帮忙将php函数转成go方法？

public function encrypt($input,$key){
        $size = mcrypt_get_block_size (MCRYPT_3DES, MCRYPT_MODE_ECB );
        $input = $this->pkcs7_pad($input, $size);
        $key = base64_decode($key);
        $td = @mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_ECB, '');
        @mcrypt_generic_init($td, $key,'');
        $data = mcrypt_generic($td, $input);
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        return strtoupper(bin2hex($data));
    }