BaseKing

BaseKing
General
Designers	Joan Daemen
First published	1994
Successors	NOEKEON
Related to	3-Way
Cipher detail
Key sizes	192 bits
Block sizes	192 bits
Structure	Substitution-permutation network
Rounds	11
Best public 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

Joan Daemen (1994). "Cipher and Hash Function Design: Strategies based on linear and differential cryptanalysis (Ph.D. dissertation), chapter 7" (gzipped PostScript). Katholieke Universiteit Leuven. Retrieved 16 February 2007.
Joan Daemen, Michael Peeters, Gilles Van Assche (2000). Bitslice Ciphers and Power Analysis Attacks (PDF/PostScript). 7th International Workshop on Fast Software Encryption (FSE 2000). New York City: Springer-Verlag. pp. 134–149. Retrieved 16 February 2007.

Block ciphers (security summary)

Common algorithms	AES Blowfish DES (Internal Mechanics, Triple DES) Serpent Twofish

Less common algorithms	Camellia CAST-128 IDEA RC2 RC5 SEED ARIA Skipjack TEA XTEA

Other algorithms	3-Way Akelarre Anubis BaseKing BassOmatic BATON BEAR and LION CAST-256 Chiasmus CIKS-1 CIPHERUNICORN-A CIPHERUNICORN-E CLEFIA CMEA Cobra COCONUT98 Crab Cryptomeria/C2 CRYPTON CS-Cipher DEAL DES-X DFC E2 FEAL FEA-M FROG G-DES GOST Grand Cru Hasty Pudding cipher Hierocrypt ICE IDEA NXT Intel Cascade Cipher Iraqi KASUMI KeeLoq KHAZAD Khufu and Khafre KN-Cipher Ladder-DES Libelle LOKI (97, 89/91) Lucifer M6 M8 MacGuffin Madryga MAGENTA MARS Mercy MESH MISTY1 MMB MULTI2 MultiSwap New Data Seal NewDES Nimbus NOEKEON NUSH PRESENT Q RC6 REDOC Red Pike S-1 SAFER SAVILLE SC2000 SHACAL SHARK Simon SMS4 Speck Spectr-H64 Square SXAL/MBAL Threefish Treyfer UES Xenon xmx XXTEA Zodiac

Design	Feistel network Key schedule Lai-Massey scheme Product cipher S-box P-box SPN Avalanche effect Block size Key size Key whitening (Whitening transformation)

Attack (cryptanalysis)	Brute-force (EFF DES cracker) MITM (Biclique attack, 3-subset MITM attack) Linear (Piling-up lemma) Differential (Impossible Truncated Higher-order) Differential-linear Distinguishing (Known-key) Integral/Square Boomerang Mod n Related-key Slide Rotational Timing XSL Interpolation Partitioning Davies' Rebound Weak key Tau Chi-square Time/memory/data tradeoff

Standardization	AES process CRYPTREC NESSIE

Utilization	Initialization vector Mode of operation Padding

Cryptography

History of cryptography Cryptanalysis Outline of cryptography

Symmetric-key algorithm Block cipher Stream cipher Public-key cryptography Cryptographic hash function Message authentication code Random numbers Steganography

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