jesseduffield / horcrux-ui

GUI for horcrux

Horcrux

GUI for Horcrux, made with fyne.io (for the command-line version, see here)

horcrux

Split your file into encrypted horcruxes so that you don't need to remember a passcode

How it works

Horcrux has two main functions: creating horcruxes and combining horcruxes

Creating horcruxes

If I have a file called diary.txt in my current directory I can select that and split it into horcruxes, creating files like so:

diary_1_of_5.horcrux
diary_2_of_5.horcrux
...

Now you just need to disperse the horcruxes around the house on various USBs or online locations and hope you can recall where they all are! Or send them to a friend across multiple channels so there's no risk of interception.

Combining horcruxes

On the receiving end, you can then recombine the hocruxes back together to obtain the original file.

Installation

via binary release

Who this is for:

• People who need to encrypt a big sensitive file like a diary and don't expect to remember any passwords years from now (but who paradoxically will be capable of remembering where they've hidden their horcruxes)
• People who want to transmit files across multiple channels to substantially reduce the ability for an attacker to intercept
• People named Tom Riddle

FAQ

Q) This isn't really in line with how horcruxes work in the harry potter universe!

A) It's pretty close! You can't allow any one horcrux to be used to resurrect the original file (and why would you that would be useless) but you can allow two horcruxes to do it (so only off by one). Checkmate HP fans.

Q) How does this work?

A) This uses the Shamir Secret Sharing Scheme to break an encryption key into parts that can be recombined to create the original key, but only requiring a certain threshold to do so. I've adapted Hashicorp's implementation from their vault repo

Alternatives (for command-line)

• ssss. Works for keys but (as far as I know) not files themselves.
• horcrux. Looks like somebody beat me to both the name and concept, however this repo doesn't support thresholds of horcruxes

horcrux-ui's Issues

Show a better visual indicator of whether you've satisfied the threshold

Say there's 5 horcruxes in total but you only need 3 and you've selected 4. It would be good to visually indicate that all at once. Like maybe have 5 circles in a row, filled in if that index has been selected, and all green if we satisfy the threshold.

Licencing Conflict

As mentioned in this reddit comment, the project here is licensed as MIT however the Hashicorp Vault is MPL-2.0.

Add the application to apps.fyne.io?

Hello @jesseduffield. What a cool little project you have made. Really cool to see a fellow Harry Potter fan too :)

I think it would be great if you added your application to https://apps.fyne.io. The repository can be found here if you are interested :)

More convenient file selector dialog

Currently the file selector dialog is kind of small and cramped and awkward to use. This is more of an issue for https://fyne.io/ than this application but worth looking into

Support selecting a destination folder

blocked by fyne-io/fyne#941 (though it probably wouldn't be too hard to do)

Binaries not working on M1

Aside the fact the app is not verified, attempting to execute it via the command line show this error:

% open ~/Downloads/Horcrux.app
The application cannot be opened for an unexpected reason, error=Error Domain=NSOSStatusErrorDomain Code=-10661 "(null)" UserInfo={_LSLine=3762, _LSFunction=_LSOpenStuffCallLocal}

Would it be possible to provide Apple silicon compatible binaries?