Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / ManagedLibraries / Security / System / Security / Cryptography / DataProtection.cs / 1 / DataProtection.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // DataProtection.cs // // 01/25/2003 // namespace System.Security.Cryptography { using Microsoft.Win32; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using System.Runtime.ConstrainedExecution; using System.Security.Permissions; using System.Globalization; public enum DataProtectionScope { CurrentUser = 0x00, LocalMachine = 0x01 } public enum MemoryProtectionScope { SameProcess = 0x00, CrossProcess = 0x01, SameLogon = 0x02 } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class ProtectedData { private ProtectedData () {} public static byte[] Protect (byte[] userData, byte[] optionalEntropy, DataProtectionScope scope) { if (userData == null) throw new ArgumentNullException("userData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); GCHandle pbDataIn = new GCHandle(); GCHandle pOptionalEntropy = new GCHandle(); CAPI.CRYPTOAPI_BLOB blob = new CAPI.CRYPTOAPI_BLOB(); RuntimeHelpers.PrepareConstrainedRegions(); try { pbDataIn = GCHandle.Alloc(userData, GCHandleType.Pinned); CAPI.CRYPTOAPI_BLOB dataIn = new CAPI.CRYPTOAPI_BLOB(); dataIn.cbData = (uint) userData.Length; dataIn.pbData = pbDataIn.AddrOfPinnedObject(); CAPI.CRYPTOAPI_BLOB entropy = new CAPI.CRYPTOAPI_BLOB(); if (optionalEntropy != null) { pOptionalEntropy = GCHandle.Alloc(optionalEntropy, GCHandleType.Pinned); entropy.cbData = (uint) optionalEntropy.Length; entropy.pbData = pOptionalEntropy.AddrOfPinnedObject(); } uint dwFlags = CAPI.CRYPTPROTECT_UI_FORBIDDEN; if (scope == DataProtectionScope.LocalMachine) dwFlags |= CAPI.CRYPTPROTECT_LOCAL_MACHINE; unsafe { if (!CAPI.CryptProtectData(new IntPtr(&dataIn), String.Empty, new IntPtr(&entropy), IntPtr.Zero, IntPtr.Zero, dwFlags, new IntPtr(&blob))) throw new CryptographicException(Marshal.GetLastWin32Error()); } // In some cases, the API would fail due to OOM but simply return a null pointer. if (blob.pbData == IntPtr.Zero) throw new OutOfMemoryException(); byte[] encryptedData = new byte[(int) blob.cbData]; Marshal.Copy(blob.pbData, encryptedData, 0, encryptedData.Length); return encryptedData; } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } finally { if (pbDataIn.IsAllocated) pbDataIn.Free(); if (pOptionalEntropy.IsAllocated) pOptionalEntropy.Free(); if (blob.pbData != IntPtr.Zero) { CAPI.ZeroMemory(blob.pbData, blob.cbData); CAPI.LocalFree(blob.pbData); } } } public static byte[] Unprotect (byte[] encryptedData, byte[] optionalEntropy, DataProtectionScope scope) { if (encryptedData == null) throw new ArgumentNullException("encryptedData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); GCHandle pbDataIn = new GCHandle(); GCHandle pOptionalEntropy = new GCHandle(); CAPI.CRYPTOAPI_BLOB userData = new CAPI.CRYPTOAPI_BLOB(); RuntimeHelpers.PrepareConstrainedRegions(); try { pbDataIn = GCHandle.Alloc(encryptedData, GCHandleType.Pinned); CAPI.CRYPTOAPI_BLOB dataIn = new CAPI.CRYPTOAPI_BLOB(); dataIn.cbData = (uint) encryptedData.Length; dataIn.pbData = pbDataIn.AddrOfPinnedObject(); CAPI.CRYPTOAPI_BLOB entropy = new CAPI.CRYPTOAPI_BLOB(); if (optionalEntropy != null) { pOptionalEntropy = GCHandle.Alloc(optionalEntropy, GCHandleType.Pinned); entropy.cbData = (uint) optionalEntropy.Length; entropy.pbData = pOptionalEntropy.AddrOfPinnedObject(); } uint dwFlags = CAPI.CRYPTPROTECT_UI_FORBIDDEN; if (scope == DataProtectionScope.LocalMachine) dwFlags |= CAPI.CRYPTPROTECT_LOCAL_MACHINE; unsafe { if (!CAPI.CryptUnprotectData(new IntPtr(&dataIn), IntPtr.Zero, new IntPtr(&entropy), IntPtr.Zero, IntPtr.Zero, dwFlags, new IntPtr(&userData))) throw new CryptographicException(Marshal.GetLastWin32Error()); } // In some cases, the API would fail due to OOM but simply return a null pointer. if (userData.pbData == IntPtr.Zero) throw new OutOfMemoryException(); byte[] data = new byte[(int) userData.cbData]; Marshal.Copy(userData.pbData, data, 0, data.Length); return data; } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } finally { if (pbDataIn.IsAllocated) pbDataIn.Free(); if (pOptionalEntropy.IsAllocated) pOptionalEntropy.Free(); if (userData.pbData != IntPtr.Zero) { CAPI.ZeroMemory(userData.pbData, userData.cbData); CAPI.LocalFree(userData.pbData); } } } } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class ProtectedMemory { private ProtectedMemory () {} public static void Protect (byte[] userData, MemoryProtectionScope scope) { if (userData == null) throw new ArgumentNullException("userData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); VerifyScope(scope); // The RtlEncryptMemory and RtlDecryptMemory functions are available on WinXP and publicly published // in the ntsecapi.h header file as of Windows Server 2003. // The Rtl functions accept data in 8 byte increments, but we don't want applications to be able to make use of this, // or else they're liable to break when the user upgrades. if ((userData.Length == 0) || (userData.Length % CAPI.CRYPTPROTECTMEMORY_BLOCK_SIZE != 0)) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_DpApi_InvalidMemoryLength")); uint dwFlags = (uint) scope; try { // RtlEncryptMemory return an NTSTATUS int status = CAPI.SystemFunction040(userData, (uint) userData.Length, dwFlags); if (status < 0) // non-negative numbers indicate success throw new CryptographicException(CAPI.LsaNtStatusToWinError(status)); } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } } public static void Unprotect (byte[] encryptedData, MemoryProtectionScope scope) { if (encryptedData == null) throw new ArgumentNullException("encryptedData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); VerifyScope(scope); // The RtlEncryptMemory and RtlDecryptMemory functions are available on WinXP and publicly published // in the ntsecapi.h header file as of Windows Server 2003. // The Rtl functions accept data in 8 byte increments, but we don't want applications to be able to make use of this, // or else they're liable to break when the user upgrades. if ((encryptedData.Length == 0) || (encryptedData.Length % CAPI.CRYPTPROTECTMEMORY_BLOCK_SIZE != 0)) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_DpApi_InvalidMemoryLength")); uint dwFlags = (uint) scope; try { // RtlDecryptMemory return an NTSTATUS int status = CAPI.SystemFunction041(encryptedData, (uint) encryptedData.Length, dwFlags); if (status < 0) // non-negative numbers indicate success throw new CryptographicException(CAPI.LsaNtStatusToWinError(status)); } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } } private static void VerifyScope (MemoryProtectionScope scope) { if ((scope != MemoryProtectionScope.SameProcess) && (scope != MemoryProtectionScope.CrossProcess) && (scope != MemoryProtectionScope.SameLogon)) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, SecurityResources.GetResourceString("Arg_EnumIllegalVal"), (int) scope)); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // DataProtection.cs // // 01/25/2003 // namespace System.Security.Cryptography { using Microsoft.Win32; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using System.Runtime.ConstrainedExecution; using System.Security.Permissions; using System.Globalization; public enum DataProtectionScope { CurrentUser = 0x00, LocalMachine = 0x01 } public enum MemoryProtectionScope { SameProcess = 0x00, CrossProcess = 0x01, SameLogon = 0x02 } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class ProtectedData { private ProtectedData () {} public static byte[] Protect (byte[] userData, byte[] optionalEntropy, DataProtectionScope scope) { if (userData == null) throw new ArgumentNullException("userData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); GCHandle pbDataIn = new GCHandle(); GCHandle pOptionalEntropy = new GCHandle(); CAPI.CRYPTOAPI_BLOB blob = new CAPI.CRYPTOAPI_BLOB(); RuntimeHelpers.PrepareConstrainedRegions(); try { pbDataIn = GCHandle.Alloc(userData, GCHandleType.Pinned); CAPI.CRYPTOAPI_BLOB dataIn = new CAPI.CRYPTOAPI_BLOB(); dataIn.cbData = (uint) userData.Length; dataIn.pbData = pbDataIn.AddrOfPinnedObject(); CAPI.CRYPTOAPI_BLOB entropy = new CAPI.CRYPTOAPI_BLOB(); if (optionalEntropy != null) { pOptionalEntropy = GCHandle.Alloc(optionalEntropy, GCHandleType.Pinned); entropy.cbData = (uint) optionalEntropy.Length; entropy.pbData = pOptionalEntropy.AddrOfPinnedObject(); } uint dwFlags = CAPI.CRYPTPROTECT_UI_FORBIDDEN; if (scope == DataProtectionScope.LocalMachine) dwFlags |= CAPI.CRYPTPROTECT_LOCAL_MACHINE; unsafe { if (!CAPI.CryptProtectData(new IntPtr(&dataIn), String.Empty, new IntPtr(&entropy), IntPtr.Zero, IntPtr.Zero, dwFlags, new IntPtr(&blob))) throw new CryptographicException(Marshal.GetLastWin32Error()); } // In some cases, the API would fail due to OOM but simply return a null pointer. if (blob.pbData == IntPtr.Zero) throw new OutOfMemoryException(); byte[] encryptedData = new byte[(int) blob.cbData]; Marshal.Copy(blob.pbData, encryptedData, 0, encryptedData.Length); return encryptedData; } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } finally { if (pbDataIn.IsAllocated) pbDataIn.Free(); if (pOptionalEntropy.IsAllocated) pOptionalEntropy.Free(); if (blob.pbData != IntPtr.Zero) { CAPI.ZeroMemory(blob.pbData, blob.cbData); CAPI.LocalFree(blob.pbData); } } } public static byte[] Unprotect (byte[] encryptedData, byte[] optionalEntropy, DataProtectionScope scope) { if (encryptedData == null) throw new ArgumentNullException("encryptedData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); GCHandle pbDataIn = new GCHandle(); GCHandle pOptionalEntropy = new GCHandle(); CAPI.CRYPTOAPI_BLOB userData = new CAPI.CRYPTOAPI_BLOB(); RuntimeHelpers.PrepareConstrainedRegions(); try { pbDataIn = GCHandle.Alloc(encryptedData, GCHandleType.Pinned); CAPI.CRYPTOAPI_BLOB dataIn = new CAPI.CRYPTOAPI_BLOB(); dataIn.cbData = (uint) encryptedData.Length; dataIn.pbData = pbDataIn.AddrOfPinnedObject(); CAPI.CRYPTOAPI_BLOB entropy = new CAPI.CRYPTOAPI_BLOB(); if (optionalEntropy != null) { pOptionalEntropy = GCHandle.Alloc(optionalEntropy, GCHandleType.Pinned); entropy.cbData = (uint) optionalEntropy.Length; entropy.pbData = pOptionalEntropy.AddrOfPinnedObject(); } uint dwFlags = CAPI.CRYPTPROTECT_UI_FORBIDDEN; if (scope == DataProtectionScope.LocalMachine) dwFlags |= CAPI.CRYPTPROTECT_LOCAL_MACHINE; unsafe { if (!CAPI.CryptUnprotectData(new IntPtr(&dataIn), IntPtr.Zero, new IntPtr(&entropy), IntPtr.Zero, IntPtr.Zero, dwFlags, new IntPtr(&userData))) throw new CryptographicException(Marshal.GetLastWin32Error()); } // In some cases, the API would fail due to OOM but simply return a null pointer. if (userData.pbData == IntPtr.Zero) throw new OutOfMemoryException(); byte[] data = new byte[(int) userData.cbData]; Marshal.Copy(userData.pbData, data, 0, data.Length); return data; } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } finally { if (pbDataIn.IsAllocated) pbDataIn.Free(); if (pOptionalEntropy.IsAllocated) pOptionalEntropy.Free(); if (userData.pbData != IntPtr.Zero) { CAPI.ZeroMemory(userData.pbData, userData.cbData); CAPI.LocalFree(userData.pbData); } } } } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class ProtectedMemory { private ProtectedMemory () {} public static void Protect (byte[] userData, MemoryProtectionScope scope) { if (userData == null) throw new ArgumentNullException("userData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); VerifyScope(scope); // The RtlEncryptMemory and RtlDecryptMemory functions are available on WinXP and publicly published // in the ntsecapi.h header file as of Windows Server 2003. // The Rtl functions accept data in 8 byte increments, but we don't want applications to be able to make use of this, // or else they're liable to break when the user upgrades. if ((userData.Length == 0) || (userData.Length % CAPI.CRYPTPROTECTMEMORY_BLOCK_SIZE != 0)) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_DpApi_InvalidMemoryLength")); uint dwFlags = (uint) scope; try { // RtlEncryptMemory return an NTSTATUS int status = CAPI.SystemFunction040(userData, (uint) userData.Length, dwFlags); if (status < 0) // non-negative numbers indicate success throw new CryptographicException(CAPI.LsaNtStatusToWinError(status)); } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } } public static void Unprotect (byte[] encryptedData, MemoryProtectionScope scope) { if (encryptedData == null) throw new ArgumentNullException("encryptedData"); if (Environment.OSVersion.Platform == PlatformID.Win32Windows) throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); VerifyScope(scope); // The RtlEncryptMemory and RtlDecryptMemory functions are available on WinXP and publicly published // in the ntsecapi.h header file as of Windows Server 2003. // The Rtl functions accept data in 8 byte increments, but we don't want applications to be able to make use of this, // or else they're liable to break when the user upgrades. if ((encryptedData.Length == 0) || (encryptedData.Length % CAPI.CRYPTPROTECTMEMORY_BLOCK_SIZE != 0)) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_DpApi_InvalidMemoryLength")); uint dwFlags = (uint) scope; try { // RtlDecryptMemory return an NTSTATUS int status = CAPI.SystemFunction041(encryptedData, (uint) encryptedData.Length, dwFlags); if (status < 0) // non-negative numbers indicate success throw new CryptographicException(CAPI.LsaNtStatusToWinError(status)); } catch (EntryPointNotFoundException) { throw new NotSupportedException(SecurityResources.GetResourceString("NotSupported_PlatformRequiresNT")); } } private static void VerifyScope (MemoryProtectionScope scope) { if ((scope != MemoryProtectionScope.SameProcess) && (scope != MemoryProtectionScope.CrossProcess) && (scope != MemoryProtectionScope.SameLogon)) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, SecurityResources.GetResourceString("Arg_EnumIllegalVal"), (int) scope)); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DataGridCell.cs
- PropertyPushdownHelper.cs
- CodeCompileUnit.cs
- validationstate.cs
- __Filters.cs
- IPGlobalProperties.cs
- ServiceHostFactory.cs
- Color.cs
- precedingsibling.cs
- FontWeight.cs
- MaterialGroup.cs
- StylusButton.cs
- DBParameter.cs
- ELinqQueryState.cs
- ObjectListCommandCollection.cs
- Transform.cs
- WaitForChangedResult.cs
- XamlDebuggerXmlReader.cs
- RegexRunnerFactory.cs
- XmlElementAttribute.cs
- PersonalizableAttribute.cs
- DrawingContext.cs
- RangeBase.cs
- LoadRetryConstantStrategy.cs
- CodeDelegateInvokeExpression.cs
- ContextDataSourceView.cs
- CompareInfo.cs
- SerializerWriterEventHandlers.cs
- WCFBuildProvider.cs
- ResourceDisplayNameAttribute.cs
- connectionpool.cs
- AuthenticationSection.cs
- HostingPreferredMapPath.cs
- ToolStripPanelRenderEventArgs.cs
- EventTask.cs
- SoapElementAttribute.cs
- TypedAsyncResult.cs
- DesignSurfaceCollection.cs
- WebBrowserDesigner.cs
- DataGridLength.cs
- RecognizerBase.cs
- StringWriter.cs
- ObjectDataSourceChooseMethodsPanel.cs
- ContainerSelectorBehavior.cs
- DataGridViewCheckBoxColumn.cs
- XmlException.cs
- SecurityPermission.cs
- Cell.cs
- TemplateNameScope.cs
- OperationAbortedException.cs
- FixedDocument.cs
- StylusCaptureWithinProperty.cs
- Translator.cs
- MsmqChannelFactory.cs
- Win32.cs
- SqlMetaData.cs
- NameValuePair.cs
- ServiceBusyException.cs
- WrappedDispatcherException.cs
- FloaterBaseParaClient.cs
- Stack.cs
- ComponentResourceKey.cs
- ObjectParameterCollection.cs
- SoapExtension.cs
- StackBuilderSink.cs
- SwitchDesigner.xaml.cs
- IndexingContentUnit.cs
- assemblycache.cs
- ComPlusTypeValidator.cs
- DefaultValueConverter.cs
- Iis7Helper.cs
- DeploymentSection.cs
- MailDefinitionBodyFileNameEditor.cs
- WebResponse.cs
- XmlUTF8TextReader.cs
- DbDataSourceEnumerator.cs
- DoubleLink.cs
- DbMetaDataFactory.cs
- BitmapEffectInputConnector.cs
- ResourceDisplayNameAttribute.cs
- Byte.cs
- Condition.cs
- Trustee.cs
- DataGridViewCheckBoxColumn.cs
- XmlWrappingWriter.cs
- DataAccessor.cs
- ConfigurationProperty.cs
- ProgressBarRenderer.cs
- ThaiBuddhistCalendar.cs
- Button.cs
- XamlFilter.cs
- HttpInputStream.cs
- ImportCatalogPart.cs
- SchemaManager.cs
- ButtonRenderer.cs
- ResourceDefaultValueAttribute.cs
- ModifiableIteratorCollection.cs
- TextAnchor.cs
- CryptoHelper.cs
- Validator.cs