Instalar open SSL en Windows 10
https://www.ssl.com/es/c%C3%B3mo/instalar-openssl-en-windows-con-cygwin/
openssl genrsa -out clave_privada.pem 3072
openssl rsa -in clave_privada.pem -pubout -out clave_publica.pem
Fuente:
https://parzibyte.me/blog/2022/11/24/generar-par-claves-rsa-openssl-privada-publica/