[TODO]
Generate a private key
openssl genrsa -out key.pem 2048
Generate a public key
openssl rsa -in key.pem -pubout -outform PEM -out pub_key.pem
Convert the private key to PKCS#8 format
openssl pkcs8 -topk8 -inform PEM -in key.pem -out key_pkcs8.pem -nocrypt