OpenSSL Example PHP Code - VerifySignature |
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// $data and $signature are assumed to contain the data and the signature
// fetch public key from certificate and ready it
$fp = fopen("/src/openssl-0.9.6/demos/sign/cert.pem", "r");
$cert = fread($fp, 8192);
fclose($fp);
$pubkeyid = openssl_get_publickey($cert);
// state whether signature is okay or not
$ok = openssl_verify($data, $signature, $pubkeyid);
if ($ok == 1)
echo "good";
elseif ($ok == 0)
echo "bad";
else
echo "ugly, error checking signature";
// free the key from memory
openssl_free_key($pubkeyid); |
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