Efficient and privacy-preserving image classification using homomorphic encryption and chunk-based convolutional neural network

Journal of Cloud Computing

Advances, Systems and Applications

Table 1 Key size required for two sizes of images using different polynomial modules

Image size	polynomial modulus	All keys	Public key	Secret key	Galois keys	Relin keys
112*112	32768	6.17 MB	4.12 MB	2.06 MB	1.69 GB	61.79 MB
28*28	16384	3.09 MB	2.06 MB	1.03 MB	805.98 MB	30.93 MB

Note: There is a strong correlation between polynomial modulus and image size and key size. When using multiple polynomial moduli, different sized images require different sized keys