PHP pfx秘密鍵cer公開鍵SHA 256 WithRSA署名チェックアルゴリズム

暗号化署名

	//url      
	//pad     
	$certs = array();
    openssl_pkcs12_read(file_get_contents($url), $certs, $psd);
    if(!$certs){
        return ;
    }
	//data       
	//binarySignature       
    if (openssl_sign(utf8_encode($data), $binarySignature, $certs['pkey'], OPENSSL_ALGO_SHA256)) {
        return bin2hex($binarySignature);
    } 

復号チェック

	$sign_old = '       ';
	$str = ‘       ’；
	$cer= file_get_contents(    );
	$pem =  '-----BEGIN CERTIFICATE-----'.PHP_EOL
        .chunk_split(base64_encode($cer), 64, PHP_EOL)
        .'-----END CERTIFICATE-----'.PHP_EOL;
    $pubkeyid = openssl_get_publickey($pem);
    $len = strlen($sign_old );
    $signature= pack("H" . $len, $sign_old );
    $mark = (bool)openssl_verify(
        $str,
        $signature,
        $pubkeyid,
        OPENSSL_ALGO_SHA256
    );
    if($mark){
        var_dump($str);
    }