Hi @developernotes
Thanks for replying to me again.The attachment is my test program. Since the size of a single attachment is limited to 2048kb, part of the library is divided into two attachments and uploaded.
My test environment: Linux version: CentOS Linux release 7.8.2003.
The encryption library and related libraries are in the accessory package.
The host hardware information is: Intel i3-9100F CPU@3.60GHz, 16GB RAM. I don’t think there are so many efficiency differences caused by the host hardware.