I found this site & the software it gives. Trojan, virus free & also free for non commercial purpose.
Since we all mining with electricity & i thought this may help to reduce some.
I just downloaded & using it for few hours & see no difference.https://grano.la/software/how_it_works.php
U can try & please give feedback.
I also found another software which is given away free, says it can encrypt empty folder & we can drag & drop files by giving password.
Installed, but not tried.
Grab when its free.
Also virus,trojan free.http://www.tipradar.com/download-cryptainer-le-free-encryption-software.html
Feedbacks & bitcoins are always welcome.