The AID is 16 bytes in length and must be unique (multiple cards should have different AIDs).
The AID is written to the Smart Card during application install, and can not be changed without
reinstalling the `SmartPGP.cap`
## The structure of the AID is described as follows
The first 6 bytes are static and always `0xD2 0x76 0x00 0x01 0x24 0x01`. The next 2 bytes represent the version of the PGP Specification, which is `0x03 0x04` for SmartPGP (PGP 3.4)
The following 2 bytes are the "Manufacturer ID"; They're supposed to be registered by OpenPGP devs, but using an unknown one doesn't cause issues, and it looks better than "Test Card".
Additionally, newer versions of OpenPGP include a new "Manufacturer Name" attribute, that is not part of the AID