Paper 2016/1030 Original: eprint.iacr.org/2016/1030 ↗
Novel Inner Product Encryption Resistant to Partial Collusion Attacks
Abstract
Inner product encryption (IPE) is a new cryptographic primitive initially proposed by Abdalla et al. in 2015. IPE can be classified into public-key IPE and secret-key IPE. The currently proposed PK-IPE schemes can-not resist the following collusion attack: an invalid user that holds no private key can ”buy” a combined key generated from multiple collusion adversaries, and the user can use this private key to decrypt a ciphertext. Furthermore, the user should not let the collusion adversaries know the ciphertext, and the collusion adversaries should not let the user learn their private keys. We present a new PK-IPE to resist such collusion attack. Our PK-IPE is proven secure under the selective-vector chosen-plaintext attack model. We formalize a selective vector collusion attack model to prove that our scheme is secure under this model.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2016-11-01: last updated
- 2016-11-01: published
- Short URL
- https://ia.cr/2016/1030
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2016/1030,
author = {Yuqiao Deng and Ge Song},
title = {Novel Inner Product Encryption Resistant to Partial Collusion Attacks},
howpublished = {Cryptology {ePrint} Archive, Paper 2016/1030},
year = {2016},
url = {https://eprint.iacr.org/2016/1030}
}