Comparing Lattices and Bilinear Parings in CP-ABE

Ciphertext-Policy Attribute-Based Encryption enables fine-grained access control by binding ciphertext decryption to user attributes. While most practical schemes are pairing-based and rely on assumptions vulnera- ble to quantum attacks, lattice-based approaches offer post-quantum secu- rity at the cost of reduced expressiveness. In this work, we present the first direct benchmark of open-source implementations from both families across diverse hardware, assessing their performance toward the design of practical quantum-resilient access control systems.