Paper 2014/754
Bilinear Entropy Expansion from the Decisional Linear Assumption
Lucas Kowalczyk and Allison Bishop Lewko
Abstract
We develop a technique inspired by pseudorandom functions that allows us to increase the entropy available for proving the security of dual system encryption schemes under the Decisional Linear Assumption. We show an application of the tool to Attribute-Based Encryption by presenting a Key-Policy ABE scheme that is fully-secure under DLIN with short public parameters.
Note: Prime-order construction in previous versions was broken, and has been removed.
Metadata
- Available format(s)
-
PDF
- Publication info
- Preprint. MINOR revision.
- Keywords
- Cryptographic ProtocolsAttribute Based Encryption
- Contact author(s)
- luke @ cs columbia edu
- History
- 2016-06-01: last of 6 revisions
- 2014-09-29: received
- See all versions
- Short URL
- https://ia.cr/2014/754
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2014/754, author = {Lucas Kowalczyk and Allison Bishop Lewko}, title = {Bilinear Entropy Expansion from the Decisional Linear Assumption}, howpublished = {Cryptology {ePrint} Archive, Paper 2014/754}, year = {2014}, url = {https://eprint.iacr.org/2014/754} }