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heavenlyblue
on July 24, 2018
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Practical homomorphic encryption over integers (20...
Unless the database is also encrypted and provides the same homomorphism against reverse index queries.
betterunix2
on July 25, 2018
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In which case you are no longer talking about FHE. With FHE the server receives a ciphertext query and produces a ciphertext output, without ever seeing any plaintexts (not even the result of a reverse index query).
soberhoff
on July 25, 2018
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If the database was encrypted, you would need a different encrypted database for every user - again impractical.
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