"gpg: signing failed: Inappropriate ioctl for device" on MacOS with Maven

Question

I have installed GPG via Homebrew with brew install gpg. It is installed in version 2.2.17.

In my Maven POM I have this snippet:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-gpg-plugin</artifactId>
    <version>1.6</version>
    <executions>
        <execution>
            <id>sign-artifacts</id>
            <phase>verify</phase>
            <goals>
                <goal>sign</goal>
            </goals>
        </execution>
    </executions>
</plugin>

However when running mvn clean verify I get this error:

gpg: Beglaubigung fehlgeschlagen: Inappropriate ioctl for device
gpg: signing failed: Inappropriate ioctl for device

How can I fix this error?

Answer 1

在 macOS 上，您可能希望使用pinentry-macGUI 窗口来输入 pin 并可选择将 pin 存储在钥匙串中。

您可以通过 Homebrew 安装它：

brew install pinentry-mac

并在您的~/.gnupg/gpg-agent.conf配置中使用以下行启用它（如果它不存在则创建它）：

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

Answer 2

I have added

GPG_TTY=$(tty)
export GPG_TTY

to my ~/.bash_profile file. Now it is working.

See also https://github.com/Homebrew/homebrew-core/issues/14737#issuecomment-309848851