Hermes enables constant-time global aggregations and in-place updates on homomorphically encrypted databases by embedding precomputed statistics in packed ciphertexts and using polynomial slot masking and shifting.
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Hermes: Efficient Global Homomorphic Aggregation over Mutable Packed Ciphertexts
Hermes enables constant-time global aggregations and in-place updates on homomorphically encrypted databases by embedding precomputed statistics in packed ciphertexts and using polynomial slot masking and shifting.