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[lee]

Hi :

This is my php program. I have some questions in line “$ok = openssl_verify($datar, $signature, $pubkeyid);”. I don’t know how to extract the $data and $ signature value from my user certificate (04.pem). Please tell me how to do it. Thank you very much.

Best regards

Peter

 

<?php

// fetch public key from certificate and ready it

$fp = fopen("cacert.pem", "r");

$cert = fread($fp, 8192);

fclose($fp);

$pubkeyid = openssl_get_publickey($cert);

 

// load user cert

 $fp = fopen("04.pem", "r");

 $cert1 = fread($fp, 8192);

 fclose($fp);

$cert2=openssl_x509_read($cert1);

$cert_data=(openssl_x509_parse($cert2));

 

// state whether signature is okay or not

$ok = openssl_verify($data, $signature, $pubkeyid);

if ($ok == 1) {

   echo "good";

} elseif ($ok == 0) {

   echo "bad";

} else {

   echo "ugly, error checking signature";

}

openssl_free_key($pubkeyid);

   openssl_x509_free( $cert2 );

?>
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