A location-based privacy-preserving query processing method for mobile cloud platforms
A processing method and privacy protection technology, applied in the field of privacy protection processing, can solve the problems of high decryption time, low computing power, limited computing power and communication ability, etc., and achieve the effect of improving query processing efficiency and reducing computing cost and communication cost.
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[0058] The technical solutions of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the embodiments.
[0059] like Figure 1 to Figure 3 As shown, a location-based privacy protection query processing method for mobile cloud platforms of the present invention includes eight steps in sequence: system initialization, data master location encryption, key generation, user key verification, user location encryption, and distance calculation , distance comparison and query result acquisition, the specific implementation steps are as follows:
[0060] Step 1. System initialization:
[0061] A credible authority TA selects and announces a degree p, and the generator is g 0 The bilinear group G of 0 , and then secretly generate a random number v 0 ∈ Z p . Based on these parameters, TA calculates the master key and public key
[0062] Step 2. Data master location encryption:
[0063] Randomly generate ...
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