自己写的文件取反加密类，对于加密不是太严格的程序来说差不多足够了，主要是用于本地消息传输。

包括从文件读数据，写入加密数据，恢复加密数据。-Himself wrote the paper check category of anti-encryption, the encryption is not very strict procedures for nearly enough, mainly for the local message transfer. Including data from the document read, write encrypted data, the restoration of encrypted data.