Table 6 Comparison of key and ciphertext sizes under different security levels.
From: A compact public key encryption with equality test for lattice in cloud computing
Security | Notations | Duong et al. | Roy et al. | Xiao et al. | Ours |
|---|---|---|---|---|---|
n = 64 | Public Key | \(\ge\) 0.58 Mb | 0.39 Mb | 0.19 Mb | 0.29 Mb |
Secret Key | 3.48 Mb | 3.48 Mb | 0.41 Mb | 1.74 Mb | |
Ciphertext | 6.23 Kb | 11.73 Kb | 3.14 Kb | 3.12 Kb | |
n = 128 | Public Key | \(\ge\) 2.82 Mb | 1.88 Mb | 0.94 Mb | 1.41 Mb |
Secret Key | 18.75 Mb | 18.75 Mb | 2.25 Mb | 9.38 Mb | |
Ciphertext | 15.09 Kb | 39.09 Kb | 7.59 Kb | 7.55 Kb | |
n = 256 | Public Key | \(\ge\) 17.09 Mb | 11.40 Mb | 5.69 Mb | 8.56 Mb |
Secret Key | 147.88 Mb | 147.88 Mb | 36.75 Mb | 73.94 Mb | |
Ciphertext | 45.72 Kb | 157.72 Kb | 22.97 Kb | 22.86 Kb |
