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	1550	Jan. 31, 2021, 7:37 p.m.
Unactive		435	Oct. 30, 2021, 3:31 p.m.
42stillsucks	https://www.youtube.com/watch?v=hfTAv8htci8	995	Nov. 6, 2021, 11:58 p.m.
reveng	https://twitter.com/revengsh	770	Feb. 8, 2022, 9:15 p.m.
S_in	https://twitter.com/sin_infosec	825	March 10, 2022, 12:47 a.m.
clinche	https://github.com/clinche	1740	March 17, 2022, 5:45 p.m.
sam0verfl0w	https://github.com/Unam3dd	805	March 23, 2022, 1:36 p.m.
pixailz@420v3rfl0w	https://github.com/Pixailz	820	March 24, 2022, 11:39 a.m.
asoursou	https://github.com/ChuOkupai	445	July 8, 2022, 12:50 a.m.
Asterion64		325	Oct. 13, 2022, 9:28 p.m.
hsabir-xoreaxeax	https://github.com/lenartlola	1425	Oct. 18, 2022, 6:44 p.m.
riblanc		1175	Feb. 19, 2023, 5:10 p.m.
asarandi	https://github.com/asarandi	1740	May 8, 2023, 8:02 a.m.
MinjaeLee	https://github.com/MinjeaLee	1655	Oct. 30, 2024, 3:35 a.m.
ikkiw		970	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		1180	Jan. 6, 2026, 2:22 p.m.
skav	https://www.logogenie.fr	1700	Jan. 6, 2026, 3:14 p.m.
timatias	https://github.com/tiagomatias930/tiagomatias930	775	March 22, 2026, 4:24 a.m.