Paper 2017/059 Original: eprint.iacr.org/2017/059 ↗
Adaptively Secure Recipient Revocable Broadcast Encryption with Constant size Ciphertext
Abstract
In this paper, we put forward the first adaptively secure recipient revocable broadcast encryption (RR-BE) scheme in the standard model. The scheme is adaptively secure against chosen plaintext attack (CPA) under the q-weaker Decisional Augmented Bilinear Diffie-Hellman Exponent (q-wDABDHE) assumption. Our scheme compares well with the only existing RR-BE scheme of Susilo et al. which is selectively secure in the random oracle model. More interestingly, achieving adaptive security in the standard model does not blow up the communication cost in our construction. To be more precise, the size of the ciphertext which is broadcasted by the broadcaster is constant.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2017-01-31: last updated
- 2017-01-31: published
- Short URL
- https://ia.cr/2017/059
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2017/059,
author = {Kamalesh Acharya and Ratna Dutta},
title = {Adaptively Secure Recipient Revocable Broadcast Encryption with Constant size Ciphertext},
howpublished = {Cryptology {ePrint} Archive, Paper 2017/059},
year = {2017},
url = {https://eprint.iacr.org/2017/059}
}