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openssl_x509_verify
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openssl_x509_verify
PHP 7 >= 7.4.0, PHP 8
openssl_x509_verify - Verifies digital signature of x509 certificate against a public key
Manual
Code Examples
Example #1 openssl_x509_verify example
<?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"; } }
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Function openssl_x509_verify:
Manual
Code Examples
OpenSSL Functions
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openssl_spki_export_challenge
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openssl_spki_new
openssl_spki_verify
openssl_verify
openssl_x509_check_private_key
openssl_x509_checkpurpose
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openssl_x509_export
openssl_x509_fingerprint
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