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	380	Jan. 11, 2021, 12:59 p.m.
arpascal	https://arnaud.sh	1520	Jan. 31, 2021, 7:37 p.m.
Unactive		425	Oct. 30, 2021, 3:31 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	975	Nov. 6, 2021, 11:58 p.m.
reveng	https://twitter.com/revengsh	760	Feb. 8, 2022, 9:15 p.m.
S_in	https://twitter.com/sin_infosec	815	March 10, 2022, 12:47 a.m.
clinche	https://github.com/clinche	1705	March 17, 2022, 5:45 p.m.
sam0verfl0w	https://github.com/Unam3dd	790	March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w	https://github.com/Pixailz	810	March 24, 2022, 11:39 a.m.
asoursou	https://github.com/ChuOkupai	475	July 8, 2022, 12:50 a.m.
Asterion64		325	Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1400	Oct. 18, 2022, 6:44 p.m.
riblanc		1150	Feb. 19, 2023, 5:10 p.m.
asarandi	https://github.com/asarandi	1705	May 8, 2023, 8:02 a.m.
MinjaeLee	https://github.com/MinjeaLee	1620	Oct. 30, 2024, 3:35 a.m.
ikkiw		945	May 25, 2025, 11:34 a.m.
WanZKey	https://github.com/WanZKey	245	Sept. 17, 2025, 6:54 p.m.
Dueshell		410	Dec. 22, 2025, 9:11 a.m.
Ardcord		1150	Jan. 6, 2026, 2:22 p.m.
skav	https://www.logogenie.fr	1665	Jan. 6, 2026, 3:14 p.m.
timatias	https://github.com/tiagomatias930/tiagomatias930	830	March 22, 2026, 4:24 a.m.