Donjon CTF: picoHSM series write-up (3/3)

Here is my write-up on the last challenge of the picoHSM series, “picoHSM On Steroids”: The decrypt feature is now accessible, since the PIN has been retrieved (13372020) from the previous challenge. A message requires to be decrypted using the available keys. However, among all the usable keys (indexed from 0 to 7 included), there