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 425 Jan. 11, 2021, 12:59 p.m.
arpascal https://arnaud.sh 1700 Jan. 31, 2021, 7:37 p.m.
Unactive 475 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1085 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 865 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 920 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1810 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 885 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 890 March 24, 2022, 11:39 a.m.
asoursou https://github.com/ChuOkupai 475 July 8, 2022, 12:50 a.m.
Asterion64 360 Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1565 Oct. 18, 2022, 6:44 p.m.
riblanc 1025 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 1920 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1835 Oct. 30, 2024, 3:35 a.m.
ikkiw 1070 May 25, 2025, 11:34 a.m.