MemoryProtectionScope Enum

Reference

Definition

Namespace:: System.Security.Cryptography

Assembly:: System.Security.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Specifies the scope of memory protection to be applied by the Protect(Byte[], MemoryProtectionScope) method.

public enum class MemoryProtectionScope

public enum MemoryProtectionScope

type MemoryProtectionScope =

Public Enum MemoryProtectionScope

Inheritance: Object

ValueType

Enum
MemoryProtectionScope

Fields

Name	Value	Description
SameProcess	0	Only code running in the same process as the code that called the Protect(Byte[], MemoryProtectionScope) method can unprotect memory.
CrossProcess	1	All code in any process can unprotect memory that was protected using the Protect(Byte[], MemoryProtectionScope) method.
SameLogon	2	Only code running in the same user context as the code that called the Protect(Byte[], MemoryProtectionScope) method can unprotect memory.

Examples

The following code example shows how to use data protection.

#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

Remarks

This enumeration is used with the Protect and Unprotect methods to protect data in memory.

Applies to

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