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	1525	Jan. 31, 2021, 7:37 p.m.
Unactive		430	Oct. 30, 2021, 3:31 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	980	Nov. 6, 2021, 11:58 p.m.
reveng	https://twitter.com/revengsh	765	Feb. 8, 2022, 9:15 p.m.
S_in	https://twitter.com/sin_infosec	820	March 10, 2022, 12:47 a.m.
clinche	https://github.com/clinche	1710	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	1405	Oct. 18, 2022, 6:44 p.m.
riblanc		1155	Feb. 19, 2023, 5:10 p.m.
asarandi	https://github.com/asarandi	1710	May 8, 2023, 8:02 a.m.
MinjaeLee	https://github.com/MinjeaLee	1625	Oct. 30, 2024, 3:35 a.m.
ikkiw		950	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		1155	Jan. 6, 2026, 2:22 p.m.
skav	https://www.logogenie.fr	1670	Jan. 6, 2026, 3:14 p.m.
timatias	https://github.com/tiagomatias930/tiagomatias930	835	March 22, 2026, 4:24 a.m.