ProtectedMemory 类

定义

提供保护内存和取消内存保护的方法。 此类不能被继承。

public ref class ProtectedMemory sealed
public ref class ProtectedMemory abstract sealed
public sealed class ProtectedMemory
public static class ProtectedMemory
type ProtectedMemory = class
Public NotInheritable Class ProtectedMemory
Public Class ProtectedMemory
继承
ProtectedMemory

示例

以下示例演示如何使用数据保护。

#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;

int main()
{
   
   // Create the original data to be encrypted (The data length should be a multiple of 16).
   array<Byte>^secret = {1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4};
   
   // Encrypt the data in memory. The result is stored in the same array as the original data.
   ProtectedMemory::Protect( secret, MemoryProtectionScope::SameLogon );
   
   // Decrypt the data in memory and store in the original array.
   ProtectedMemory::Unprotect( secret, MemoryProtectionScope::SameLogon );
}
using System;
using System.Security.Cryptography;

public class MemoryProtectionSample
{

    public static void Main()
    {
        // Create the original data to be encrypted (The data length should be a multiple of 16).
        byte [] secret = { 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4 };

        // Encrypt the data in memory. The result is stored in the same array as the original data.
        ProtectedMemory.Protect( secret, MemoryProtectionScope.SameLogon );

        // Decrypt the data in memory and store in the original array.
        ProtectedMemory.Unprotect( secret, MemoryProtectionScope.SameLogon );
    }
}
Imports System.Security.Cryptography

Public Class MemoryProtectionSample

    Public Shared Sub Main()
        ' Create the original data to be encrypted (The data length should be a multiple of 16).
        Dim secret As Byte() = {1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4}

        ' Encrypt the data in memory. The result is stored in the same array as the original data.
        ProtectedMemory.Protect(secret, MemoryProtectionScope.SameLogon)

        ' Decrypt the data in memory and store in the original array.
        ProtectedMemory.Unprotect(secret, MemoryProtectionScope.SameLogon)

    End Sub
End Class

注解

此类提供对 Windows XP 及更高版本操作系统中提供的数据保护 API (DPAPI) 的访问权限。 这是操作系统提供的一项服务,不需要其他库。 它为内存中的敏感数据提供加密。

类由非托管 DPAPI ProtectUnprotect的两个包装器组成。 这两种方法可用于加密和解密内存中的数据。

方法

Protect(Byte[], MemoryProtectionScope)

保护指定数据。

Unprotect(Byte[], MemoryProtectionScope)

取消对使用 Protect(Byte[], MemoryProtectionScope) 方法保护的内存中的数据的保护。

适用于