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 435 Jan. 11, 2021, 12:59 p.m.
arpascal https://arnaud.sh 1805 Jan. 31, 2021, 7:37 p.m.
Unactive 495 Oct. 30, 2021, 3:31 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1150 Nov. 6, 2021, 11:58 p.m.
reveng https://twitter.com/revengsh 915 Feb. 8, 2022, 9:15 p.m.
S_in https://twitter.com/sin_infosec 970 March 10, 2022, 12:47 a.m.
clinche https://github.com/clinche 1050 March 17, 2022, 5:45 p.m.
sam0verfl0w https://github.com/Unam3dd 950 March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w https://github.com/Pixailz 860 March 24, 2022, 11:39 a.m.
asoursou https://github.com/ChuOkupai 500 July 8, 2022, 12:50 a.m.
Asterion64 385 Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1665 Oct. 18, 2022, 6:44 p.m.
riblanc 1085 Feb. 19, 2023, 5:10 p.m.
asarandi https://github.com/asarandi 2035 May 8, 2023, 8:02 a.m.
MinjaeLee https://github.com/MinjeaLee 1945 Oct. 30, 2024, 3:35 a.m.
ikkiw 1140 May 25, 2025, 11:34 a.m.