Paper 2021/680

Efficient Attribute Based Encryption for Boolean Circuits

Alexandru Ionita


We provide a new technique for secret sharing and reconstruction for Boolean circuits, applicable in ABE systems. We show that our construction holds for Key-policy ABE and can be adapted also to Ciphertext-policy ABE. This is the most efficient solution for Attribute Based Encryption for circuits access structures using bilinear maps. Our KP-ABE system has decryption key of linear size in the number of attributes, and public parameters linear in the circuit size (Two public values for each FO-gate). We prove that our scheme is secure under the decisional bilinear Diffie-Hellman Assumption in the Selective Set Model.

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-- withdrawn --
Public-key cryptography
Publication info
Preprint. MINOR revision.
attribute-based encryptionpublic-key cryptographysecret sharingbilinear mapsaccess control
Contact author(s)
alexandru p ionita @ gmail com
2022-02-01: withdrawn
2021-05-25: received
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