求助大神，用C#写一个xml加密程序，求指教

[qq283006567]

本人新手，求教应该如何将如下代码写成完整的C#程序，用来加密和解密XML文件，代码如下，感谢。

报文采用标准的AES加密，加密的密钥: MYgGnQE2+DAS973vd1DFHg==
请查看下面的代码示例进行文件加密
2.2 C#版代码示例
public static class AESHelper
{
/// <summary>
/// 密钥
/// </summary>
private static String Key = "MYgGnQE2+DAS973vd1DFHg==";

/// <summary>
/// AES 解密
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Decrypt(string str)
{
if (string.IsNullOrEmpty(str)) return null;
Byte[] toEncryptArray = Convert.FromBase64String(str);

System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
{
Key = Convert.FromBase64String(Key),
Mode = System.Security.Cryptography.CipherMode.ECB,
Padding = System.Security.Cryptography.PaddingMode.PKCS7
};

System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateDecryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

return Encoding.UTF8.GetString(resultArray);
}

/// <summary>
/// 加密
/// </summary>
/// <param name="toEncrypt"></param>
/// <returns></returns>
public static string Encrypt(string toEncrypt)
{
byte[] toEncryptArray = Encoding.UTF8.GetBytes(toEncrypt);

System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
{
Key = Convert.FromBase64String(Key),
Mode = System.Security.Cryptography.CipherMode.ECB,
Padding = System.Security.Cryptography.PaddingMode.PKCS7
};

ICryptoTransform cTransform = rm.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
}

[E次奥]

什么鬼加密，直接序列化不就行了

[qq283006567]

本人用的是C#2010 express

[娃都会打酱油了]

你想加密成啥样子，是要对内容加密吗？

[qq283006567]

引用 2 楼 starfd 的回复:

你想加密成啥样子，是要对内容加密吗？

对的，就是对整个xml加密

[娃都会打酱油了]

string path="";
string txt = File.ReadAllText(path);
File.WriteAllText(path, Encrypt(txt));

解密就是反过来

[qq283006567]

引用 4 楼 starfd 的回复:

string path="";
string txt = File.ReadAllText(path);
File.WriteAllText(path, Encrypt(txt));

解密就是反过来

大神，求QQ