REMOTE AUTHENTICATION MODE NEGOTIATION METHOD FOR COMBINED DEVICE, AND RELATED DEVICE

Embodiments of this application disclose a remote attestation mode negotiation method for a combined device and a related device. The combined device may include at least a first unit. A process in which the combined device and a remote attestation device determine, through negotiation, a target remote attestation mode to be used for remote attestation includes: The first unit sends a mode negotiation request message to the remote attestation device; the remote attestation device determines the target remote attestation mode with reference to a mode negotiation request, generates a mode negotiation response message, and sends the mode negotiation response message to the first unit; and the first unit determines the remote attestation mode based on the mode negotiation response message. In this way, a target remote attestation manner to be used subsequently can be determined through negotiation between the combined device and the remote attestation device, to provide a data basis for subsequently and sequentially performing remote attestation on the combined device, and perform more reliable remote attestation on the combined device.