Host Protocols Direct Protocol ATCRYPTO class SET PRIVATE KEY
September 3, 2025 at 8:28 AMSET PRIVATE KEY instruction
Role
This instruction allows to write an ECC private keys into the ATECC Secure Element.
Access condition
Depending on the configuration-defined access conditions and on the type of host interface (Local / Remote), this instruction may either be freely usable, restricted to communications authenticated by HostCommAdminKey only, or disabled.
Command
| Field | Value |
|---|---|
| CLA | 59 (ATCRYPTO) |
| INS | 41 |
| Data byte 0 | Key index (00 to 0D) |
| Data bytes 1..32 | Private Key value (32 bytes) |