<?php class Crypt { private static $_passphrase = 'passphrase!'; private static $_pubkey = <<<EOD ここに公開鍵を EOD; private static $_prvkey = <<<EOD ここに秘密鍵を EOD; public static function encrypt($data) { $res = openssl_public_encrypt($data, $crypted, self::$_pubkey); return base64_encode($crypted); } public static function decrypt($data) { $prvkey = openssl_get_privatekey(self::$_prvkey, self::$_passphra