openssl genrsa -idea -out jesonc.key 1024
openssl req -new -key jesonc.key -out jesonc.csr
openssl x509 -req -days 3650 -in jesonc.csr -signkey jesonc.key -out jesonc.crt
openssl rsa -in ./jesonc.key -out ./jesonc_nopass.key
openssl genrsa -idea -out jesonc.key 1024
openssl req -new -key jesonc.key -out jesonc.csr
openssl x509 -req -days 3650 -in jesonc.csr -signkey jesonc.key -out jesonc.crt
openssl rsa -in ./jesonc.key -out ./jesonc_nopass.key
https://www.bilibili.com/video/BV1k8411575T/?vd_source=d68ed178f151e80fea1e02efd205802c