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4.实验结论和问题解答4.1实验结论对项目使用进行说明。用户运行项目可以进入主界面看到如图15所示的选择欢迎界面。如果用户点击加密按钮则跳转到加密界面。在进入加密界面时，用户会看到系统给出的输入格式提示框，指示用户进行格式正确的输入。提示框如图16所示。加密界面如图17所示。在加密界面用户会看到“请...

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1.实验目的1.1实验要求1.编程实现DES加密和解密算法，并使用DES加解密算法实现3DES加解密算法2.选择一种填充方式，对需要加密的文件进行填充（解密要去掉填充部分）。3.DES的加解密的工作模式，采用密码分组链接（CBC）模式4.读取/写入被加密/解密文件时，采用字节流的形式进...

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