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Table 2 The performances and the sizes of the SHE scheme with our packing method for the secure inner product computation ( 6 ) (parameters of the SHE scheme are given in Table 1 )

From: Secret computation of purchase history data using somewhat homomorphic encryption

Parameters Packed Secure inner Decryption
  encryption product
(i) 3.65 ms (31.2 KB) 5.31 ms (46.8 KB) 3.47 ms
(ii) 23.03 ms (66.6 KB) 34.34 ms (99.8 KB) 22.17 ms
(iii) 48.07 ms (141.3 KB) 71.25 ms (212.0 KB) 46.35 ms
(iv) 107.25 ms (299.0 KB) 159.45 ms (448.5 KB) 103.94 ms