alt Hacker NewsIt would be reasonably "secure" if it is encrypted on a physically private network using in-house _modified_ _mainstream_ encryption algorithm, then after an over-the-air transfer then you can store it on a third party could under the control of foreign interests. Oh, don't forget the file names have to be encrypted too.
Everything else is, I am sorry to say, BS.
> in-house _modified_ _mainstream_ encryption algorithm
Why would a company without cryptographic expertise modifying an existing algorithm without any particular goal in mind just to be different, produce something more secure than the winning solution in an open cryptographic competition?
> directory names
And file structure too, preferably. Incremental sync could be done with XTS mode.