Cryptanalysis of NORX v2.0
نویسندگان
چکیده
منابع مشابه
Cryptanalysis of Reduced NORX
NORX is a second round candidate of the ongoing CAESAR competition for authenticated encryption. It is a nonce based authenticated encryption scheme based on the sponge construction. Its two variants denoted by NORX32 and NORX64 provide a security level of 128 and 256 bits, respectively. In this paper, we present a state/key recovery attack for both variants with the number of rounds of the cor...
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In this paper, we analyse the higher order differential properties of NORX, an AEAD scheme submitted to CAESAR competition. NORX is a sponge based construction. Previous efforts, by the designers themselves, have focused on the first order differentials and rotational properties for a small number of steps of the NORX core permutation, which turn out to have quite low biases when extended to th...
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This paper introduces NORX, a novel authenticated encryption scheme supporting arbitrary parallelism degree and based on ARX primitives, yet not using modular additions. NORX has a unique parallel architecture based on the monkeyDuplex construction, with an original domain separation scheme for a simple processing of header/payload/trailer data. Furthermore, NORX specifies a dedicated datagram ...
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NORX is one of the fifteen authenticated encryption algorithms that have reached the third round of the CAESAR competition. NORX is built using the sponge-based Monkey Duplex construction. In this note we analyze the core permutation F . We show that it has rotational symmetries on different structure levels. This yields simple distinguishing properties for the permutation, which propagate with...
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ژورنال
عنوان ژورنال: Journal of Cryptology
سال: 2018
ISSN: 0933-2790,1432-1378
DOI: 10.1007/s00145-018-9297-9