Let's say that I do trust GitHub as the third party. Is it possible to ask GitHub itself to sign the executable with a specific key created for a given workflow, and that only GitHub owns? Maybe it already signs it. I'll look into it.
(My instance won’t fetch content from lemmy.world, I’m not sure why… That’s why I switched to this account)
All other methods require trust (in either the developer or w.r.t. github actions towards github).
Hopefully some day I will be able to create reproducible builds independently of github. But I am thinking that their workflows are reproducible builds, correct? So, anyone should be able to fork the project and run the workflow and it will build the program in the same way. I am O.K with the user needing to trust GitHub on this - it really is me who I worry about. I don't want to tell someone that they have to trust me. I want to be able to remove blind trust from my own personal contribution. The program itself is built on top of many dependencies, so the user is also implicitly trusting a large amount of maintainers.
The drawback is of course, that to verify whether your binaries are good, someone needs to rebuild the software, but it is a good tool to build and maintain trust in your signed binaries, especially if they deal with sensitive information like private keys.
In my specific scenario I'm forking a community project (a crypto wallet) that the maintainers no longer want to maintain nor share PR access to. I'm adding a patch to fix some broken hard-coded endpoints. So what I want to be able to do is to transparently say "Here is my very simple commit that you can read, and here is the executable in case you want to download the fixed wallet but are not technically savvy enough to build it". I don't have any reputation in this community, nor do I share my identity. I would prefer to be able to remove the element of trust. Asking trusted members of the community to build from source and verify the checksums would be nice, but I don't think it is such a simple thing to ask in this case.
(My instance won't fetch content from lemmy.world, I'm not sure why... That's why I switched to this account)
Thanks a lot. I have been evangelized by you and the other commenters. I see now that reproducible builds is the solution.
I now understand better the value of reproducible builds, and the more I think about it the more I realize that it is very bad that something as sensitive as a crypto wallet executable that does not follow the reproducible build standard has been going around. I do trust that the devs are not being malicious, but it is essential to have a good way to verify. Even the original github workflow is failing to build now, and new flags need to be passed to npm while building due to some openssl changes, so I'm not sure that anyone can actually reproduce the build today and get the same hash.
I'll read more about how to do it properly, and I'll try to create a Reproducible Build fork if I can actually pull it off.