BaseKing

BaseKing

Infobox block cipher
name = BaseKing
designers = Joan Daemen
publish date = 1994
derived from =
derived to = NOEKEON
related to = 3-Way
key size = 192 bits
block size = 192 bits
structure = Substitution-permutation network
rounds = 11
cryptanalysis = related-key attack, power analysis

In cryptography, BaseKing is a block cipher designed in 1994 by Joan Daemen. It is very closely related to 3-Way; indeed, the two are variants of the same general cipher technique.

BaseKing has a block size of 192 bits–twice as long as 3-Way, and notably not a power of two as with most block ciphers. The key length is also 192 bits. BaseKing is an 11-round substitution-permutation network.

In Daemen's doctoral dissertation he presented an extensive theory of block cipher design, as well as a rather general cipher algorithm composed of a number of invertible transformations that may be chosen with considerable freedom. He discussed the security of this general scheme against known cryptanalytic attacks, and gave two specific examples of ciphers consisting of particular choices for the variable parameters. These ciphers are 3-Way and BaseKing.

BaseKing is susceptible to the same kind of related-key attack as 3-Way. Daemaen, Peeters, and Van Assche have also demonstrated potential vulnerabilities to differential power analysis, along with some techniques to increase the resistance of a given implementation of BaseKing to such an attack.

References

* cite paper
author = Joan Daemen
title = Cipher and Hash Function Design: Strategies based on linear and differential cryptanalysis (Ph.D. dissertation), chapter 7
publisher = Katholieke Universiteit Leuven
date = 1994
url = http://homes.esat.kuleuven.be/~cosicart/ps/JD-9500/chapter7.ps.gz
format = gzipped PostScript
accessdate = 2007-02-16
* cite conference
author = Joan Daemen, Michael Peeters, Gilles Van Assche
title = Bitslice Ciphers and Power Analysis Attacks
booktitle = 7th International Workshop on Fast Software Encryption (FSE 2000)
pages = pp.134–149
publisher = Springer-Verlag
date = 2000
location = New York City
url = http://citeseer.ist.psu.edu/648070.html
format = PDF/PostScript
accessdate = 2007-02-16


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