Paper 2021/680
Efficient Attribute Based Encryption for Boolean Circuits
Alexandru Ionita
Abstract
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.
Metadata
- Available format(s)
- -- withdrawn --
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- attribute-based encryptionpublic-key cryptographysecret sharingbilinear mapsaccess control
- Contact author(s)
- alexandru p ionita @ gmail com
- History
- 2022-02-01: withdrawn
- 2021-05-25: received
- See all versions
- Short URL
- https://ia.cr/2021/680
- License
-
CC BY