Method for accessing intelligent equipment by using timeliness password in semi-offline environment
A smart device, time-sensitive technology, applied to synchronous send/receive encryption devices, time registers, key distribution, can solve the problems of increasing the cost or power consumption of smart devices, and difficulty in user memory and use, and achieve the effect of low cost
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[0031] figure 1 A schematic diagram of the application environment of this method is given. The smart device in the system itself does not need to ensure a stable and reliable connection with the server. When the data must be synchronized, the manager's mobile phone can be used to approach the device to complete the communication. When the user needs to log in to the device for authentication, the user connects to the server to obtain a time-limited password, and uses the keyboard on the smart device to enter this password to complete the login.
[0032] figure 2 The server-side password calculation flow chart of this method is given. Before applying this method, the smart device and the server have already synchronized the following data: the year reference value Y b , key K, intraday offset value D v . Among them, Y b Is an integer value representing the benchmark value of the year, such as 2019; K is the key string used for signing, which can use mature cryptographi...
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