Winternitz is coming

Description

I introduce you to the most groundbreaking and never seen before one time signature! And let me be very clear, I’ve taken great care to sign only one message. So believe me when I say there’s absolutely nothing to worry about folks. Absolutely nothing!

Files

docker-compose.yml
winternitz-is-coming.py
3.59 KiB – e44721886afea52b7b0237daf90b665a73fd53e7583e1da615d0a997c951caf4

Author

Maxime

Challenge Instructions

First, download docker-compose.yml:
curl https://hackropole.fr/challenges/fcsc2024-crypto-winternitz-is-coming/docker-compose.public.yml -o docker-compose.yml
Launch the challenge by executing in the same folder:
docker compose up
Then, in another console, access the challenge with Netcat:
nc localhost 4000

⚠️ Important: You must solve the challenge by interacting with the Docker container through the exposed network port. Any other way is not considered valid.

In case you encounter problems, please consult the FAQ.

Flag

You don't have JavaScript actived. No problem! You can check your flag like this: echo -n 'PUT_THE_FLAG_HERE' | sha256sum # possible output: b517a15bb96fa1fd6d7e6a8a31e9f1b8d01619aaa4688610e4ca4297794f3458

Writeups

I've been looking for a long time and I still can't find the flag!

You can vote for the solutions you prefer by using the on their respective pages.

Date	Author	Language	Tags	Vote
2024-04-15	poustouflan	🇫🇷	TeamFrance