Recycling

Published date : Jan. 5, 2020, 4:29 p.m.
They told us to discard our keys but we find it more eco-friendly to reuse them.

Hint: The flag is inside 42CTF{} and messages are in english.

Solved by

Username Website Score Date
reveng https://twitter.com/revengsh 825 Jan. 5, 2020, 8:32 p.m.
Miaou 360 Jan. 7, 2020, 3:31 p.m.
Danhia 395 Jan. 7, 2020, 6:36 p.m.
nicolaslekoala https://epita.fr 405 Jan. 13, 2021, 12:33 a.m.
arpascal https://arnaud.sh 1640 Jan. 24, 2021, 8:07 p.m.
Yir 910 Jan. 25, 2021, 12:34 a.m.
molivier 520 April 9, 2021, 11:43 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1060 Nov. 9, 2021, 4:29 p.m.
lmartin 1055 March 9, 2022, 11:46 a.m.
S_in https://twitter.com/sin_infosec 880 March 10, 2022, 12:05 a.m.
clinche https://github.com/clinche 1845 March 20, 2022, 2:21 p.m.
Cryptanalyse 340 May 12, 2022, 9:36 a.m.
abouthib 960 Aug. 3, 2022, 4:32 a.m.
eclypse666 515 Nov. 12, 2022, 9:11 p.m.
Ardcord 1065 March 7, 2023, 11:03 p.m.
asarandi https://github.com/asarandi 1845 May 16, 2023, 2:05 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1510 Sept. 29, 2023, 4:45 p.m.
tkondrac 320 Sept. 29, 2023, 4:46 p.m.
lemmok 515 Nov. 21, 2023, 9:26 p.m.
G3ngh1s 425 July 13, 2024, 12:11 a.m.
MinjaeLee https://github.com/MinjeaLee 1760 Sept. 24, 2024, 12:22 p.m.
ikkiw 1030 May 25, 2025, 1:55 a.m.
Dueshell 445 Dec. 22, 2025, 8:35 a.m.