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MemoryProtectionScope Enumeration

Specifies the scope of memory protection to be applied by the Protect method.

Namespace:  System.Security.Cryptography
Assembly:  System.Security (in System.Security.dll)

public enum MemoryProtectionScope

Member nameDescription
SameProcessOnly code running in the same process as the code that called the Protect method can unprotect memory.
CrossProcessAll code in any process can unprotect memory that was protected using the Protect method.
SameLogonOnly code running in the same user context as the code that called the Protect method can unprotect memory.

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

The following code example shows how to use data protection.


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 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 );
	}

}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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