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 420 Jan. 11, 2021, 12:59 p.m.
arpascal https://arnaud.sh 1690 Jan. 31, 2021, 7:37 p.m.
Unactive 470 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1075 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 855 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 910 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1800 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 875 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 880 March 24, 2022, 11:39 a.m.
asoursou https://github.com/ChuOkupai 470 July 8, 2022, 12:50 a.m.
Asterion64 350 Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1555 Oct. 18, 2022, 6:44 p.m.
riblanc 1015 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 1910 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1825 Oct. 30, 2024, 3:35 a.m.
ikkiw 1060 May 25, 2025, 11:34 a.m.
WanZKey https://github.com/WanZKey 270 Sept. 17, 2025, 6:54 p.m.