c# - 使用 BinaryFormatter 对加密数据进行反序列化问题

Question

这是我的代码：

    public static void Save<T>(T toSerialize, string fileSpec) {
        BinaryFormatter formatter = new BinaryFormatter();
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();

        using (FileStream stream = File.Create(fileSpec)) {
            using (CryptoStream cryptoStream = new CryptoStream(stream, des.CreateEncryptor(key, iv), CryptoStreamMode.Write)) {
                formatter.Serialize(cryptoStream, toSerialize);
                cryptoStream.FlushFinalBlock();
            }
        }
    }

    public static T Load<T>(string fileSpec) {
        BinaryFormatter formatter = new BinaryFormatter();
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();

        using (FileStream stream = File.OpenRead(fileSpec)) {
            using (CryptoStream cryptoStream = new CryptoStream(stream, des.CreateEncryptor(key, iv), CryptoStreamMode.Read)) {
                return (T)formatter.Deserialize(cryptoStream);
            }
        }
    }

Key 和 iv 都是长度为 8 的静态字节数组，我将其用于测试目的。出现错误如下：

二进制流“178”不包含有效的 BinaryHeader。可能的原因是无效的流或序列化和反序列化之间的对象版本更改

任何帮助深表感谢！

Answer 1

一个小错字：你的Load方法应该使用des.CreateDecryptor，像这样：

public static T Load<T>(string fileSpec)
{
    BinaryFormatter formatter = new BinaryFormatter();
    DESCryptoServiceProvider des = new DESCryptoServiceProvider();

    using (FileStream stream = File.OpenRead(fileSpec))
    {
        using (CryptoStream cryptoStream = 
               new CryptoStream(stream, des.CreateDecryptor(key, iv),
                                CryptoStreamMode.Read))
        {
            return (T)formatter.Deserialize(cryptoStream);
        }
    }
}