The fault in our DES

Published date : 6. Mai 2020 23:44
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 420 11. Januar 2021 12:59
arpascal https://arnaud.sh 1690 31. Januar 2021 19:37
Unactive 470 30. Oktober 2021 15:31
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1075 6. November 2021 23:58
reveng https://twitter.com/revengsh 855 8. Februar 2022 21:15
S_in https://twitter.com/sin_infosec 910 10. März 2022 00:47
clinche https://github.com/clinche 1800 17. März 2022 17:45
sam0verfl0w https://github.com/Unam3dd 875 23. März 2022 13:36
pixailz@420v3rfl0w https://github.com/Pixailz 880 24. März 2022 11:39
asoursou https://github.com/ChuOkupai 470 8. Juli 2022 00:50
Asterion64 350 13. Oktober 2022 21:28
hsabir-xoreaxeax https://github.com/lenartlola 1555 18. Oktober 2022 18:44
riblanc 1015 19. Februar 2023 17:10
asarandi https://github.com/asarandi 1910 8. Mai 2023 08:02
MinjaeLee https://github.com/MinjeaLee 1825 30. Oktober 2024 03:35
ikkiw 1060 25. Mai 2025 11:34
WanZKey https://github.com/WanZKey 270 17. September 2025 18:54