[FFmpeg-cvslog] doc/git-howto.texi: Document commit signing

Michael Niedermayer git at videolan.org
Sun Aug 28 23:24:26 EEST 2022

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Tue Aug  9 21:49:04 2022 +0200| [ced0dc807eb67516b341d68f04ce5a87b02820de] | committer: Michael Niedermayer

doc/git-howto.texi: Document commit signing

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ced0dc807eb67516b341d68f04ce5a87b02820de

 doc/git-howto.texi | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/doc/git-howto.texi b/doc/git-howto.texi
index 874afabbbc..5bb39bb986 100644
--- a/doc/git-howto.texi
+++ b/doc/git-howto.texi
@@ -187,11 +187,18 @@ to make sure you don't have untracked files or deletions.
 git add [-i|-p|-A] <filenames/dirnames>
 @end example
-Make sure you have told Git your name and email address
+Make sure you have told Git your name, email address and GPG key
 git config --global user.name "My Name"
 git config --global user.email my@@email.invalid
+git config --global user.signingkey ABCDEF0123245
+ at end example
+Enable signing all commits or use -S
+ at example
+git config --global commit.gpgsign true
 @end example
 Use @option{--global} to set the global configuration for all your Git checkouts.
@@ -423,6 +430,19 @@ git checkout -b svn_23456 $SHA1
 where @var{$SHA1} is the commit hash from the @command{git log} output.
+ at chapter gpg key generation
+If you have no gpg key yet, we recommend that you create a ed25519 based key as it
+is small, fast and secure. Especially it results in small signatures in git.
+ at example
+gpg --default-new-key-algo "ed25519/cert,sign+cv25519/encr" --quick-generate-key "human@@server.com"
+ at end example
+When generating a key, make sure the email specified matches the email used in git as some sites like
+github consider mismatches a reason to declare such commits unverified. After generating a key you
+can add it to the MAINTAINER file and upload it to a keyserver.
 @chapter Pre-push checklist
 Once you have a set of commits that you feel are ready for pushing,

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