US Patent 11308241 Security data generation based upon software unreadable registers

The present disclosure describes a security device including: a hardware-based data reading circuitry that acquires, through hardware-level interaction, security data source based on a software unreadable register; and a first security data generator that generates first security data based on the security data source. Furthermore, the present disclosure also describes a security device including: a second security data generator that generates second security data; and a hardware-based data writing circuitry that writes, through hardware-level interaction, the second security data into a software unreadable register.