منابع مشابه
Practically secure Feistel ciphers
In this paper we give necessary design principles to be used, when constructing secure Feistel ciphers. We introduce a new concept, practical security against linear and di erential attacks on Feistel ciphers. We give examples of such Feistel ciphers (practically) resistant to di erential attacks, linear attacks and other attacks.
متن کاملPractically Secure Feistel Cyphers
In this paper we give necessary design principles to be used, when constructing secure Feistel ciphers. We introduce a new concept, practical security against linear and differential attacks on Feistel ciphers. We give examples of such Feistel ciphers (practically) resistant to differential attacks, linear attacks and other attacks.
متن کاملComplementing Feistel Ciphers
In this paper, we propose related-key differential distinguishers based on the complementation property of Feistel ciphers. We show that with relaxed requirements on the complementation, i.e. the property does not have to hold for all keys and the complementation does not have to be on all bits, one can obtain a variety of distinguishers. We formulate criteria sufficient for attacks based on th...
متن کاملSecurity Analysis of Key-Alternating Feistel Ciphers
We study the security of key-alternating Feistel ciphers, a class of key-alternating ciphers with a Feistel structure. Alternatively, this may be viewed as the study of Feistel ciphers where the pseudorandom round functions are of the form Fi(x⊕ ki), where ki is the (secret) round key and Fi is a public random function that the adversary is allowed to query in a black-box way. Interestingly, ou...
متن کاملOn Lai-Massey and quasi-Feistel ciphers
We introduce a newnotion called a quasi-Feistel cipher, which is a generalization of the Feistel cipher, and contains the Lai–Massey cipher as an instance. We show that most of the works on the Feistel cipher can be naturally extended to the quasi-Feistel cipher. From this, we give a new proof for Vaudenay’s theorems on the security of the Lai–Massey cipher, and also we introduce for Lai–Massey...
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ژورنال
عنوان ژورنال: DAIMI Report Series
سال: 1994
ISSN: 2245-9316,0105-8517
DOI: 10.7146/dpb.v13i472.6945