Copy Protection mechanism pull request

[bambalaya]

Can GbaRunner2 read an encrypted Sd? Let say No$cash has this feature that can encrypt-decrypt Sd card, so that only who has the decrypt key has read and write. The Sd should then become available directly to GbaRUnner2 inside No$Cash system, for it to read and write. Should No$Cash do all the job? Unlocking and locking the Sd card for the entire sub-system or every Twi++ emul should also gain same privilege access for them to work correctly with read and write saves?

If Encrypt is made possible, it's very valuable to protect your property in case of theft, or Give as gift but don't want or have not all the rights for what is inside and would prefer to not allow anyone to copy over and over.