Paper 2014/951 Original: eprint.iacr.org/2014/951 ↗
Modified Alternating Step Generators with Non-Linear Scrambler
Abstract
Pseudorandom generators, which produce keystreams for stream ciphers by the exclusive-or sum of output bits from alternately clocked linear feedback shift registers, are vulnerable to cryptanalysis. In order to increase their resistance to attacks, we introduce a nonlinear scrambler at the output of these generators. The role of the scrambler plays the nonlinear feedback shift register. In addition, we propose the Modified Alternating Step Generator (MASG1S) built with the nonlinear scrambler and regularly or irregularly clocked linear feedback shift registers with nonlinear filtering functions.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2014-11-20: last updated
- 2014-11-20: published
- Short URL
- https://ia.cr/2014/951
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2014/951,
author = {Robert Wicik and Tomasz Rachwalik and Rafał Gliwa},
title = {Modified Alternating Step Generators with Non-Linear Scrambler},
howpublished = {Cryptology {ePrint} Archive, Paper 2014/951},
year = {2014},
url = {https://eprint.iacr.org/2014/951}
}