GPG in PHP

Hi

I need to sign a textfile with GPG in PHP. I found out, that I have to use the following command in shell:

gpg -u nova --homedir /home/username/.gnupg --passphrase -fd < /home/username/public_html/test/passphrase.txt --clearsign /home/username/public_html/test/text.txt

But when I try to use exec in PHP, I don't get any answer and the command is not executed.

Can someone help me here?

Thanks
Michael

 

 

 

 

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