Paper 2008/204 Original: eprint.iacr.org/2008/204 ↗
Cryptanalysis of the Cai-Cusick Lattice-based Public-key Cryptosystem
Abstract
In 1998, Cai and Cusick proposed a lattice-based public-key cryptosystem based on the similar ideas of the Ajtai-Dwork cryptosystem, but with much less data expansion. However, they didn't give any security proof. In our paper, we present an efficient ciphertext-only attack which runs in polynomial time against the cryptosystem to recover the message, so the Cai-Cusick lattice-based public-key cryptosystem is not secure. We also present two chosen-ciphertext attacks to get a similar private key which acts as the real private key.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2008-05-13: last updated
- 2008-05-13: published
- Short URL
- https://ia.cr/2008/204
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2008/204,
author = {Yanbin Pan and Yingpu Deng},
title = {Cryptanalysis of the Cai-Cusick Lattice-based Public-key Cryptosystem},
howpublished = {Cryptology {ePrint} Archive, Paper 2008/204},
year = {2008},
url = {https://eprint.iacr.org/2008/204}
}