@rzeta0 @filippo
Hardware Security Module.
Box that does cryptography and keeps keys inside a box. If anyone in the world can use it for cryptography, it doesn't really make the keys more secure. If you need a key to prove you're a person allowed to use the box, you have to keep that key safe outside the box.
And if you ask the box to sign things you didn't understand, none of it helps.
https://en.wikipedia.org/wiki/Hardware_security_module