DES加密解密

using system;

using system.drawing;

using system.collections;

using system.componentmodel;

using system.windows.forms;

using system.data;

using system.io;

using system.security.cryptography;

private static byte deskey=new byte;

private static byte desiv=new byte;

public static string encode(string encode_string)

public static string decode(string encode_string)

private void button1_click(object sender, system.eventargs e)

catch(system.exception ee)

}private void button2_click(object sender, system.eventargs e)

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