~~~ //des加密（cbc模式） public function encrypt($str,$key) { $str = $this->pkcsPadding($str, 8); $v = pack('H*', "1234567890abcdef"); $key = str_pad($key, 8, '0'); //3DES加密将8改为24 $sign = openssl_encrypt($str, 'DES-CBC', $key,OPENSSL_RAW_DATA | OPENSSL_NO_PADDING,$v); $sign = base64_encode($sign); return $sign; } //des解密（cbc模式） public function decrypt($encrypted,$key) { $encrypted = base64_decode($encrypted); $v = pack('H*', "1234567890abcdef"); $key = str_pad($key, 8, '0'); //3DES加密将8改为24 $sign = @openssl_decrypt($encrypted, 'DES-CBC', $key,OPENSSL_RAW_DATA | OPENSSL_NO_PADDING,$v); $sign = $this->unPkcsPadding($sign); $sign = rtrim($sign); return $sign; } /** * 填充 * * @param $str * @param $blocksize * @return string */ private function pkcsPadding($str, $blocksize) { $pad = $blocksize - (strlen($str) % $blocksize); return $str . str_repeat(chr($pad), $pad); } /** * 去填充 * * @param $str * @return string */ private function unPkcsPadding($str) { $pad = ord($str{strlen($str) - 1}); if ($pad > strlen($str)) { return false; } return substr($str, 0, -1 * $pad); } ~~~