BRASP combines Hilbert-curve prefix encoding with dual-server index shuffling to support efficient Boolean range queries over encrypted spatial data while hiding search and access patterns.
IEEE Transactions on In- formation Forensics and Security14(4), 870–885 (2018)
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BRASP: Boolean Range Queries over Encrypted Spatial Data with Access and Search Pattern Privacy
BRASP combines Hilbert-curve prefix encoding with dual-server index shuffling to support efficient Boolean range queries over encrypted spatial data while hiding search and access patterns.