CRC即循环冗余校验码（Cyclic Redundancy CRC是数据通信领域中最常用的一种差错校验码，其特征是信息字段和校验字段的长度可以任意选定。 -CRC is cyclic redundancy check code (Cyclic Redundancy CRC is the most commonly used data communications, an error check code, characterized by the information field and