Host Protocols Direct Protocol ATCRYPTO class BLANK
April 13, 2023 at 2:39 AMBLANK instruction
Role
The BLANK instruction is used during the manufacturing process to clear all the keys in the Secure Element.
Access condition
Never (permanently disabled after manufacturing).
Note
This instruction is permanently disabled when the device exits the factory (by setting bit 2 “Lock Secure Elements” in the Fuses). Once this is done, calling this instruction returns an error.
Command
Field | Value |
---|---|
CLA | 59 (ATCRYPTO) |
INS | 01 |
Data | 1 byte: target chip. Allowed values depend on actual hardware: AE : ATAES132AEC : ATECC608A |
Response
Field | Value |
---|---|
CLA | 59 (ATCRYPTO) |
STA | 00 |
Data | None |