说明：  先前的md5_correct关于Unicode的说法不正确，此版本为验证过的真正支持Unicode的版本，修正了其他的小问题。注意文件格式仅支持ansi格式，其他格式的支持不是本类的重点。关键词：md5,CMd5,Unicode,hash
(previous md5_correct on Unicode is not correct. This version tested for the genuine support of Unicode version, the amendment of other minor problems. Attention to the file format support ansi only format, other formats are not supporting this kind of focus. Keywords : md5, CMd5, Unicode, hash)