Proposal for Quantum Ciphertext-Policy Attribute-Based Encryption

TL;DR

This paper introduces a novel quantum ciphertext-policy attribute-based encryption scheme leveraging quantum key distribution and error correction, addressing the lack of efficient quantum ABE solutions and incorporating dynamic access structures.

Contribution

It proposes the first efficient quantum CP-ABE scheme using QKD and quantum error correction, including a semi-quantum variant and dynamic access structures.

Findings

First quantum CP-ABE scheme using QKD and quantum error correction

Includes a semi-quantum version of the scheme

Introduces dynamic access structures in quantum ABE

Abstract

A Quantum Ciphertext-Policy Attribute-Based Encryption scheme (QCP-ABE) has been presented. In classical domain, most of the popular ABE schemes are based on the hardness of the Bilinear Diffie-Hellman Exponent problem, which has been proven to be vulnerable against Shor's algorithm. Recently, some quantum safe ABE schemes have been proposed exploiting the Lattice problem. However, no efficient Quantum Attribute-Based Encryption scheme has been reported till date. In this backdrop, in the present initiative, we propose a quantum CP-ABE scheme exploiting Quantum Key Distribution (QKD) and Quantum Error Correcting code. A Semi Quantum version of the scheme has also been considered. Finally, we introduced dynamic access structure in our proposed protocols.