linuxgnupgencryptionpassphrase

gpg decryption giving error in LINUX "can't query passphrase in batch mode"

Hi im using gpg to decrypt a file in linux, im using 

shell_exec("gpg --batch --passphrase-file $passphrase_file -d $encrypted_file");

to decrypt the file, but im getting the following errors.

gpg: gpg-agent is not available in this session
gpg: can't query passphrase in batch mode
gpg: Invalid passphrase; please try again ...
gpg: can't query passphrase in batch mode
gpg: Invalid passphrase; please try again ...
gpg: can't query passphrase in batch mode
Solution

  • This error makes it appear that the commaand doesnt like to be run using shell_exec (similar to how sudo/ssh warns about needing a tyy when run with shell_exec)::

    gpg: gpg-agent is not available in this session

    What happens if u run it directly from the shell prompt?

    Also, make sure your not in safe mode:

    shell_exec() (functional equivalent of backticks) This function is disabled when PHP is running in safe mode.

    Check with phpinfo()

    check that the function is not disabled:

    $ grep 'disable_functions' /etc/php.ini

    Edit:

    Also, try using putenv to point GNUPGHOME to your .gnupg folder.

    It could be that the php script is being run as the httpd user and the gpg is expecting the 'user' user for your site.