Hardware Security Unit Inter-System Binding for Trusted Computing

The patent extends the hardware security unit's functionality from securing only local devices to establishing trusted relationships across multiple devices. By introducing binding information that links hardware security units of different devices, the system achieves multi-functionality: it maintains original device security while adding inter-device trust capability. The binding information acts as a universal credential that enables trusted operations across device boundaries.

The patent performs binding and key establishment in advance before actual data transfer operations. The binding information is pre-configured in hardware security units, and trusted relationships are established beforehand. When data needs to be transferred, the security framework is already in place, eliminating the need for cumbersome real-time key management and preventing transmission security hazards. This preliminary action enables secure data transfer without requiring users to manually manage keys during the transfer process.

The patent implements automatic encryption and decryption through the binding mechanism. When data is transmitted between bound devices, the hardware security units automatically perform cryptographic operations based on the pre-established trusted relationship. The user simply needs to initiate the transfer, and the system handles all security operations autonomously. This self-service approach maintains transmission simplicity while eliminating security hazards, as the encrypted channel is automatically established without requiring user awareness of cryptographic details.