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 790 Jan. 5, 2020, 8:32 p.m.
Miaou 345 Jan. 7, 2020, 3:31 p.m.
Danhia 375 Jan. 7, 2020, 6:36 p.m.
nicolaslekoala https://epita.fr 390 Jan. 13, 2021, 12:33 a.m.
arpascal https://arnaud.sh 1590 Jan. 24, 2021, 8:07 p.m.
Yir 875 Jan. 25, 2021, 12:34 a.m.
molivier 495 April 9, 2021, 11:43 p.m.
42stillsucks https://www.youtube.com/watch?v=hfTAv8htci8 1025 Nov. 9, 2021, 4:29 p.m.
lmartin 1025 March 9, 2022, 11:46 a.m.
S_in https://twitter.com/sin_infosec 850 March 10, 2022, 12:05 a.m.
clinche https://github.com/clinche 1785 March 20, 2022, 2:21 p.m.
Cryptanalyse 325 May 12, 2022, 9:36 a.m.
abouthib 935 Aug. 3, 2022, 4:32 a.m.
eclypse666 495 Nov. 12, 2022, 9:11 p.m.
Ardcord 1200 March 7, 2023, 11:03 p.m.
asarandi https://github.com/asarandi 1785 May 16, 2023, 2:05 p.m.
hsabir-xoreaxeax https://github.com/lenartlola 1465 Sept. 29, 2023, 4:45 p.m.
tkondrac 315 Sept. 29, 2023, 4:46 p.m.
lemmok 495 Nov. 21, 2023, 9:26 p.m.
G3ngh1s 410 July 13, 2024, 12:11 a.m.
MinjaeLee https://github.com/MinjeaLee 1700 Sept. 24, 2024, 12:22 p.m.
ikkiw 990 May 25, 2025, 1:55 a.m.
Dueshell 420 Dec. 22, 2025, 8:35 a.m.
skav https://www.logogenie.fr 1745 Jan. 7, 2026, 8:44 a.m.