note 107892 added to function.openssl-pkcs7-encrypt

To build on what people have already done, below is a function that takes a from address, an array of e-mails/public keys, a subject, and a message and sends out an encrypted message using the appropriate public key. Since we're sending an encrypted message, the assumption is that what we're sending is actually critical. As a result the files used for sending the message are immediately shredded. $recipients = Array("user@example.com"=>file_get_contents("cert.pem")); $body = 'secret text'; sendSignedMail("me@examplel.com", $recipients, "Test Message", $body); //Recepients is an array of e-mail address=>Key function sendSignedMail($from, $recepients, $subject, $body){ foreach($recepients AS $email=>$key){ $tfn_in = tempnam("/tmp", "b"); $tfn_out = tempnam("/tmp", "e"); $handle = fopen($tfn_in, "w"); fwrite($handle, $body); fclose($handle); openssl_pkcs7_encrypt($tfn_in, $tfn_out, $key, array("To" => $email, "From" => $from, "Subject" => $subject), 0); $data = file_get_contents($tfn_out); //Shred the files since this is sensitive data. $handle = popen("/usr/bin/shred -n 3 -u $tfn_in", 'r'); pclose($handle); $handle = popen("/usr/bin/shred -n 3 -u $tfn_out", 'r'); pclose($handle); $parts = explode("\n\n", $data, 2);//Fixes headers in mail function mail($email, $subject, $parts[1], $parts[0]); } } ---- Server IP: 69.147.83.197 Probable Submitter: 64.94.76.45 ---- Manual Page -- http://www.php.net/manual/en/function.openssl-pkcs7-encrypt.php Edit -- https://master.php.net/note/edit/107892 Del: integrated -- https://master.php.net/note/delete/107892/integrated Del: useless -- https://master.php.net/note/delete/107892/useless Del: bad code -- https://master.php.net/note/delete/107892/bad+code Del: spam -- https://master.php.net/note/delete/107892/spam Del: non-english -- https://master.php.net/note/delete/107892/non-english Del: in docs -- https://master.php.net/note/delete/107892/in+docs Del: other reasons-- https://master.php.net/note/delete/107892 Reject -- https://master.php.net/note/reject/107892 Search -- https://master.php.net/manage/user-notes.php