Question

我会使用我在这里找到的ProtectedData： https://msdn.microsoft.com/en-us/library/system.security.cryptography.protecteddata%28v=vs.110%29.aspx

我的问题是我无法理解如何将字典调整为字节源，尽管它从byte []字符串转换，当我去做Unprotect时，无法解密它。我试过了：

没有DataProtection的代码：

public static void SetLoginUserDataForFile(ConnectionData data)
{
    Dictionary<string, Dictionary<string, string>> retVal = new Dictionary<string, Dictionary<string, string>>();
    Dictionary<string, string> dataValues = new Dictionary<string, string>();

    if (File.Exists(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PROGRAMFILE", "PROGRAMFILE")))
    {
        string fileData = File.ReadAllText(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PROGRAMFILE", "PROGRAMFILE"));
        try
        {
            retVal = JsonConvert.DeserializeObject<Dictionary<string, Dictionary<string, string>>>(Decrypt(fileData, "pa$$w0rd"));
        }
        catch (Exception ex)
        {
            retVal = new Dictionary<string, Dictionary<string, string>>();
        }

        dataValues.Add("HashedPwd", data.HashedPwd);
        dataValues.Add("CanAccessOffline", data.LoggedUser.CanAccessOffline.ToString());
        dataValues.Add("CanSavePassword", data.LoggedUser.CanSavePassword.ToString());

        if (retVal.ContainsKey(data.LoggedUser.UserName))
            retVal[data.LoggedUser.UserName] = dataValues;
        else
            retVal.Add(data.LoggedUser.UserName, dataValues);

        File.WriteAllText(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PROGRAMFILE", "PROGRAMFILE"), Encrypt(JsonConvert.SerializeObject(retVal), "pa$$w0rd"));
    }
}

我试试这个：

public static void SetLoginUserDataForFile(ConnectionData data)
{
    Assembly assembly = Assembly.GetExecutingAssembly();
    String GuidID = assembly.GetType().GUID.ToString();

    Dictionary<string, Dictionary<string, string>> retVal = new Dictionary<string, Dictionary<string, string>>();
    Dictionary<string, string> dataValues = new Dictionary<string, string>();

    if (File.Exists(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PROGRAMFILE", "PROGRAMFILE")))
    {
        string fileData = File.ReadAllText(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PROGRAMFILE", "PROGRAMFILE"));
        try
        {
            retVal = JsonConvert.DeserializeObject<Dictionary<string, Dictionary<string, string>>>(Decrypt(fileData, DataProtection.Unprotect(GetBytes(GuidID)).ToString()));
        }
        catch (Exception ex)
        {
            retVal = new Dictionary<string, Dictionary<string, string>>();
        }

        dataValues.Add("HashedPwd", data.HashedPwd);
        dataValues.Add("CanAccessOffline", data.LoggedUser.CanAccessOffline.ToString());
        dataValues.Add("CanSavePassword", data.LoggedUser.CanSavePassword.ToString());

        if (retVal.ContainsKey(data.LoggedUser.UserName))
            retVal[data.LoggedUser.UserName] = dataValues;
        else
            retVal.Add(data.LoggedUser.UserName, dataValues);

        File.WriteAllText(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PROGRAMFILE", "PROGRAMFILE"), Encrypt(JsonConvert.SerializeObject(retVal), DataProtection.Protect(GetBytes(GuidID)).ToString()));
    }
}

public static byte[] GetBytes(string str)
{
    byte[] bytes = new byte[str.Length * sizeof(char)];
    System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
    return bytes;
}

一旦我再次阅读，通过调用该文件，再也无法打开它...我该如何解决？

Answer 1

出于某种原因，您假设您的文件是文本文件，并且可以通过简单调用ToString()来序列化和反序列化字节数组。事实并非如此。

使用读取和写入字节数组的File方法。因为这就是你拥有的。

ProtectedData使用字符串字典

1 个答案: