The Error Link to heading
When you try to decrypt something using gpg and if gpg is reading the input from a pipe, like this echo "something encrypted" | gpg --decrypt, it fails with the
following error
gpg: public key decryption failed: Inappropriate ioctl for device
gpg: decryption failed: Inappropriate ioctl for device
The solution Link to heading
This happens because GPG does not know where to read the input from, simply set the env variable GPG_TTY.
export GPG_TTY=$(tty)
If you use GPG more often and if you would like to persist this environment variable, append it to your ~/.zshrc or ~/.bashrc