Comparison of CKKS scheme between Pyfhel and TenSeal

[Rahn80643]

Hi,

I’m trying to compare CKKS scheme between Pyfhel and TenSeal in Python. The experiment settings are:

128 security level
Polynomial degree (N) = 8192
First Mod Size (Q0) = 60
Scaling Mod Size = 49
Multiplicative depth = 2
Two float arrays, each has 1000 elements. One constant
The following execution time are measured:

Enc: encode + encrypt
AddCC: add two ciphertext
MultCC: multiply two ciphertext
MultCConst: multiply one ciphertext and a constant
DecAddCC: decrypt AddCC
DecMultCC: decrypt MultCC
DecMultCConst: decrypt MultCConst
Each operation is executed 500 times and taken average with 12th Gen Intel® Core™ i7-12700KF CPU.

Based on the result, time taken for Pyfhel is longer than TenSeal, especially for decryption.

May I ask what may be the potential cause that makes Pyfhel takes more time compared to TenSeal?

Thank you