Dynamically retrievable cloud computing data encryption method
A data encryption and cloud computing technology, applied in electrical components, transmission systems, etc., can solve the problem that content cannot be retrieved, and achieve the effect of adding and deleting safely and ensuring confidentiality.
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[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0016] see figure 1 , the embodiment of the present invention includes:
[0017] A dynamically retrievable cloud computing data encryption method includes the following steps: the user stores the data on the cloud server, and the data is regarded as a series of n files f = (f1, . . . , fn ); assuming that the user Obtain an index program, take the file f as input, and then output a reverse index; give a search item according to the auxiliary search protocol, set the keyword as w, and use fw to represent the file col...
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