RT Journal Article
A1 Rongjia Li
A1 Chenhui Jin

PB iet
T1 Meet-in-the-middle attacks on round-reduced tweakable block cipher Deoxys-BC
JN IET Information Security
VO 13
IS 1
SP 70
OP 75
AB Deoxys-BC is a tweakable block cipher designed by Jean et al. at ASIACRYPT 2014 within the TWEAKEY framework. Then Deoxys-BC is used in the CAESAR finalist Deoxys. In this study, the authors consider the security of Deoxys-BC against meet-in-the-middle attack in the single-key setting. Using the idea that a chosen tweak difference allows to cancel a difference in the state, they can construct 5-round meet-in-the-middle distinguisher on Deoxys-BC-128-128 which can be extended to attack on 8-round Deoxys-BC-128-128. Moreover, they construct 6-round meet-in-the-middle distinguisher on Deoxys-BC-256-128 which can be extended to attack on 10-round Deoxys-BC-256-128. As far as the authors know, these are the best attacks against Deoxys-BC in the single-key setting.
K1 Deoxys-BC-256-128
K1 meet-in-the-middle distinguisher
K1 meet-in-the-middle attack
K1 round-reduced tweakable block cipher Deoxys-BC
K1 Deoxys-BC-128-128
DO https://doi.org/10.1049/iet-ifs.2018.5091
UL https://digital-library.theiet.org/;jsessionid=1te5vab5l5swm.x-iet-live-01content/journals/10.1049/iet-ifs.2018.5091
LA English
SN 1751-8709
YR 2019
OL EN