Constant KEY_CFG_ECC_LOCKABLE_OFF 

const KEY_CFG_ECC_LOCKABLE_OFF: u16 = 0x0593;

KeyConfig for ECC P-256 slots with Lockable = 0.

Used by slots 0 and 1. Sign and GenKey are PIN-gated (ReqAuth = 1, AuthKey = 5). The slot cannot be individually locked; the key can be regenerated indefinitely.