如何在C＃中创建加密编写器和解密读取器

Question

I am currently using XML Serialization to serialize a class instance.

I like to create an encrypt StreamWriter to replace steamwriter. Is this a good way to do it? If not what should I do?

public class PO po = new PO ();
XmlSerializer serializer = new XmlSerializer(typeof(T));
TextWriter writer = new StreamWriter(filename);
serializer.Serialize(writer, po);

Answer 1

StreamWriter is basically a wrapper around stream that provides additional APIs to convert from typed values (eg strings) to binary. As encryption often does not require knowledge of input encoding or any information other then just binary data, I would say an encrypted Stream (wrapping normal Stream ) is a better choice.

Answer 2

You can use CryptoStream class which defines a stream that links data streams to cryptographic transformations. You can find an example in the following link: http://www.obviex.com/Samples/Encryption.aspx