International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Jiazhe Chen

Affiliation: CNITSEC

Publications

Year
Venue
Title
2013
FSE
2012
FSE
2010
EPRINT
Practical-time Attack on the Full MMB Block Cipher
Modular Multiplication based Block Cipher (MMB) is a block cipher designed by Daemen \emph{et al.} as an alternative to the IDEA block cipher. In this paper, we give a practical-time attack on the full MMB with adaptive chosen plaintexts and ciphertexts. By the constructive sandwich distinguisher for 5 of the 6 rounds of MMB with amazingly high probability 1, we give the key recovery attack on the full MMB with data complexity $2^{40}$ and time complexity $2^{13.4}$ MMB encryptions. Then a rectangle-like sandwich attack on the full MMB is presented, with $2^{66.5}$ chosen plaintexts, $2^{64}$ MMB encryptions and $2^{70.5}$ memory bytes. By the way, we show an improved differential attack on the full MMB with data complexity of $2^{96}$ chosen plaintexts and ciphertexts, time complexity $2^{64}$ encryptions and $2^{66}$ bytes of memory.

Coauthors

Dawu Gu (1)
Keting Jia (1)
Leibo Li (1)
Wei Li (1)
Ya Liu (1)
Zhiqiang Liu (1)
Xiaoyun Wang (3)
Meiqin Wang (1)
Hongbo Yu (1)