Git error - gpg failed to sign data

Question

I just started using git and I install git and gpg via homebrew. For some reason, I get this error when i do git commit I looked at so many other stackoverflow

Answer 1

Refer to @sideshowbarker, and @Xavier Ho solution, I solved my problem via following steps.

Assume gpg2 installed by brew,

git config --global gpg.program gpg2
brew install pinentry
gpgconf --kill gpg-agent
gpg2 -K --keyid-format SHORT
// no key found then generate new one
gpg2 --gen-key

gpg2 -K --keyid-format SHORT 

           

.../.gnupg/pubring.gpg

sec rsa2048/0A61C6FC 2017-06-29 [SC] [expires: 2019-06-29]

git config --global user.signingkey 0A61C6FC

Reminded by my colleague, need to append

export GPG_TTY=$(tty)

to ~/.zshrc if using zsh, else append to ~/.bash_profile

---

For macOS,

the gpg2 is combined with gpg in brew and hence the gpg command is pointed to gpg2

brew install gpg2

brew info gpg

gnupg: stable 2.2.6 (bottled)

git config --global gpg.program gpg
gpg -K --keyid-format SHORT 

and there has pinentry-mac for passphrase entry

brew install pinentry-mac
vim ~/.gnupg/gpg-agent.conf

Add line

pinentry-program /usr/local/bin/pinentry-mac

Reminded by my colleague, need to append

export GPG_TTY=$(tty)

to ~/.zshrc if using zsh, else append to ~/.bash_profile