使用java编写的LSB图像信息隐藏算法演示程序，可以将任何符合大小限制的文件拆分为一个一个bit隐藏到非压缩bmp图像中。支持在隐藏前通过zip类对文件进行压缩-prepared by the use of LSB image information hidden algorithm demo program, can be any size restrictions with the document for a split hidden bit of a non-compressed bm

java下编写QRCode源程序，有二维码生成方法、解读方法及测试demo，不需修改，可直接运行。,java source QRCode prepared, there are two-dimensional code generation method, reading method and test demo, no changes can be directly run.

3DES加密Demo!!!!!!!!!!!!!!!!!!,3DESDemo!!!!!!!!!!!!!!!!!!

java实现sm4完整的demo,完整版(Demo implemented by Java)