Please proceed to the sha256 folder in week3. Your job is now to compute HMAC and provide this to a receiver.
Your first need to compute the HMAC for the encrypted data encrypted.user. We provide a template code template.py but it has not finished yet. Your job is to complete this script and run. Once you run the file, you will get the HMAC for encrypted.user stored as hmac.user file.
Now your job is to send the HMAC to the receiver. You will use launcher. It will ask the filename of HMAC hmac.user, send it to the (virtual) receiver, and checks if the HMAC is the same as the HMAC that launcher will compute with encrypted.user.
If successful, you will get the flag.
Good luck!