SET KEY ADMIN instruction

Role

The SET KEY ADMIN instruction allows to change the HostCommAdminKey if the device uses the ATAES Secure Element to store its authentication keys.

Access condition

Never (permanently disabled after manufacturing). Use the CHANGE KEY instruction instead.

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 11
Data New key value (AES-128 - 16 bytes)