Description
Your friend thinks he has revolutionized the field of boolean circuits conception with
his new process only using XOR gates. This “greatly simplifies the manufacturing” as
he says. One of his usecases would be a simplified generation of random functions with
good cryprographic properties.
You tell him that this is a bad idea that introduces weaknesses in his circuits! He does not believe you and challenges you to guess a circuit randomly designed using his process. The game is simple: in seach session, he generates a new big secret circuit with 128 bits of input and 256 bits of output. You are allowed to ask some questions to get outputs from inputs you provide. After these questions, it is his turn to challenge you to guess the output associated to an input he provides. If you succeed, you have won!
Files
Author
Challenge Instructions
- First, download docker-compose.yml:
curl https://hackropole.fr/challenges/fcsc2023-hardware-au-boolot/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
In case you encounter problems, please consult the FAQ.
Flag
Submit your solution
You can submit your writeup for this challenge. Read the FAQ to learn how to proceed.
You need to be logged in to submit a writeup.