Open AccessMultiple Related‐Key Differential Attacks on Pure DDP‐Based Cipher
Author(s) -
Guo Jiansheng,
Luo Wei,
Wang Kun
Publication year - 2016
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2016.06.006
Subject(s) - key (lock) , differential (mechanical device) , computer science , cipher , block cipher , running key cipher , computer security , cryptography , encryption , physics , thermodynamics
By constructing three types of related‐key differential characteristics, we present three corresponding related‐key differential attacks on the cipher. As the independence of the characteristics, we could recover 64 bits of the cipher's master key with 2 58.6 chosen plain‐texts, 2 58.8 full‐round DDP‐64 encryptions and 2 12.8 bits of storage resources. To break the cipher, we only need to implement an exhaustive search for the rest 64 bits of the master key.