video: https://www.youtube.com/watch?v=sOxaeS8mJJg
keytool -genkey -v -keystore FestivalBizerte.keystore -alias com.festivalbizerte.com -keyalg RSA -keysize 2048 -validity 10000
keytool -exportcert -keystore FestivalBizerte.keystore -list -v
keytool -exportcert -alias com.festivalbizerte.com -keystore FestivalBizerte.keystore | "C:\OpenSSL-Win64\bin\openssl" sha1 -binary | "C:\OpenSSL-Win64\bin\openssl" base64