Clock calibration method, device and system

Abstract

The invention discloses a clock calibration method, which is applied to a server side. The method comprises the steps of: receiving a calibration request from a first client side sent by a second client side, wherein the calibration request includes the local time of the first client side and the virtual clock time of an application in the first client side; according to the server side time, determining the trusted time in the local time and the virtual clock time; and, if the trusted time is determined, generating a clock calibration packet including the trusted time, and sending the clock calibration packet to the second client side, so that the clock calibration packet is returned to the first client side through the second client side. The invention further discloses a clock calibration method applied to the client side, and a clock calibration device and system. By means of the method disclosed by the invention, the virtual clock in the application of the client side can be effectively calibrated; and thus, the application of the client side is controlled and protected.

Description

technical field [0001] The invention relates to the field of computer software, in particular to a clock calibration method, device and system. Background technique [0002] In order to protect computer software, a software authorization scheme that can be used offline - soft lock, can be used. Except for the first activation, the software needs to be online. The current defect of cloud lock and hardware lock can not only set the offline duration, but also set the number of devices bound to the soft lock by the user, which reduces a lot of setting work for developers. At the same time, the offline use method can also effectively relieve the pressure on cloud services . [0003] The soft lock contains a virtual clock, which is used to judge and control the software digital license. When the soft lock is run for the first time, the virtual clock will run according to the current local time. However, inaccurate situations may occur during the running of the virtual clock. If ...

AI Technical Summary

Problems solved by technology

[0005] However, when the soft lock is completely offline, real-time clock calibration cannot be performed. If calibration is required, it must be calibrated with local time as the base. However, local time is completely untrustworthy, so how to use local time for offline clock calibration still remains Ensuring that the time is basically accurate is an urgent problem to be solved for offline soft license activation

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