forgejo/tests/integration/ssh-signing-key
Gusted b55c72828e feat(sec): Add SSH signing support for instances (#6897)
- Add support to set `gpg.format` in the Git config, via the new `[repository.signing].FORMAT` option. This is to tell Git that the instance would like to use SSH instead of OpenPGP to sign its commits. This is guarded behind a Git version check for v2.34.0 and a check that a `ssh-keygen` binary is present.
- Add support to recognize the public SSH key that is given to `[repository.signing].SIGNING_KEY` as the signing key by the instance.
- Thus this allows the instance to use SSH commit signing for commits that the instance creates (e.g. initial and squash commits) instead of using PGP.
- Technically (although I have no clue how as this is not documented) you can have a different PGP signing key for different repositories; this is not implemented for SSH signing.
- Add unit and integration testing.
  - `TestInstanceSigning` was reworked from `TestGPGGit`, now also includes testing for SHA256 repositories. Is the main integration test that actually signs commits and checks that they are marked as verified by Forgejo.
  - `TestParseCommitWithSSHSignature` is a unit test that makes sure that if a SSH instnace signing key is set, that it is used to possibly verify instance SSH signed commits.
  - `TestSyncConfigGPGFormat` is a unit test that makes sure the correct git config is set according to the signing format setting. Also checks that the guarded git version check and ssh-keygen binary presence check is done correctly.
  - `TestSSHInstanceKey` is a unit test that makes sure the parsing of a SSH signing key is done correctly.
  - `TestAPISSHSigningKey` is a integration test that makes sure the newly added API route `/api/v1/signing-key.ssh` responds correctly.

Documentation PR: forgejo/docs#1122

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6897
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>
2025-04-11 13:25:35 +00:00

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-----BEGIN OPENSSH PRIVATE KEY-----
b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
QyNTUxOQAAACBXkQvBnxcl7YstH9RO4S7++wV1u3uvLRbyHLPP9vWKhwAAAJhlmhmkZZoZ
pAAAAAtzc2gtZWQyNTUxOQAAACBXkQvBnxcl7YstH9RO4S7++wV1u3uvLRbyHLPP9vWKhw
AAAEDnOTuE2rDECN+2OsuUbQgGrMSY22tn+IF5JG5nuyJinVeRC8GfFyXtiy0f1E7hLv77
BXW7e68tFvIcs8/29YqHAAAAE2d1c3RlZEBndXN0ZWQtYmVhc3QBAg==
-----END OPENSSH PRIVATE KEY-----