## CryptoDB

### Paper: Finding Characteristic Polynomials with Jump Indices

Authors: Steve Babbage Matthew Dodd URL: http://eprint.iacr.org/2006/010 Search ePrint Search Google Jansen introduced a technique for building LFSRs that can be clocked a large number of times with a single simple operation. These may be useful in the construction of stream ciphers based on clock-controlled LFSRs. However, for LFSR sizes of typical interest, it appears generally hard to find such jumping LFSRs with particular desired parameters. In this note we explain a trick which we used to find the jumping LFSRs in MICKEY and MICKEY-128, and which may be useful for future applications.
##### BibTeX
@misc{eprint-2006-21504,
title={Finding Characteristic Polynomials with Jump Indices},
booktitle={IACR Eprint archive},
keywords={MICKEY, stream cipher, ECRYPT, irregular clocking},
url={http://eprint.iacr.org/2006/010},
note={ steve.babbage@vodafone.com 13161 received 9 Jan 2006, last revised 13 Jan 2006},
author={Steve Babbage and Matthew Dodd},
year=2006
}