c#将对象加密为XML文件

Question

我正在尝试创建一个许可证文件，我需要加密它。

我有License对象和List<License>licenses。我需要在将流保存到xml文件之前对其进行加密，以便它不能轻易读取。

我发现了这个帖子:MSDN代码:将类数据写入XML文件(Visual c#)

public class Book
{
   public string title;
   static void Main()
   {
      Book introToVCS = new Book();
      introToVCS.title = "Intro to Visual CSharp";
      System.Xml.Serialization.XmlSerializer writer = 
         new System.Xml.Serialization.XmlSerializer(introToVCS.GetType());
      System.IO.StreamWriter file =
         new System.IO.StreamWriter("c:\IntroToVCS.xml");
      writer.Serialize(file, introToVCS);
      file.Close();
   }
}

和这篇文章:CodeProject:在c#中使用CryptoStream

写入xml文件:

FileStream stream = new FileStream(�C:\test.txt�, 
         FileMode.OpenOrCreate,FileAccess.Write);
DESCryptoServiceProvider cryptic = new DESCryptoServiceProvider();
cryptic.Key = ASCIIEncoding.ASCII.GetBytes(�ABCDEFGH�);
cryptic.IV = ASCIIEncoding.ASCII.GetBytes(�ABCDEFGH�);
CryptoStream crStream = new CryptoStream(stream,
   cryptic.CreateEncryptor(),CryptoStreamMode.Write);

byte[] data = ASCIIEncoding.ASCII.GetBytes(�Hello World!�);
crStream.Write(data,0,data.Length);
crStream.Close();
stream.Close();

读取xml文件:

FileStream stream = new FileStream(�C:\test.txt�, 
                              FileMode.Open,FileAccess.Read);
DESCryptoServiceProvider cryptic = new DESCryptoServiceProvider();
cryptic.Key = ASCIIEncoding.ASCII.GetBytes(�ABCDEFGH�);
cryptic.IV = ASCIIEncoding.ASCII.GetBytes(�ABCDEFGH�);
CryptoStream crStream = new CryptoStream(stream,
    cryptic.CreateDecryptor(),CryptoStreamMode.Read);
StreamReader reader = new StreamReader(crStream);
string data = reader.ReadToEnd();
reader.Close();
stream.Close();

我很难把这两者结合起来。有人能帮我一下吗?

Answer 1

实际上，您应该考虑使用EncryptedXml类。不是加密XML本身，而是加密XML内容。

加密可能需要不同的加密强度、密钥库等方法。遵循MSDN文档中的示例。这不是一个简短的实现，但它运行得非常好。