CP-ABE), attributes are attached to the user‟s secret key and access policy is attached to the ciphertext. If attributes in the secret key of a user satisfy the policy then only the user can decrypt the ciphertext. However, such scenario also necessitates periodic updating of the secret key with the changing attributes. According to our observations, the existing attempts at doing so are not efficient. In this paper, we propose a new approach to add, update or delete the value of a particular attribute efficiently without the knowledge of the other attributes.

About this research paper

What this paper is about

In Ciphertext-Policy Attribute Based Encryption (CP-ABE), attributes are attached to the user‟s secret key and access policy is attached to the ciphertext. If attributes in the secret key of a user satisfy the policy then only the user can decrypt the ciphertext. However, such scenario also necessitates periodic updating of the secret key with the changing attributes. According to our observations, the existing attempts at doing so are not efficient. In this paper, we propose a new approach to add, update or delete the value of a particular attribute efficiently without the knowledge of the other attributes.

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OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

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Method / approach

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Main findings

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Available abstract

In Ciphertext-Policy Attribute Based Encryption (CP-ABE), attributes are attached to the user‟s secret key and access policy is attached to the ciphertext. If attributes in the secret key of a user satisfy the policy then only the user can decrypt the ciphertext. However, such scenario also necessitates periodic updating of the secret key with the changing attributes. According to our observations, the existing attempts at doing so are not efficient. In this paper, we propose a new approach to add, update or delete the value of a particular attribute efficiently without the knowledge of the other attributes.

Key concepts: Ciphertext, Attribute-based encryption, Computer science, Key (lock), Encryption, Semantic security, Computer security, Theoretical computer science

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