Terminal startup method, terminal, and signature device

Abstract

The invention discloses a terminal startup method, a terminal and a signature device. The method comprises the following steps: when a verification certificate is detected in a terminal, the terminalunsigns the verification certificate by using a preset public key to obtain an identification and a status value carried by the verification certificate; when the verification certificate is detected,the terminal unsigns the verification certificate by using a preset public key to obtain a status value carried by the verification certificate. Wherein the verification certificate is written into the terminal after the signing device signs through the preset private key; the terminal obtains a chip identification of a main chip and a current state value of the terminal; the terminal judges whether the chip identifier is the same as the identifier carried by the verification certificate and whether the current state value is the same as the state value carried by the verification certificate. If all are the same, the terminal starts normally. By adopting the application, the program start control of the terminal can be carried out by introducing a verification certificate, the anti-theftreliability is improved, a special circuit is not required to be introduced, and the cost is low.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a terminal activation method, a terminal and a signature device. Background technique [0002] At present, it is more and more common for terminals such as mobile phones to be stolen. Therefore, the anti-theft function of mobile phones has attracted more and more attention. After some mobile phones are lost, the user can remotely lock the mobile phone by enabling the anti-theft function. After locking the mobile phone, even if the mobile phone is flashed or restored to factory settings, it will be required to enter the relevant lock screen password to start when restarting, so as to play an anti-theft function. . However, the current lock screen passwords are all stored on external storage devices such as Universal Flash Storage (Universal FlashStorage, abbreviated: UFS) or embedded Multi Media Card (embedded Multi Media Card, abbreviated: eMMC), which mak...

AI Technical Summary

Problems solved by technology

However, in this way, the chip introduces special circuits and underlying mechanisms, and the implementation mechanism is more complicated, which increases the cost.

Moreover, if the storage device is replaced before the cloud is successfully locked, and a third-party read-only memory (read-only memory, abbreviation: ROM) without the cloud locking function is flashed, the stolen mobile phone cannot be locked again.

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