English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, we present a novel ciphertext-policy attribute basedencryption (CP-ABE) scheme that offers a flexible access structure. Ourproposed scheme incorporates an access tree as its access control policy,enabling fine-grained access control over encrypted data. The security of ourscheme is provable under the hardness assumption of the decisionalRing-Learning with Errors (R-LWE) problem, ensuring robust protection againstunauthorized access. CP-ABE is a cryptographic technique that allows dataowners to encrypt their data with access policies defined in terms ofattributes. Only users possessing the required attributes can decrypt andaccess the encrypted data. Our scheme extends the capabilities of CP-ABE byintroducing a flexible access structure based on an access tree. This structureenables more complex and customizable access policies, accommodating a widerrange of real-world scenarios. To ensure the security of our scheme, we rely onthe decisional R-LWE problem, a well-established hardness assumption incryptography. By proving the security of our scheme under this assumption, weprovide a strong guarantee of protection against potential attacks.Furthermore, our proposed scheme operates in the standard model, which means itdoes not rely on any additional assumptions or idealized cryptographicprimitives. This enhances the practicality and applicability of our scheme,making it suitable for real-world deployment. We evaluate the performance andefficiency of our scheme through extensive simulations and comparisons withexisting CP-ABE schemes. The results demonstrate the effectiveness andscalability of our proposed approach, highlighting its potential for secure andflexible data access control in various domains.

Quantum Resistant Ciphertext-Policy Attribute-Based Encryption Scheme with Flexible Access Structure