Anti-copy method for embedded device program

Abstract

The invention relates to an anti-copy method for an embedded device program. The method comprises: firstly, storing an embedded device ID and License information in a hidden region, and reading device ID information to an RAM region from the hidden region after the device program performs authorization; secondly, calculating the License information according to the read device ID information and an authorization algorithm; and finally, comparing the calculated License information with the License information in the hidden region, and if the calculated License information is the same as the License information in the hidden region, the program entering a running state, or otherwise, performing authorization requesting. According to the method, the ID and the License are stored in the hidden region and technically protected, and the program is subjected to authorization management through the ID and the License; and the program stealer does not have a password, so that the hidden region cannot be accessed, data copy also cannot be realized, and further the program is protected. The method is simple and feasible, and can effectively protect an authorization process only by processing a storage mechanism of the ID and the License information without the need for complex encryption and decryption of the algorithm and addition of an anti-copy mechanism in a process and a thread.

Description

technical field [0001] The invention relates to an anti-copy method for embedded device programs, which belongs to the technical field of embedded devices. Background technique [0002] Embedded system programs are written into devices using customized methods, and are used in large-scale systems such as control, monitoring devices, and factories. With the expansion of its application fields, the risk of piracy also increases. It is necessary to provide an embedded The method of program anti-copy is used to prevent this kind of risk. However, the current program operation process with authorization protection is as follows: figure 1 As shown, the device authorization validity calculation program identifies the ID and License information, and the program can be run after confirmation. ID and license information are generally stored in read-only memory, which is written when leaving the factory, which is relatively limited by hardware, and although the addition of authorizat...

AI Technical Summary

Problems solved by technology

Therefore, the protection of the program through the mechanism is complex, and in order to consider the anti-copy, the anti-copy mechanism is added to the process and thread, and the implementation process is cumbersome.

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