The safest way on transferring multiple large files from phone to encrypted exteral ssd

General Discussion
1

There might be a several ways to transfer multiple large files from android phone to the external storages encrypted via veracrypt(or other encryption tools)

The first way is, just open sys-usb directly, and moves every files one-by-one in sys-usb qubes, and qvm-move to another qubes. If I do not use other third-party apps, then probably this is the only way. Because android phone could not be directly mounted to other qubes rather than sys-usb.

The other way is using “syncthing” as many other threads recommend. I thought this is the best way to address my problem, but unfortunately, syncthing on android will not be updated anymore from Dec. 4, 2024. You could see the decision of the developer in Github/syncthing-android. Of course, the latest version works and it’s still enough to use, but I worry about future potential unstableness.

So, I would like to ask the good alternatives to tackle my problem. Could you recommend me some ways? Thanks.

2

Syncthing-fork works better anyway.

1 Like
3

Yep, I was wrong. I didn’t check the F-droid. But there is a syncthing-fork, indeed.

Thanks.

4

No need for individual file transfers. You can qvm-move a directory.

There’s a fork for android. Switch to that.

I never presume to speak for the Qubes team.
When I comment in the Forum I speak for myself.

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5

If you use a Bluetooth adapter, you could attach it to a disposable, then send the files from the phone. In this way, you don’t need to use directly sys-usb.

Once you have them in the disposable, you can send them anywhere you want.

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6

Thanks for another possible solution. I have some questions.

  1. I really don’t know about the current exact security status of Bluetooth technology, so I worry that it could be more vulnerable to possible security risk(likewise monitoring/hijacking).
  2. Wouldn’t it be slow if I transfer some large files( >= half of GiB?) via Bluetooth?

Thanks.

7
  1. I really don’t know about the current exact security status of Bluetooth technology, so I worry that it could be more vulnerable to possible security risk(likewise monitoring/hijacking).

It is proprietary, i.e. just as distrusted as pretty much any USB device. Exactly because of that, it seems better to attach it to its own disposable, rather than to sys-usb.

It might be better to use a USB 3.0 adapter, as USB 3 has better security. AFAIK, USB 2 devices can “sniff” each other.

  1. Wouldn’t it be slow if I transfer some large files( >= half of GiB?) via Bluetooth?

A faster alternative might be WiFi. There are also USB<->Ethernet adapters.

1 Like
8

Thanks for everyone.

I decide to use syncthing via ethernet connection. Fortunately, I found unused LAN card in my house.

9

you can use kde connect too.