Deterministic ECDSA

Description

We ask you to evaluate the security of this storage service that is still in developpement.

Files

docker-compose.yml
decdsa.py
2.46 KiB – 104d61d49d2205dbe66c064c09933e2bb32377909714364fd5c049638c60f79e

Author

Cryptanalyse

Challenge Instructions

First, download docker-compose.yml:
curl https://hackropole.fr/challenges/fcsc2020-crypto-deterministic-ecdsa/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

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Writeups

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Date	Author	Language	Tags	Vote
2023-11-06	voydstack	🇫🇷	TeamFrance