Paper 2016/844
Secure and Efficient Construction of Broadcast Encryption with Dealership
Kamalesh Acharya and Ratna Dutta
Abstract
Broadcast encryption with dealership (BED) has been proposed to achieve more innovative and scalable business models for broadcast services. It has an extensive application future. However, designing secure BED is a challenging task. The only known BED construction sofar is by Gritti et al. We aim to raise the profile of BED primitives which has not received much attention despite of its importance. This paper presents a selectively chosen plaintext attack (CPA) secure BED scheme supporting maximum number of accountability and privacy (hides the group of users from broadcaster). Our scheme is a key encapsulation mechanism and practically more efficient. It reduces the parameter sizes and computation cost compared to Gritti et al. More interestingly, the broadcaster does not need to rely on users to detect the dishonest dealer. We provide concrete security analysis of our design under reasonable assumptions.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. will appear in the proceeding of ProvSec 2016
- Keywords
- broadcast encryption with dealershipchosen plaintext attackmaximum number of accountabilityprivacy.
- Contact author(s)
- kamaleshiitkgp @ gmail com
- History
- 2016-09-06: received
- Short URL
- https://ia.cr/2016/844
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2016/844,
author = {Kamalesh Acharya and Ratna Dutta},
title = {Secure and Efficient Construction of Broadcast Encryption with Dealership},
howpublished = {Cryptology {ePrint} Archive, Paper 2016/844},
year = {2016},
url = {https://eprint.iacr.org/2016/844}
}
