Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Security / Cryptography / CngProperty.cs / 1305376 / CngProperty.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== using System; using System.Collections.ObjectModel; using System.Diagnostics.Contracts; namespace System.Security.Cryptography { ////// Wrapper represeting an arbitrary property of a CNG key or provider /// [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public struct CngProperty : IEquatable{ private string m_name; private CngPropertyOptions m_propertyOptions; private byte[] m_value; private int? m_hashCode; public CngProperty(string name, byte[] value, CngPropertyOptions options) { if (name == null) throw new ArgumentNullException("name"); // @ m_name = name; m_propertyOptions = options; m_hashCode = null; if (value != null) { m_value = value.Clone() as byte[]; } else { m_value = null; } } /// /// Name of the property /// public string Name { get { Contract.Ensures(Contract.Result() != null); return m_name; } } /// /// Options used to set / get the property /// public CngPropertyOptions Options { get { return m_propertyOptions; } } ////// Direct value of the property -- if the value will be returned to user code or modified, use /// GetValue() instead. /// internal byte[] Value { get { return m_value; } } ////// Contents of the property /// ///public byte[] GetValue() { byte[] value = null; if (m_value != null) { value = m_value.Clone() as byte[]; } return value; } public static bool operator ==(CngProperty left, CngProperty right) { return left.Equals(right); } public static bool operator !=(CngProperty left, CngProperty right) { return !left.Equals(right); } public override bool Equals(object obj) { if (obj == null || !(obj is CngProperty)) { return false; } return Equals((CngProperty)obj); } public bool Equals(CngProperty other) { // // We will consider CNG properties equal only if the name, options and value are all also equal // if (!String.Equals(Name, other.Name, StringComparison.Ordinal)) { return false; } if (Options != other.Options) { return false; } if (m_value == null) { return other.m_value == null; } if (other.m_value == null) { return false; } if (m_value.Length != other.m_value.Length) { return false; } for (int i = 0; i < m_value.Length; i++) { if (m_value[i] != other.m_value[i]) { return false; } } return true; } public override int GetHashCode() { if (!m_hashCode.HasValue) { int hashCode = Name.GetHashCode() ^ Options.GetHashCode(); // The hash code for a byte is just the value of that byte. Since this will only modify the // lower bits of the hash code, we'll xor each byte into different sections of the hash code if (m_value != null) { for (int i = 0; i < m_value.Length; i++) { // Shift each byte forward by one byte, so that every 4 bytes has to potential to update // each of the calculated hash code's bytes. int shifted = (int)(m_value[i] << ((i % 4) * 8)); hashCode ^= shifted; } } m_hashCode = hashCode; } return m_hashCode.Value; } } /// /// Strongly typed collection of CNG properties /// [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class CngPropertyCollection : Collection{ } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== using System; using System.Collections.ObjectModel; using System.Diagnostics.Contracts; namespace System.Security.Cryptography { /// /// Wrapper represeting an arbitrary property of a CNG key or provider /// [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public struct CngProperty : IEquatable{ private string m_name; private CngPropertyOptions m_propertyOptions; private byte[] m_value; private int? m_hashCode; public CngProperty(string name, byte[] value, CngPropertyOptions options) { if (name == null) throw new ArgumentNullException("name"); // @ m_name = name; m_propertyOptions = options; m_hashCode = null; if (value != null) { m_value = value.Clone() as byte[]; } else { m_value = null; } } /// /// Name of the property /// public string Name { get { Contract.Ensures(Contract.Result() != null); return m_name; } } /// /// Options used to set / get the property /// public CngPropertyOptions Options { get { return m_propertyOptions; } } ////// Direct value of the property -- if the value will be returned to user code or modified, use /// GetValue() instead. /// internal byte[] Value { get { return m_value; } } ////// Contents of the property /// ///public byte[] GetValue() { byte[] value = null; if (m_value != null) { value = m_value.Clone() as byte[]; } return value; } public static bool operator ==(CngProperty left, CngProperty right) { return left.Equals(right); } public static bool operator !=(CngProperty left, CngProperty right) { return !left.Equals(right); } public override bool Equals(object obj) { if (obj == null || !(obj is CngProperty)) { return false; } return Equals((CngProperty)obj); } public bool Equals(CngProperty other) { // // We will consider CNG properties equal only if the name, options and value are all also equal // if (!String.Equals(Name, other.Name, StringComparison.Ordinal)) { return false; } if (Options != other.Options) { return false; } if (m_value == null) { return other.m_value == null; } if (other.m_value == null) { return false; } if (m_value.Length != other.m_value.Length) { return false; } for (int i = 0; i < m_value.Length; i++) { if (m_value[i] != other.m_value[i]) { return false; } } return true; } public override int GetHashCode() { if (!m_hashCode.HasValue) { int hashCode = Name.GetHashCode() ^ Options.GetHashCode(); // The hash code for a byte is just the value of that byte. Since this will only modify the // lower bits of the hash code, we'll xor each byte into different sections of the hash code if (m_value != null) { for (int i = 0; i < m_value.Length; i++) { // Shift each byte forward by one byte, so that every 4 bytes has to potential to update // each of the calculated hash code's bytes. int shifted = (int)(m_value[i] << ((i % 4) * 8)); hashCode ^= shifted; } } m_hashCode = hashCode; } return m_hashCode.Value; } } /// /// Strongly typed collection of CNG properties /// [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public sealed class CngPropertyCollection : Collection{ } } // 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
- MultipartIdentifier.cs
- FixedTextView.cs
- FileBasedResourceGroveler.cs
- XmlText.cs
- EditorOptionAttribute.cs
- ActiveDocumentEvent.cs
- DataAdapter.cs
- TaiwanLunisolarCalendar.cs
- WCFBuildProvider.cs
- SetterBase.cs
- GenerateHelper.cs
- Attachment.cs
- MarshalDirectiveException.cs
- SimpleMailWebEventProvider.cs
- AsyncInvokeContext.cs
- TreeWalker.cs
- HebrewCalendar.cs
- RadialGradientBrush.cs
- RawContentTypeMapper.cs
- XmlBinaryReaderSession.cs
- Expressions.cs
- XmlTextAttribute.cs
- WebPartEditorOkVerb.cs
- EntitySet.cs
- SerialStream.cs
- StringFunctions.cs
- ThicknessAnimationBase.cs
- EUCJPEncoding.cs
- ImageMapEventArgs.cs
- ObfuscationAttribute.cs
- WorkflowOperationBehavior.cs
- ScriptReference.cs
- XmlEntity.cs
- CompilationSection.cs
- FieldBuilder.cs
- EventLog.cs
- ModelVisual3D.cs
- dbdatarecord.cs
- HttpProcessUtility.cs
- WebReferenceOptions.cs
- ObjectDataSource.cs
- EdmItemCollection.cs
- ExtensionElement.cs
- QilInvokeLateBound.cs
- ReadOnlyCollectionBuilder.cs
- PathSegmentCollection.cs
- UnaryNode.cs
- EdmMember.cs
- HScrollProperties.cs
- DesignBindingEditor.cs
- AccessibilityApplicationManager.cs
- SafeHandle.cs
- RadioButtonPopupAdapter.cs
- WebRequestModulesSection.cs
- SourceFileInfo.cs
- ExpandedWrapper.cs
- CompositeActivityDesigner.cs
- XmlNullResolver.cs
- XmlWriterDelegator.cs
- DataRelation.cs
- ListViewCancelEventArgs.cs
- EntityDataSourceState.cs
- ConnectionPointCookie.cs
- PageClientProxyGenerator.cs
- CompositeDataBoundControl.cs
- TextPenaltyModule.cs
- SafeMILHandle.cs
- SparseMemoryStream.cs
- ReferenceSchema.cs
- TransformedBitmap.cs
- WindowsToolbarAsMenu.cs
- XPathMultyIterator.cs
- ErasingStroke.cs
- ComponentResourceManager.cs
- unsafenativemethodstextservices.cs
- SoapSchemaImporter.cs
- FtpRequestCacheValidator.cs
- DataPagerFieldCommandEventArgs.cs
- SystemKeyConverter.cs
- NameTable.cs
- RegistryExceptionHelper.cs
- Token.cs
- HtmlControlPersistable.cs
- PresentationSource.cs
- ElementHost.cs
- AnonymousIdentificationSection.cs
- XmlDataSourceDesigner.cs
- PipeConnection.cs
- UrlMappingCollection.cs
- DataColumn.cs
- MetaData.cs
- CodeLinePragma.cs
- ImageAttributes.cs
- SerializableTypeCodeDomSerializer.cs
- ToolStripGripRenderEventArgs.cs
- ProfilePropertyNameValidator.cs
- StrongNameUtility.cs
- documentation.cs
- TraceHandler.cs
- XmlSchemaExternal.cs