Paper 2008/128 Original: eprint.iacr.org/2008/128 ↗
A Chosen IV Attack Using Phase Shifting Equivalent Keys against DECIM v2
Abstract
DECIM v2 is a stream cipher submitted to the ECRYPT stream cipher project (eSTREAM) and ISO/IEC 18033-4. No attack against DECIM v2 has been proposed yet. In this paper, we propose a chosen IV attack against DECIM v2 using a new equivalent key class. Our attack can recover an $80$-bit key with a time complexity of $2^{79.90}$ when all bits of the IV are zero. This result is the best one on DECIM v2.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2008-04-16: last updated
- 2008-03-25: published
- Short URL
- https://ia.cr/2008/128
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2008/128,
author = {Hidehiko Nakagami and Ryoichi Teramura and Toshihiro Ohigashi and Hidenori Kuwakado and Masakatu Morii},
title = {A Chosen IV Attack Using Phase Shifting Equivalent Keys against DECIM v2},
howpublished = {Cryptology {ePrint} Archive, Paper 2008/128},
year = {2008},
url = {https://eprint.iacr.org/2008/128}
}