Attribute-Based Encryption for Circuits from Multilinear Maps

Amit Sahai; Brent Waters

Paper 2012/592

Attribute-Based Encryption for Circuits from Multilinear Maps

Amit Sahai and Brent Waters

Abstract

In this work, we provide the first construction of Attribute-Based Encryption (ABE) for general circuits. Our construction is based on the existence of multilinear maps. We prove selective security of our scheme in the standard model under the natural multilinear generalization of the BDDH assumption. Our scheme achieves both Key-Policy and Ciphertext-Policy variants of ABE. Our scheme and its proof of security directly translate to the recent multilinear map framework of Garg, Gentry, and Halevi.

Note: We added in a translation of our scheme to the Garg, Gentry, Halevi graded encoding setting.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): amitsahai @ gmail com
History: 2012-12-14: last of 6 revisions; 2012-10-25: received; See all versions
Short URL: https://ia.cr/2012/592
License: CC BY

BibTeX

@misc{cryptoeprint:2012/592,
      author = {Amit Sahai and Brent Waters},
      title = {Attribute-Based Encryption for Circuits from Multilinear Maps},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/592},
      year = {2012},
      url = {https://eprint.iacr.org/2012/592}
}