SD password protect: how do?

Hi folks,
Is here somebody who know how put password into SD cards?
I’m looking for some examples.
Is here somebody who know about library that allow password protect the SD cards?
May be it already exist, sadly I have been unable to retrieve it.
Thanks in advance,


Reverse engineer from how to "break" the password:

Looks pretty simple.


Hi Ray,
thanks a lot for your answer.
I will try to take a look even if I guess it isn't that which I'm looking for.