45 lines
3.1 KiB
Markdown
45 lines
3.1 KiB
Markdown
# Release
|
|
|
|
## Overview of Supply-Chain Security
|
|
|
|
As of the PrivateBin 1.0 release we [cryptographically sign](https://git-scm.com/book/uz/v2/Git-Tools-Signing-Your-Work) our git commits and tags, so that you can verify we actually developed the software. Later, we also [started signing the release archives on GitHub](https://github.com/PrivateBin/PrivateBin/issues/219) and retroactively signed all releases from 1.0 forward.
|
|
|
|
Since [release 1.6.2](https://github.com/PrivateBin/PrivateBin/releases/tag/1.6.2) our release assets additionally also are [verified with the SLSA (Supply-chain Levels for Software Artifacts) framework](https://slsa.dev/), providing an in-toto manifest of the release archive.
|
|
|
|
This achieves the following:
|
|
1. It ensures no maintainer has gone rogue and has modified/tampered with the source code before “building” the release.
|
|
2. It ensures the release is build exactly according to the source as defined by the branch that was used for the release.
|
|
This includes the workflow file defining how the release is done itself.
|
|
3. Our release should achieve [SLSA build level 3](https://slsa.dev/spec/v1.0/levels#build-l3) as it [runs on GitHub](https://slsa.dev/spec/v1.0/threats). Some more properties [are thus achieved](https://slsa.dev/spec/v1.0/threats).
|
|
|
|
For more information [see the corresponding issue](https://github.com/PrivateBin/PrivateBin/issues/1169) and [the GitHub workflow file](/.github/workflows/release.yml).
|
|
|
|
## Reproducible builds
|
|
|
|
All releases `.tar.gz` and `.zip` archives since 1.0 come with corresponding `.asc` signatures that can be used to confirm the authenticity of the fact that the release has been issued by a PrivateBin maintainer.
|
|
|
|
This uses traditional [PGP](https://en.wikipedia.org/wiki/Pretty_Good_Privacy) signatures.
|
|
|
|
## Verification
|
|
|
|
You can use the gpg signatures for verifying the reproducibility and that a maintainer in posession with that PGP private key created the release with that content:
|
|
|
|
```
|
|
$ gpg2 --verify 1.6.2.tar.gz.asc
|
|
gpg: assuming signed data in '1.6.2.tar.gz'
|
|
gpg: Signature made Fri Dec 15 06:21:08 2023 UTC
|
|
gpg: using RSA key 28CA7C964938EA5C1481D42AE11B7950E9E183DB
|
|
gpg: Good signature from "PrivateBin release (solely used for signing releases)" [unknown]
|
|
gpg: WARNING: This key is not certified with a trusted signature!
|
|
gpg: There is no indication that the signature belongs to the owner.
|
|
Primary key fingerprint: 28CA 7C96 4938 EA5C 1481 D42A E11B 7950 E9E1 83DB
|
|
```
|
|
|
|
For a more step-by-step guide in detail [see this FAQ](https://github.com/PrivateBin/PrivateBin/wiki/FAQ#how-can-i-securely-clonedownload-your-project).
|
|
|
|
SLSA verification can be performed using the [SLSA verifier](https://github.com/slsa-framework/slsa-verifier?tab=readme-ov-file#verification-for-github-builders).
|
|
|
|
## Release process
|
|
|
|
The release process is outlined in the [release checklist](https://github.com/PrivateBin/PrivateBin/wiki/Release-Checklist). The key manual steps are performed using a [Makefile](https://github.com/PrivateBin/PrivateBin/blob/master/Makefile#L31-L43) and using a [shell script](https://github.com/rugk/gittools/blob/master/signrelease.sh).
|