C# - 从流中序列化/反序列化 DES 加密文件
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/965042/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
C# - Serializing/Deserializing a DES encrypted file from a stream
提问by djdd87
Does anyone have any examples of how to encrypt serialized data to a file and then read it back using DES?
有没有人有任何关于如何将序列化数据加密到文件然后使用 DES 读回的示例？
I've written some code already that isn't working, but I'd rather see a fresh attempt instead of pursuing my code.
我已经写了一些不起作用的代码，但我宁愿看到新的尝试而不是追求我的代码。
EDIT: Sorry, forgot to mention I need an example using XmlSerializer.Serialize/Deserialize.
编辑：对不起，忘了提到我需要一个使用 XmlSerializer.Serialize/Deserialize 的例子。
采纳答案by Bryce Kahle
Encryption
加密
public static void EncryptAndSerialize(string filename, MyObject obj, SymmetricAlgorithm key)
{
using(FileStream fs = File.Open(filename, FileMode.Create))
{
using(CryptoStream cs = new CryptoStream(fs, key.CreateEncryptor(), CryptoStreamMode.Write))
{
XmlSerializer xmlser = new XmlSerializer(typeof(MyObject));
xmlser.Serialize(cs, obj);
}
}
}
Decryption:
解密：
public static MyObject DecryptAndDeserialize(string filename, SymmetricAlgorithm key)
{
using(FileStream fs = File.Open(filename, FileMode.Open))
{
using(CryptoStream cs = new CryptoStream(fs, key.CreateDecryptor(), CryptoStreamMode.Read))
{
XmlSerializer xmlser = new XmlSerializer(typeof(MyObject));
return (MyObject) xmlser.Deserialize(cs);
}
}
}
Usage:
用法：
DESCryptoServiceProvider key = new DESCryptoServiceProvider();
MyObject obj = new MyObject();
EncryptAndSerialize("testfile.xml", obj, key);
MyObject deobj = DecryptAndDeserialize("testfile.xml", key);
You need to change MyObject to whatever the type of your object is that you are serializing, but this is the general idea. The trick is to use the same SymmetricAlgorithm instance to encrypt and decrypt.
您需要将 MyObject 更改为您正在序列化的任何对象类型，但这是总体思路。诀窍是使用相同的 SymmetricAlgorithm 实例来加密和解密。
回答by Max Galkin
Here is an exampleof DES encryption/decription for a string.
回答by Wade Hatler
This thread gave the basic idea. Here's a version that makes the functions generic, and also allows you to pass an encryption key so it's reversible.
这个线程给出了基本的想法。这是一个使函数通用的版本，并且还允许您传递加密密钥，因此它是可逆的。
public static void EncryptAndSerialize<T>(string filename, T obj, string encryptionKey) {
var key = new DESCryptoServiceProvider();
var e = key.CreateEncryptor(Encoding.ASCII.GetBytes("64bitPas"), Encoding.ASCII.GetBytes(encryptionKey));
using (var fs = File.Open(filename, FileMode.Create))
using (var cs = new CryptoStream(fs, e, CryptoStreamMode.Write))
(new XmlSerializer(typeof (T))).Serialize(cs, obj);
}
public static T DecryptAndDeserialize<T>(string filename, string encryptionKey) {
var key = new DESCryptoServiceProvider();
var d = key.CreateDecryptor(Encoding.ASCII.GetBytes("64bitPas"), Encoding.ASCII.GetBytes(encryptionKey));
using (var fs = File.Open(filename, FileMode.Open))
using (var cs = new CryptoStream(fs, d, CryptoStreamMode.Read))
return (T) (new XmlSerializer(typeof (T))).Deserialize(cs);
}
