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
Creative Commons Attribution
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},
      note = {\url{https://eprint.iacr.org/2012/592}},
      url = {https://eprint.iacr.org/2012/592}
}
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