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yurchenko dot anton at gmail dot com ¶
16 years ago
I also spent hours when trying to find the reason of error:

"error getting private key". 



Sometimes this error appeared, sometimes not. 



My solution is using the realpath() for every parameter of openssl_pkcs7_sign. In my case the code looks like:



<?php

$Certif_path = 'certificate/mycertificate.pem';



$clearfile = "certificate/random_name";

$encfile = $clearfile . ".enc";

$clearfile = $clearfile . ".txt";



// ---- 

// -- fill $clearfile with the mail to be signed ...

// ----



openssl_pkcs7_sign(realpath($clearfile), 

                           realpath('.').'/'.$encfile, // because $encfile does not exist yet we cannot use realpath($encfile);

                           'file://'.realpath($Certif_path),

                           

                           array('file://'.realpath($Certif_path), PUBLIC_KEY), 

                           

                           array("To" => TO_EMAIL,

                                 "From" => FROM_EMAIL,

                                 "Subject" => ""), 

                           

                           PKCS7_DETACHED));



?>
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