Journal on Communications ›› 2014, Vol. 35 ›› Issue (7): 157-163.doi: 10.3969/j.issn.1000-436x.2014.07.019

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Integral attack on MIBS block cipher

Zhi-shu PAN1,3,Jian-sheng GUO2,3,Jin-ke CAO3,Wei LUO3,4   

  1. 1 Xi'an Satellite Control Center, Xi'an 710043, China
    2 Science and Technology on Information Assurance Laboratory,Beijing 100000, China
    3 PLA Information Engineering University, Zhengzhou 450001, China
    4 Unit 78179 of PLA, Dujiangyan 611830, China
  • Online:2014-07-25 Published:2017-06-24
  • Supported by:
    The Scientific Innovation Talents Foundation of Henan Province

Abstract:

The security of the block cipher MIBS against integral attack was analyzed and a 5-round distinguisher of MIBS was founded. Considering the equivalent structure of Feistel structure and the relation of master key and round key in the key expansion algorithm of MIBS, it applied integral attack to 10 rounds of MIBS and gave the attack algorithm. The data and time complexities of 10 round attack on MIBS-64 are 228and 252.7respectively. The data and time com-plexities of 10 round attack on MIBS-80 are 2 28.2and 2 53.2respectively. These results demonstrate that integral attack on 10-round MIBS is no immunity, both rounds and data complexity of this integral attack are better than the integral at-tack existing.

Key words: block cipher, cryptanalysis, integral attack, MIBS

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