As long as they're not trying to roll their own crypto, the concern is significantly lessened. I need to be convinced that this new app doesn't just rot13 every

As long as they're not trying to roll their own crypto, the concern is significantly lessened. I need to be convinced that this new app doesn't just rot13 everything and call that 'advanced new encryption'. Just explaining which established crypto you're using and where you're using it goes a long way. (And please don't let Marketing write this part - specifics matter)