Open AccessKey‐dependent side‐channel cube attack on CRAFT
Author(s) -
Pang KokAn,
AbdulLatip Shekh Faisal
Publication year - 2021
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.2019-0539
Subject(s) - block cipher , side channel attack , hamming weight , key space , key (lock) , craft , computer science , hamming distance , cipher , hamming code , cube (algebra) , channel (broadcasting) , computer security , cryptography , computer network , mathematics , algorithm , encryption , block code , combinatorics , art , decoding methods , visual arts
CRAFT is a tweakable block cipher introduced in 2019 that aims to provide strong protection against differential fault analysis. In this paper, we show that CRAFT is vulnerable to side‐channel cube attacks. We apply side‐channel cube attacks to CRAFT with the Hamming weight leakage assumption. We found that the first half of the secret key can be recovered from the Hamming weight leakage after the first round. Next, using the recovered key bits, we continue our attack to recover the second half of the secret key. We show that the set of equations that are solvable varies depending on the value of the key bits. Our result shows that 99.90% of the key space can be fully recovered within a practical time.