43 lines
1.5 KiB
C#
43 lines
1.5 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Runtime.InteropServices;
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using Microsoft.AspNetCore.Cryptography;
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namespace Microsoft.AspNetCore.DataProtection
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{
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/// <summary>
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/// Wrappers around CryptProtectMemory / CryptUnprotectMemory.
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/// </summary>
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internal unsafe static class MemoryProtection
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{
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// from dpapi.h
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private const uint CRYPTPROTECTMEMORY_SAME_PROCESS = 0x00;
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public static void CryptProtectMemory(SafeHandle pBuffer, uint byteCount)
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{
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if (!UnsafeNativeMethods.CryptProtectMemory(pBuffer, byteCount, CRYPTPROTECTMEMORY_SAME_PROCESS))
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{
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UnsafeNativeMethods.ThrowExceptionForLastCrypt32Error();
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}
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}
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public static void CryptUnprotectMemory(byte* pBuffer, uint byteCount)
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{
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if (!UnsafeNativeMethods.CryptUnprotectMemory(pBuffer, byteCount, CRYPTPROTECTMEMORY_SAME_PROCESS))
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{
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UnsafeNativeMethods.ThrowExceptionForLastCrypt32Error();
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}
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}
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public static void CryptUnprotectMemory(SafeHandle pBuffer, uint byteCount)
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{
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if (!UnsafeNativeMethods.CryptUnprotectMemory(pBuffer, byteCount, CRYPTPROTECTMEMORY_SAME_PROCESS))
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{
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UnsafeNativeMethods.ThrowExceptionForLastCrypt32Error();
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}
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}
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}
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}
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