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 390 Jan. 11, 2021, 12:59 p.m.
arpascal https://arnaud.sh 1585 Jan. 31, 2021, 7:37 p.m.
Unactive 445 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1020 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 785 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 845 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1780 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 830 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 845 March 24, 2022, 11:39 a.m.
asoursou https://github.com/ChuOkupai 450 July 8, 2022, 12:50 a.m.
Asterion64 340 Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1460 Oct. 18, 2022, 6:44 p.m.
riblanc 1205 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 1780 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1695 Oct. 30, 2024, 3:35 a.m.
ikkiw 985 May 25, 2025, 11:34 a.m.
WanZKey https://github.com/WanZKey 250 Sept. 17, 2025, 6:54 p.m.
Dueshell 420 Dec. 22, 2025, 9:11 a.m.
Ardcord 1195 Jan. 6, 2026, 2:22 p.m.
skav https://www.logogenie.fr 1740 Jan. 6, 2026, 3:14 p.m.