MMB (cipher)

MMB
General
Designers	Joan Daemen
First published	1993
Derived from	IDEA
Successors	ABC
Cipher detail
Key sizes	128 bits
Block sizes	128 bits
Structure	Substitution-permutation network^[1]
Rounds	6
Best public cryptanalysis
Key recovery using 2⁶⁷ chosen plaintexts^[2]

In cryptography, MMB (Modular Multiplication-based Block cipher) is a block cipher designed by Joan Daemen as an improved replacement for the IDEA cipher.^[3] Modular multiplication is the central element in the design. Weaknesses in the key schedule were identified by Eli Biham, and this, together with the cipher's not having been designed to resist linear cryptanalysis, meant that other designs were pursued instead, such as 3-Way.

MMB has a key size and block size of 128 bits.

References

↑ Slide 4
↑ K. Jia and J. Chen and M. Wang and X. Wang (2010), Practical-time Attack on the Full MMB Block Cipher (PDF), retrieved 2010-04-24
↑ Joan Daemen, René Govaerts, Joos Vandewalle (1993). "Block Ciphers Based on Modular Arithmetic" (PDF/PostScript). Proceedings of the 3rd Symposium on: State and Progress of Research in Cryptography. Fondazione Ugo Bordoni. pp. 80–89. Retrieved 2007-02-14.

M. Wang; J. Nakahara & Y. Sun (2009). "Cryptanalysis of the Full MMB Block Cipher" (PDF). Selected Areas in Cryptography 2009. Springer-Verlag. pp. 231–248. Retrieved 2010-04-24.

External links

Paulo Barreto's comments on MMB
Chapter of Daemen's PhD thesis dealing with MMB (Postscript format) (The specification of MMB appears in section 11.5

Block ciphers (security summary)

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

Less common algorithms	Camellia CAST-128 IDEA RC2 RC5 RC6 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 Kuznyechik 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 Prince Q RC6 REDOC Red Pike S-1 SAFER SAVILLE SC2000 SHACAL SHARK Simon SM4 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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