Paper 2006/010
Finding Characteristic Polynomials with Jump Indices
Steve Babbage and Matthew Dodd
Abstract
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.
Note: More complete references, plus one typo correction
Metadata
- Available format(s)
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- MICKEYstream cipherECRYPTirregular clocking
- Contact author(s)
- steve babbage @ vodafone com
- History
- 2006-01-13: revised
- 2006-01-10: received
- See all versions
- Short URL
- https://ia.cr/2006/010
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2006/010, author = {Steve Babbage and Matthew Dodd}, title = {Finding Characteristic Polynomials with Jump Indices}, howpublished = {Cryptology {ePrint} Archive, Paper 2006/010}, year = {2006}, url = {https://eprint.iacr.org/2006/010} }