SignFile Method
Signs a file.
Object Oriented Interface
public function doSignFile($sourcefile, $destfile, $detached);
Procedural Interface
secureblackbox_pgpwriter_do_signfile($res, $sourcefile, $destfile, $detached);
Remarks
Use this method to sign a file and store the signed message in another file.
Use SigningKeys to provide the signing keys.
Please note that you might need to provide a passphrase to decrypt your signing key. This can be done via KeyPassphraseNeeded event, or by assigning the passphrase to the key object's Passphrase property.