ProtectedData使用字符串字典

Question

我將使用在這里找到的ProtectedData： https ： //msdn.microsoft.com/zh-cn/library/system.security.cryptography.protecteddata%28v=vs.110%29.aspx

我的問題是我無法理解如何使字典適應字節源，盡管它是從byte []字符串轉換而來的，但是當我去做Unprotect時，無法解密它。 我已經嘗試過了：

沒有DataProtection的代碼：

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"));
    }
}

我試試這個：

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;
}    

再次讀取該文件后，通過調用該文件，它不再能夠打開它...我該如何解決？

Answer 1

出於某種原因，您假定您的文件是文本文件，並且可以通過簡單調用ToString()來對字節數組進行序列化和反序列化。 事實並非如此。

使用讀寫字節數組的File方法。 因為那就是你所擁有的。