我正在尝试测试我在此处找到的这个示例,以便我可以在客户端直接上传,而无需用户使用 Google Cloud Storage 登录。
表示的所有常量都有正确的值,路径正确且内容不为空。
我得到的错误:
openssl_sign(): supplied key param cannot be coerced into a private key
我实现的功能是:
public static function storageURL( $id, $method = 'GET', $duration = 10 ) {
$key = file_get_contents(self::KEY_FILE);
$pkey = openssl_get_privatekey($key, 'notasecret');
$expires = time( ) + $duration;
$content_type = ($method == 'PUT') ? 'application/x-www-form-urlencoded' : '';
$to_sign = ($method . "\n" .
/* Content-MD5 */ "\n" .
$content_type . "\n" .
$expires . "\n" .
'/'.self::BUCKET_NAME.'/' . $id);
$signature = '*Signature will go here*';
if (!openssl_sign( $to_sign, $signature, $pkey, 'sha256' ))
{
error_log( 'openssl_sign failed!' );
$signature = '<failed>';
} else {
$signature = urlencode( base64_encode( $signature ) );
}
return ('https://'.self::BUCKET_NAME.'.commondatastorage.googleapis.com/' .
$id .
'?GoogleAccessId=' . self::SERVICE_ACCOUNT_NAME .
'&Expires=' . $expires . '&Signature=' . $signature);
}