File Encryption with Ionic

I have been trying to use the File Encryption native plugin for the past three days but have failed.
It uses cordova-safe plugin and I keep getting ‘plugin-not-installed’ error every time I try to call it.
I have tried using cordova plugins (cordova-safe and cordova-file-encryption) directly without the Native wrapper but have failed.

I have tested these with both Ionic 3 and Ionic 4.

So, my question, Is there any working way to encrypt files in Ionic?

Are there any alternatives to Ionic Native and Cordova?

Thanks, Appreciate any help I can get.