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	385	Jan. 11, 2021, 12:59 p.m.
arpascal	https://arnaud.sh	1560	Jan. 31, 2021, 7:37 p.m.
Unactive		435	Oct. 30, 2021, 3:31 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	1005	Nov. 6, 2021, 11:58 p.m.
reveng	https://twitter.com/revengsh	775	Feb. 8, 2022, 9:15 p.m.
S_in	https://twitter.com/sin_infosec	835	March 10, 2022, 12:47 a.m.
clinche	https://github.com/clinche	1750	March 17, 2022, 5:45 p.m.
sam0verfl0w	https://github.com/Unam3dd	815	March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w	https://github.com/Pixailz	830	March 24, 2022, 11:39 a.m.
asoursou	https://github.com/ChuOkupai	445	July 8, 2022, 12:50 a.m.
Asterion64		335	Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1435	Oct. 18, 2022, 6:44 p.m.
riblanc		1185	Feb. 19, 2023, 5:10 p.m.
asarandi	https://github.com/asarandi	1750	May 8, 2023, 8:02 a.m.
MinjaeLee	https://github.com/MinjeaLee	1665	Oct. 30, 2024, 3:35 a.m.
ikkiw		975	May 25, 2025, 11:34 a.m.
WanZKey	https://github.com/WanZKey	245	Sept. 17, 2025, 6:54 p.m.
Dueshell		415	Dec. 22, 2025, 9:11 a.m.
Ardcord		1185	Jan. 6, 2026, 2:22 p.m.
skav	https://www.logogenie.fr	1710	Jan. 6, 2026, 3:14 p.m.
timatias	https://github.com/tiagomatias930/tiagomatias930	775	March 22, 2026, 4:24 a.m.