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 1710 Jan. 31, 2021, 7:37 p.m.
Unactive 475 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1090 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 870 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 925 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1820 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 895 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 900 March 24, 2022, 11:39 a.m.
asoursou https://github.com/ChuOkupai 480 July 8, 2022, 12:50 a.m.
Asterion64 370 Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1575 Oct. 18, 2022, 6:44 p.m.
riblanc 1035 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 1930 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1845 Oct. 30, 2024, 3:35 a.m.
ikkiw 1080 May 25, 2025, 11:34 a.m.