BLANK 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 00
Data 1 byte: target chip.
Allowed values depend on actual hardware:
AA : ATAES132A
EA : ATECC608A

Response

Field Value
CLA 59 (ATCRYPTO)
STA 00
Data None