Security chip firmware update method and device

Abstract

The present disclosure provides a security chip firmware update method and device. The method is applied to the security chip in the local device, and the method includes: obtaining firmware update data of the security chip sent by the local network device, the firmware update data is the data downloaded from the certificate authority CA by the local network device, and the firmware update data includes : Firmware update package with signature; use the public key infrastructure PKI security mechanism to perform security verification on the firmware update package; when the firmware update package is verified to pass the security verification, use the firmware update package to perform firmware update. Based on the PKI architecture setting, the security chip does not need to establish a real-time network connection with the CA, that is, the cloud, during the firmware update process, avoiding the problem in the background technology that increases the work pressure of the cloud based on multiple network connections and multiple password establishments. This improves the stability of the upgrade transmission and reduces the firmware update time of the security chip.

Description

technical field [0001] The present disclosure relates to the field of software technology, in particular to a method and device for updating firmware of a security chip. Background technique [0002] With the continuous development of science and technology, a variety of security chips have been applied to IoT (The Internet of Things, Internet of Things) devices for security verification of network data received by IoT devices. At present, the remote firmware update of the security chip is mainly implemented by using the standard process defined in the TSM (Trusted Service Manager, Trusted Service Management) and GP (Global Platform, Global Platform Organization) specifications 1 . [0003] Specifically, after the developer updates the firmware of the security chip, he releases the firmware update package of the security chip to the TSM platform. The TSM platform establishes a real-time connection with the security chip in the IoT device, and encrypts the firmware update pac...

AI Technical Summary

Problems solved by technology

[0004] IoT devices and local network devices are usually connected using wireless networks. It is difficult to establish stable and fast data transmission based on wireless networks, resulting in network interruption between the security chip and the TSM platform. The TSM platform needs to re-establish a network connection with the security chip to establish a new network. The key encrypts the firmware update package before it can be sent to the security chip

Multiple network connections and multiple key establishments increase the working pressure of the TSM platform, prolong the firmware update time of the security chip, and reduce the user experience

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