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 405 Jan. 11, 2021, 12:59 p.m.
arpascal https://arnaud.sh 1640 Jan. 31, 2021, 7:37 p.m.
Unactive 460 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1060 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 825 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 880 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1845 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 855 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 865 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 1510 Oct. 18, 2022, 6:44 p.m.
riblanc 1240 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 1845 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1760 Oct. 30, 2024, 3:35 a.m.
ikkiw 1030 May 25, 2025, 11:34 a.m.
WanZKey https://github.com/WanZKey 260 Sept. 17, 2025, 6:54 p.m.
Dueshell 445 Dec. 22, 2025, 9:11 a.m.