编译器错误消息：CS0103：名称“ProtectedData”在当前上下文中不存在 [英] Compiler Error Message: CS0103: The name 'ProtectedData' does not exist in the current context

问题描述

我尝试使用System.Security的加密代码时遇到运行时错误。我添加了一个引用System.Security和一切看起来不错，但我得到这个错误：编译器错误消息：CS0103：名称'ProtectedData'不存在当前上下文

这里是抛出错误的代码。

  public static string EncryptString（SecureString input，string entropy）
 {
 byte [] salt = Encoding.Unicode.GetBytes（entropy）; 
 byte [] encryptedData = ProtectedData.Protect（
 Encoding.Unicode.GetBytes（ToInsecureString（input）），
 salt，
 DataProtectionScope.CurrentUser）; 
 return Convert.ToBase64String（encryptedData）; 
} 
  

感谢您，
Sam

<您需要为 System.Security.Cryptography 添加一个using语句，并且您需要一个对<$ div>

System.Security.dll 。

而不是using语句，你也可以像这样完全限定引用：

  byte [] encryptedData = System.Security.Cryptography.ProtectedData.Protect（
 Encoding.Unicode.GetBytes（ToInsecureString ，salt，
 System.Security.Cryptography.DataProtectionScope.CurrentUser）; 
  

I am getting a runtime error when trying to use System.Security's crypto code. I added a reference to System.Security and everything looks good but I am getting this error: "Compiler Error Message: CS0103: The name 'ProtectedData' does not exist in the current context"

here is the code that is throwing the error.

public static string EncryptString(SecureString input, string entropy)
    {
        byte[] salt = Encoding.Unicode.GetBytes(entropy);
        byte[] encryptedData = ProtectedData.Protect(
            Encoding.Unicode.GetBytes(ToInsecureString(input)),
            salt,
            DataProtectionScope.CurrentUser);
        return Convert.ToBase64String(encryptedData);
    }

Thanks, Sam

解决方案

You need to add a using statement for System.Security.Cryptography and you need a reference to System.Security.dll. From your question it appears you just added the reference and not the using statement.

Instead of the using statement you can also fully qualify the references like this:

byte[] encryptedData = System.Security.Cryptography.ProtectedData.Protect(
            Encoding.Unicode.GetBytes(ToInsecureString(input)), salt,
            System.Security.Cryptography.DataProtectionScope.CurrentUser);

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