去网上看了一些DZ的模版,,NND,,却是Base64加密…呵呵..有点不爽…不过..还是有方法弄出来的..瞧一瞧..

下面留下方法

Base64转换
新建一个Windows应用程序，一个文本框，两个按钮：
//添加两个CryptoStream，但顺序相反
private void btnWrite_Click(object sender, System.EventArgs e)
{
//open a file for writting to
FileStream fs=new FileStream(“I:\testfile.txt”,FileMode.Create);

//create a stream for converting to base64 encoding
ICryptoTransform transformEncode=new ToBase64Transform();
CryptoStream csEncode=new CryptoStream(fs,transformEncode,CryptoStreamMode.Write);

//create a stream for encryption
ICryptoTransform transformEncrypt=crypt.CreateEncryptor();
CryptoStream csEncrypt=new CryptoStream(csEncode,transformEncrypt,CryptoStreamMode.Write);

//create a text writer
StreamWriter w=new StreamWriter(csEncrypt);
w.Write(this.txtMessage.Text);

w.Flush();
csEncrypt.FlushFinalBlock();

w.Close();
MessageBox.Show(“文件创建成功！”);
}

//将信息转换为原来的形式，然后再JEM
private void btnRead_Click(object sender, System.EventArgs e)
{
//open a file for reading from
FileStream fs=new FileStream(“I:\testfile.txt”,FileMode.Open);

//create a stream for converting from Base64 encoding
ICryptoTransform transformDecode=new FromBase64Transform();
CryptoStream csDecode=new CryptoStream(fs,transformDecode,CryptoStreamMode.Read);

//create a cryptographic stream
ICryptoTransform transformDecrypt=crypt.CreateDecryptor();
CryptoStream csDecrypt=new CryptoStream(csDecode,transformDecrypt,CryptoStreamMode.Read);

//create a text reader
StreamReader r=new StreamReader(csDecrypt);
string text=r.ReadToEnd();
r.Close();

MessageBox.Show(“Retrived:”+text);
this.txtMessage.Text=text;
}