Signing commits¶

If you are here because you forgot to sign your commits, fear not. Check out how to sign previous commits

We use developer certificate of origin (DCO) in all hyperledger repositories, so to get your pull requests accepted, you must certify your commits by signing off on each commit.

Signing your current commit¶

$ git commit -s -m "your commit message"
To see if your commits have been signed off, run $ git log --show-signature
If you need to re-sign the most current commit, use $ git commit --amend --no-edit -s.

The -s flag signs the commit message with your name and email.

How to Sign Previous Commits¶

Use git log --show-signature to see which commits need to be signed.
Go into interactive rebase mode using $ git rebase -i HEAD~X where X is the number of commits up to the most current commit you would like to see.
You will see a list of the commits in a text file. On the line after each commit you need to sign, add exec git commit --amend --no-edit -s with the lowercase -s adding a text signature in the commit body. Example that signs both commits:
```
pick 12345 commit message
exec git commit --amend --no-edit -s
pick 67890 commit message
exec git commit --amend --no-edit -s
```

1. If you need to re-sign a bunch of previous commits at once, find the earliest unsigned commit using `git log --show-signature` and use that the HASH of the commit before it in this command: `git rebase --exec 'git commit --amend --no-edit -n -s' -i HASH`. This will sign every commit from most recent to right before the HASH.
1. You will probably need to do a force push `git push -f` if you had previously pushed unsigned commits to remote.