mirror of
https://github.com/go-gitea/gitea
synced 2024-11-01 07:44:25 +00:00
172 lines
5.1 KiB
Markdown
172 lines
5.1 KiB
Markdown
---
|
|
date: "2019-08-17T10:20:00+01:00"
|
|
title: "GPG Commit Signatures"
|
|
slug: "signing"
|
|
weight: 20
|
|
toc: false
|
|
draft: false
|
|
menu:
|
|
sidebar:
|
|
parent: "advanced"
|
|
name: "GPG Commit Signatures"
|
|
weight: 20
|
|
identifier: "signing"
|
|
---
|
|
|
|
# GPG Commit Signatures
|
|
|
|
**Table of Contents**
|
|
|
|
{{< toc >}}
|
|
|
|
Gitea will verify GPG commit signatures in the provided tree by
|
|
checking if the commits are signed by a key within the gitea database,
|
|
or if the commit matches the default key for git.
|
|
|
|
Keys are not checked to determine if they have expired or revoked.
|
|
Keys are also not checked with keyservers.
|
|
|
|
A commit will be marked with a grey unlocked icon if no key can be
|
|
found to verify it. If a commit is marked with a red unlocked icon,
|
|
it is reported to be signed with a key with an id.
|
|
|
|
Please note: The signer of a commit does not have to be an author or
|
|
committer of a commit.
|
|
|
|
This functionality requires git >= 1.7.9 but for full functionality
|
|
this requires git >= 2.0.0.
|
|
|
|
## Automatic Signing
|
|
|
|
There are a number of places where Gitea will generate commits itself:
|
|
|
|
- Repository Initialisation
|
|
- Wiki Changes
|
|
- CRUD actions using the editor or the API
|
|
- Merges from Pull Requests
|
|
|
|
Depending on configuration and server trust you may want Gitea to
|
|
sign these commits.
|
|
|
|
## Installing and generating a GPG key for Gitea
|
|
|
|
It is up to a server administrator to determine how best to install
|
|
a signing key. Gitea generates all its commits using the server `git`
|
|
command at present - and therefore the server `gpg` will be used for
|
|
signing (if configured.) Administrators should review best-practices
|
|
for gpg - in particular it is probably advisable to only install a
|
|
signing secret subkey without the master signing and certifying secret
|
|
key.
|
|
|
|
## General Configuration
|
|
|
|
Gitea's configuration for signing can be found with the
|
|
`[repository.signing]` section of `app.ini`:
|
|
|
|
```ini
|
|
...
|
|
[repository.signing]
|
|
SIGNING_KEY = default
|
|
SIGNING_NAME =
|
|
SIGNING_EMAIL =
|
|
INITIAL_COMMIT = always
|
|
CRUD_ACTIONS = pubkey, twofa, parentsigned
|
|
WIKI = never
|
|
MERGES = pubkey, twofa, basesigned, commitssigned
|
|
|
|
...
|
|
```
|
|
|
|
### `SIGNING_KEY`
|
|
|
|
The first option to discuss is the `SIGNING_KEY`. There are three main
|
|
options:
|
|
|
|
- `none` - this prevents Gitea from signing any commits
|
|
- `default` - Gitea will default to the key configured within
|
|
`git config`
|
|
- `KEYID` - Gitea will sign commits with the gpg key with the ID
|
|
`KEYID`. In this case you should provide a `SIGNING_NAME` and
|
|
`SIGNING_EMAIL` to be displayed for this key.
|
|
|
|
The `default` option will interrogate `git config` for
|
|
`commit.gpgsign` option - if this is set, then it will use the results
|
|
of the `user.signingkey`, `user.name` and `user.email` as appropriate.
|
|
|
|
Please note: by adjusting git's `config` file within Gitea's
|
|
repositories, `SIGNING_KEY=default` could be used to provide different
|
|
signing keys on a per-repository basis. However, this is clearly not an
|
|
ideal UI and therefore subject to change.
|
|
|
|
### `INITIAL_COMMIT`
|
|
|
|
This option determines whether Gitea should sign the initial commit
|
|
when creating a repository. The possible values are:
|
|
|
|
- `never`: Never sign
|
|
- `pubkey`: Only sign if the user has a public key
|
|
- `twofa`: Only sign if the user logs in with two factor authentication
|
|
- `always`: Always sign
|
|
|
|
Options other than `never` and `always` can be combined as a comma
|
|
separated list.
|
|
|
|
### `WIKI`
|
|
|
|
This options determines if Gitea should sign commits to the Wiki.
|
|
The possible values are:
|
|
|
|
- `never`: Never sign
|
|
- `pubkey`: Only sign if the user has a public key
|
|
- `twofa`: Only sign if the user logs in with two factor authentication
|
|
- `parentsigned`: Only sign if the parent commit is signed.
|
|
- `always`: Always sign
|
|
|
|
Options other than `never` and `always` can be combined as a comma
|
|
separated list.
|
|
|
|
### `CRUD_ACTIONS`
|
|
|
|
This option determines if Gitea should sign commits from the web
|
|
editor or API CRUD actions. The possible values are:
|
|
|
|
- `never`: Never sign
|
|
- `pubkey`: Only sign if the user has a public key
|
|
- `twofa`: Only sign if the user logs in with two factor authentication
|
|
- `parentsigned`: Only sign if the parent commit is signed.
|
|
- `always`: Always sign
|
|
|
|
Options other than `never` and `always` can be combined as a comma
|
|
separated list.
|
|
|
|
### `MERGES`
|
|
|
|
This option determines if Gitea should sign merge commits from PRs.
|
|
The possible options are:
|
|
|
|
- `never`: Never sign
|
|
- `pubkey`: Only sign if the user has a public key
|
|
- `twofa`: Only sign if the user logs in with two factor authentication
|
|
- `basesigned`: Only sign if the parent commit in the base repo is signed.
|
|
- `headsigned`: Only sign if the head commit in the head branch is signed.
|
|
- `commitssigned`: Only sign if all the commits in the head branch to the merge point are signed.
|
|
- `approved`: Only sign approved merges to a protected branch.
|
|
- `always`: Always sign
|
|
|
|
Options other than `never` and `always` can be combined as a comma
|
|
separated list.
|
|
|
|
## Obtaining the Public Key of the Signing Key
|
|
|
|
The public key used to sign Gitea's commits can be obtained from the API at:
|
|
|
|
```sh
|
|
/api/v1/signing-key.gpg
|
|
```
|
|
|
|
In cases where there is a repository specific key this can be obtained from:
|
|
|
|
```sh
|
|
/api/v1/repos/:username/:reponame/signing-key.gpg
|
|
```
|