(PHP 7 >= 7.4.0, PHP 8)
openssl_x509_verify — 驗證 x509 憑證針對公開金鑰的數位簽章
$certificate, OpenSSLAsymmetricKey|OpenSSLCertificate|陣列|字串 $public_key): 整數
openssl_x509_verify() 驗證 certificate 憑證是否由對應於公開金鑰 public_key 的私密金鑰所簽署。
x509請參閱金鑰/憑證參數以取得有效值的清單。
public_keyOpenSSLAsymmetricKey - 由 openssl_get_publickey() 返回的金鑰
字串 - PEM 格式的金鑰 (例如 -----BEGIN PUBLIC KEY----- MIIBCgK...)
如果簽章正確，則返回 1；如果不正確，則返回 0；如果發生錯誤，則返回 -1。
| 版本 | 說明 |
|---|---|
| 8.0.0 |
certificate 現在接受 OpenSSLCertificate 實例；先前接受類型為 OpenSSL X.509 的 資源。 |
| 8.0.0 |
public_key 現在接受 OpenSSLAsymmetricKey 或 OpenSSLCertificate 實例；先前接受類型為 OpenSSL key 或 OpenSSL X.509 的 資源。 |
範例 #1 openssl_x509_verify() 範例
<?php
$hostname = "news.php.net";
$ssloptions = array(
"capture_peer_cert" => true,
"capture_peer_cert_chain" => true,
"allow_self_signed"=> false,
"CN_match" => $hostname,
"verify_peer" => true,
"SNI_enabled" => true,
"SNI_server_name" => $hostname,
);
$ctx = stream_context_create( array("ssl" => $ssloptions) );
$result = stream_socket_client("ssl://$hostname:443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $ctx);
$cont = stream_context_get_params($result);
$x509 = $cont["options"]["ssl"]["peer_certificate"];
$certparsed = openssl_x509_parse($x509);
foreach($cont["options"]["ssl"]["peer_certificate_chain"] as $chaincert)
{
$chainparsed = openssl_x509_parse($chaincert);
$chain_public_key = openssl_get_publickey($chaincert);
$r = openssl_x509_verify($x509, $chain_public_key);
if ($r==1)
{
echo $certparsed['subject']['CN'];
echo " was digitally signed by ";
echo $chainparsed['subject']['CN']."\n";
}
}
?>