The fault in our DES

Published date : May 6, 2020, 11:44 p.m.
Our engineer did a differential fautl analysis on a smart card - or rather he began the attack.
He went on vacation before the data analysis, so now it's your task, first year intern.

We'll give you the plaintext, the ciphertext, and 32 faulted ciphertexts.
You need to recover the 64 bits key and to submit it in hexadecimal inside the 42CTF{} tag.

Example : 42CTF{1234567890ABCDEF}

Good luck.

Solved by

Username Website Score Date
nicolaslekoala https://epita.fr 410 Jan. 11, 2021, 12:59 p.m.
arpascal https://arnaud.sh 1650 Jan. 31, 2021, 7:37 p.m.
Unactive 465 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1065 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 830 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 885 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1865 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 860 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 870 March 24, 2022, 11:39 a.m.
asoursou https://github.com/ChuOkupai 460 July 8, 2022, 12:50 a.m.
Asterion64 350 Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1520 Oct. 18, 2022, 6:44 p.m.
riblanc 1250 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 1865 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1780 Oct. 30, 2024, 3:35 a.m.
ikkiw 1035 May 25, 2025, 11:34 a.m.
WanZKey https://github.com/WanZKey 265 Sept. 17, 2025, 6:54 p.m.