Embedded linux device image file verification method
An embedded device and image file technology, applied in the direction of digital data protection, etc., can solve the problems of inflexible verification methods and inconvenient real-time verification for users, and achieve the effect of improving the inability to calculate and verify image files in real time
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[0018] see figure 1 Shown, a kind of Embedded Linux device image file verification method of the present invention, after obtaining an image file to be verified and the original data of the image file to be verified, comprises the following steps:
[0019] Step 101: Calculate the file frame size required for the original data of the image file to be verified to be completely covered, the file frame is constructed from data blocks (block size) of a specific size, and the size of each data block can be It is 512bytes or 256bytes.
[0020] Step 102: Calculate the difference between the size of the file frame and the size of the original data of the image file to be verified to obtain the size of the unoccupied space in the file frame by the original data of the image file to be verified.
[0021] Step 103: Fill the unoccupied space in the file frame with 0s to complete, so that the size of the original data after filling with 0s is the same as the size of the file frame, and cal...
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