In the last few weeks I wrote several proposals to the government, to my professor, etc. I want to make a copy of this filled proposals and save them.
Instead of scanning it with my printer, making a pdf-document, writing it to an usb stick I want to use the iPhone app 'Genius Scan' and directly save the files into my google drive so that I have access to the documents from every device I am using.
I am able to encrypt the files with the app with RC4 128bit key. I read about RC4 encryption on the internet and found out that this is not the best encrytion technique at the moment. I don´t know how it works but is it enough to have this 'bad' encryption for my documents? The most personal information are my address and maybe IBAN/BIC code. Bad or good idea? Any possible ways to do it better?