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Attribute-Based Encryption (ABE) enables fine-grained data access control by tying decryption rights to user attributes, but traditional ABE schemes face two critical challenges: (1) vulnerability to quantum attacks and (2) inflexible policy enforcement. We introduce a verifiable Quantum Attribute-Based Encryption (ABE) system that cryptographically binds policy evaluation to post-quantum primitives. Unlike classical ABE, our construction enforces (1) tamper-evident quantum states through Boneh-Lynn-Shacham (BLS) signatures and (2) policy integrity via Dilithium-certified circuit configurations. This dual-layer approach prevents Quantum State Tampering and Policy Bypass (QSTAPB) attacks while supporting adaptive access control through time-aware attribute encoding. We formalize the security of our hybrid quantum-classical construction under the Module Learning with Errors (Module-LWE) hardness assumption, achieving 128-bit quantum security against both polynomial-time quantum adversaries (Shor-capable) and classical runtime attackers. This work bridges the gap between quantum-enhanced access control and NIST-approved post-quantum security.

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Verifiable Quantum ABE: Binding Policy Evaluation to Post-Quantum Cryptography for Adaptive Access Control

  • 会议论文

  • 发表日期：

    2026年

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  • Gabriela Mogos

摘要

Attribute-Based Encryption (ABE) enables fine-grained data access control by tying decryption rights to user attributes, but traditional ABE schemes face two critical challenges: (1) vulnerability to quantum attacks and (2) inflexible policy enforcement. We introduce a verifiable Quantum Attribute-Based Encryption (ABE) system that cryptographically binds policy evaluation to post-quantum primitives. Unlike classical ABE, our construction enforces (1) tamper-evident quantum states through Boneh-Lynn-Shacham (BLS) signatures and (2) policy integrity via Dilithium-certified circuit configurations. This dual-layer approach prevents Quantum State Tampering and Policy Bypass (QSTAPB) attacks while supporting adaptive access control through time-aware attribute encoding. We formalize the security of our hybrid quantum-classical construction under the Module Learning with Errors (Module-LWE) hardness assumption, achieving 128-bit quantum security against both polynomial-time quantum adversaries (Shor-capable) and classical runtime attackers. This work bridges the gap between quantum-enhanced access control and NIST-approved post-quantum security.