= 5.3.0, PHP 7) */ class Prpcrypt { public $key; function __construct($k) { $this->key = base64_decode($k . "="); } function Prpcrypt($k) { $this->key = base64_decode($k . "="); } public function encrypt($text, $corpid) { try { //获得16位随机字符串,填充到明文之前 $random = $this->getRandomStr(); $text = $random . pack("N", strlen($text)) . $text . $corpid; $iv = substr($this->key, 0, 16); // 网络字节序 // $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC); // $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, ''); //使用自定义的填充方式对明文进行补位填充 $pkc_encoder = new PKCS7Encoder; $text = $pkc_encoder->encode($text); // mcrypt_generic_init($module, $this->key, $iv); // //加密 // $encrypted = mcrypt_generic($module, $text); // mcrypt_generic_deinit($module); // mcrypt_module_close($module); $encrypted = openssl_encrypt($text, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv ); //print(base64_encode($encrypted)); //使用BASE64对加密后的字符串进行编码 return array(ErrorCode::$OK, base64_encode($encrypted)); } catch (\Exception $e) { print $e; return array(ErrorCode::$EncryptAESError, null); } } public function decrypt($encrypted, $corpid) { try { $ciphertext_dec = base64_decode($encrypted); // $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, ''); $iv = substr($this->key, 0, 16); // mcrypt_generic_init($module, $this->key, $iv); // $decrypted = mdecrypt_generic($module, $ciphertext_dec); // mcrypt_generic_deinit($module); // mcrypt_module_close($module); $decrypted = openssl_decrypt ( $ciphertext_dec, 'AES-256-CBC', $this->key, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $iv ); // return $decrypted; } catch (\Exception $e) { return array(ErrorCode::$DecryptAESError, null); } try { //去除补位字符 $pkc_encoder = new PKCS7Encoder; $result = $pkc_encoder->decode($decrypted); //去除16位随机字符串,网络字节序和AppId if (strlen($result) < 16) return ""; $content = substr($result, 16, strlen($result)); $len_list = unpack("N", substr($content, 0, 4)); $xml_len = $len_list[1]; $xml_content = substr($content, 4, $xml_len); $from_corpid = substr($content, $xml_len + 4); } catch (\Exception $e) { print $e; return array(ErrorCode::$DecryptAESError, null); } if ($from_corpid != $corpid) return array(ErrorCode::$ValidateSuiteKeyError, null); return array(0, $xml_content); } function getRandomStr() { $str = ""; $str_pol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz"; $max = strlen($str_pol) - 1; for ($i = 0; $i < 16; $i++) { $str .= $str_pol[mt_rand(0, $max)]; } return $str; } } ?>