Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / 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
- TaskFileService.cs
- XPathAncestorQuery.cs
- FileDataSourceCache.cs
- StaticExtensionConverter.cs
- ConfigurationValidatorAttribute.cs
- XmlQualifiedName.cs
- LifetimeServices.cs
- LambdaCompiler.Unary.cs
- CompilerResults.cs
- TemplateBamlRecordReader.cs
- LinearQuaternionKeyFrame.cs
- DeclarativeCatalogPart.cs
- SqlUDTStorage.cs
- OdbcDataAdapter.cs
- ContextMenu.cs
- DataGridColumnCollection.cs
- OleDbReferenceCollection.cs
- ReflectionPermission.cs
- RecordManager.cs
- XdrBuilder.cs
- PopOutPanel.cs
- MethodExpression.cs
- DataGridItemAttachedStorage.cs
- ConfigurationErrorsException.cs
- ToolStripComboBox.cs
- WorkflowViewService.cs
- UInt16.cs
- DataGridDesigner.cs
- XmlElement.cs
- ParameterCollection.cs
- XmlElementCollection.cs
- DoubleCollectionConverter.cs
- TrackBar.cs
- ServiceModelPerformanceCounters.cs
- ClipboardData.cs
- SiteMapHierarchicalDataSourceView.cs
- X509ChainElement.cs
- DebugController.cs
- ControlPropertyNameConverter.cs
- RepeaterItemCollection.cs
- CodeMethodReturnStatement.cs
- PageWrapper.cs
- _TransmitFileOverlappedAsyncResult.cs
- DataGridViewCellFormattingEventArgs.cs
- EdmTypeAttribute.cs
- CapabilitiesAssignment.cs
- EntityDataSourceViewSchema.cs
- UrlAuthorizationModule.cs
- ConvertTextFrag.cs
- BaseCodePageEncoding.cs
- LedgerEntryCollection.cs
- diagnosticsswitches.cs
- DynamicMetaObjectBinder.cs
- WebPartConnectionsEventArgs.cs
- ImmComposition.cs
- PageCodeDomTreeGenerator.cs
- CodeFieldReferenceExpression.cs
- UnsafeNativeMethodsCLR.cs
- TreeView.cs
- XmlTypeMapping.cs
- XmlWhitespace.cs
- XPathBuilder.cs
- DoubleAnimation.cs
- SupportingTokenListenerFactory.cs
- DuplexChannel.cs
- BoundPropertyEntry.cs
- CachedRequestParams.cs
- Byte.cs
- HostingEnvironmentWrapper.cs
- IOThreadScheduler.cs
- Debugger.cs
- MatrixStack.cs
- ProcessHostServerConfig.cs
- GZipStream.cs
- HyperlinkAutomationPeer.cs
- RotateTransform3D.cs
- TextTabProperties.cs
- Pkcs7Recipient.cs
- ClientBuildManagerCallback.cs
- InvalidWMPVersionException.cs
- PatternMatcher.cs
- MetadataPropertyCollection.cs
- FunctionDescription.cs
- Propagator.Evaluator.cs
- ImageDrawing.cs
- UpdatableWrapper.cs
- AncillaryOps.cs
- DocumentViewerAutomationPeer.cs
- WebConfigurationHost.cs
- Unit.cs
- MDIControlStrip.cs
- Range.cs
- unsafeIndexingFilterStream.cs
- X509LogoTypeExtension.cs
- X509Chain.cs
- NativeRightsManagementAPIsStructures.cs
- IResourceProvider.cs
- TextRange.cs
- XmlFileEditor.cs
- SByte.cs