Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / infocard / Client / System / IdentityModel / Selectors / InfoCardAsymmetricCrypto.cs / 1305376 / InfoCardAsymmetricCrypto.cs
//------------------------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------------------------- namespace System.IdentityModel.Selectors { using System; using System.Security.Cryptography; using System.Security.Cryptography.Xml; using System.IdentityModel.Tokens; using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace; // // For common & resources // using Microsoft.InfoCards; // // Summary: // This class implements the IAsymmetricCrypto interface and is used as an adapter between the // InfoCard system and Indigo. // internal class InfoCardAsymmetricCrypto : AsymmetricSecurityKey, IDisposable { InfoCardRSACryptoProvider m_rsa; // // Summary: // Constructs a new InfoCardAsymmetricCrypto given an InfoCardRSACryptoProvider. // // Parameters: // cryptoHandle - the handle to the asymmetric key to base this crypto object on. public InfoCardAsymmetricCrypto( AsymmetricCryptoHandle cryptoHandle ) { m_rsa = new InfoCardRSACryptoProvider( cryptoHandle ); } // // Summary: // Returns the size of the asymmetric key // public override int KeySize { get { return m_rsa.KeySize; } } // // Summary: // Indicates whether this IAsymmetricCrypto has access to the private key. // In our case, that's the whole point, so it always returns true. // public override bool HasPrivateKey() { return true; } // // Summary: // Returns a reference to the InfoCardRSACryptoProvider that give Indigo access to // the private key associated with the infocard, recipient tuple. // // Parameters: // algorithmUri - The URI of the algorithm being requested. // privateKey - set to true if access to the private key is required. // public override AsymmetricAlgorithm GetAsymmetricAlgorithm( string algorithmUri, bool privateKey ) { switch( algorithmUri ) { case SignedXml.XmlDsigRSASHA1Url: case EncryptedXml.XmlEncRSA15Url: case EncryptedXml.XmlEncRSAOAEPUrl: return m_rsa; default: throw IDT.ThrowHelperError( new NotSupportedException( SR.GetString( SR.ClientUnsupportedCryptoAlgorithm, algorithmUri ) ) ); } } // // Sumamry: // Returns a HashAlgorithm // // Parameters: // algorithmUri - the uri of the hash algorithm being requested. // public override HashAlgorithm GetHashAlgorithmForSignature( string algorithmUri ) { switch (algorithmUri) { case SignedXml.XmlDsigRSASHA1Url: return new SHA1Managed(); default: throw IDT.ThrowHelperError( new NotSupportedException( SR.GetString( SR.ClientUnsupportedCryptoAlgorithm, algorithmUri ) ) ); } } // // Summary: // Returns a Signature deformatter. // // Parameters: // algorithmUri - the uri of signature deformatter being requeted. // public override AsymmetricSignatureDeformatter GetSignatureDeformatter( string algorithmUri ) { switch( algorithmUri) { case SignedXml.XmlDsigRSASHA1Url: return new InfoCardRSAPKCS1SignatureDeformatter( m_rsa ); default: throw IDT.ThrowHelperError( new NotSupportedException( SR.GetString( SR.ClientUnsupportedCryptoAlgorithm, algorithmUri ) ) ); } } // // Summary: // Returns a Signature formatter. // // Parameters: // algorithmUri - the uri of signature formatter being requeted. // public override AsymmetricSignatureFormatter GetSignatureFormatter( string algorithmUri ) { switch( algorithmUri) { case SignedXml.XmlDsigRSASHA1Url: return new InfoCardRSAPKCS1SignatureFormatter( m_rsa ); default: throw IDT.ThrowHelperError( new NotSupportedException( SR.GetString( SR.ClientUnsupportedCryptoAlgorithm, algorithmUri ) ) ); } } // // Summary: // Decrypts a symmetric key using the private key of a public/private key pair. // // Parameters: // algorithmUri - The algorithm to use to decrypt the key. // keyData - the key to decrypt. // public override byte[] DecryptKey( string algorithmUri, byte[] keyData ) { AsymmetricKeyExchangeDeformatter deformatter; switch (algorithmUri) { case EncryptedXml.XmlEncRSA15Url: deformatter = new InfoCardRSAPKCS1KeyExchangeDeformatter( m_rsa ); return deformatter.DecryptKeyExchange( keyData ); case EncryptedXml.XmlEncRSAOAEPUrl: deformatter = new InfoCardRSAOAEPKeyExchangeDeformatter( m_rsa ); return deformatter.DecryptKeyExchange( keyData ); default: throw IDT.ThrowHelperError( new NotSupportedException( SR.GetString( SR.ClientUnsupportedCryptoAlgorithm, algorithmUri ) ) ); } } // // Summary: // Encrypts a symmetric key using the public key of a public/private key pair. // // Parameters: // algorithmUri - The algorithm to use to encrypt the key. // keyData - the key to encrypt. // public override byte[] EncryptKey( string algorithmUri, byte[] keyData ) { AsymmetricKeyExchangeFormatter formatter; switch (algorithmUri) { case EncryptedXml.XmlEncRSA15Url: formatter = new InfoCardRSAPKCS1KeyExchangeFormatter( m_rsa ); return formatter.CreateKeyExchange( keyData ); case EncryptedXml.XmlEncRSAOAEPUrl: formatter = new InfoCardRSAOAEPKeyExchangeFormatter( m_rsa ); return formatter.CreateKeyExchange( keyData ); default: throw IDT.ThrowHelperError( new NotSupportedException( SR.GetString( SR.ClientUnsupportedCryptoAlgorithm, algorithmUri ) ) ); } } public override bool IsSupportedAlgorithm( string algorithmUri ) { switch (algorithmUri) { case SignedXml.XmlDsigRSASHA1Url: case EncryptedXml.XmlEncRSA15Url: case EncryptedXml.XmlEncRSAOAEPUrl: return true; default: return false; } } public override bool IsSymmetricAlgorithm( string algorithmUri ) { return InfoCardCryptoHelper.IsSymmetricAlgorithm(algorithmUri); } public override bool IsAsymmetricAlgorithm( string algorithmUri ) { return InfoCardCryptoHelper.IsAsymmetricAlgorithm(algorithmUri); } public void Dispose() { ((IDisposable)m_rsa).Dispose(); m_rsa = null; } } } // 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
- InternalBase.cs
- DataViewManager.cs
- DispatchWrapper.cs
- DocumentXPathNavigator.cs
- CheckBox.cs
- WinEventQueueItem.cs
- MouseBinding.cs
- InvocationExpression.cs
- COM2DataTypeToManagedDataTypeConverter.cs
- ToolboxCategoryItems.cs
- Error.cs
- SiteMapNode.cs
- BinaryReader.cs
- ManipulationDeltaEventArgs.cs
- FontWeightConverter.cs
- PageAsyncTask.cs
- EdmProviderManifest.cs
- VisualBasicSettingsConverter.cs
- LogWriteRestartAreaAsyncResult.cs
- _ContextAwareResult.cs
- KeyGesture.cs
- XdrBuilder.cs
- MimeTextImporter.cs
- Point3DCollectionValueSerializer.cs
- TimerElapsedEvenArgs.cs
- CalendarButtonAutomationPeer.cs
- DataColumnPropertyDescriptor.cs
- GenerateTemporaryAssemblyTask.cs
- ClientSponsor.cs
- HttpApplicationStateWrapper.cs
- TiffBitmapEncoder.cs
- GenericArgumentsUpdater.cs
- FixedBufferAttribute.cs
- XPathDocumentBuilder.cs
- SByteStorage.cs
- _NestedMultipleAsyncResult.cs
- SecurityElement.cs
- HttpListenerResponse.cs
- SafeProcessHandle.cs
- ElementAction.cs
- SafeSecurityHandles.cs
- DecoderFallbackWithFailureFlag.cs
- UnsafeNativeMethods.cs
- StaticTextPointer.cs
- UDPClient.cs
- ScrollBarRenderer.cs
- Vector.cs
- MergePropertyDescriptor.cs
- PeerNodeTraceRecord.cs
- RequestResponse.cs
- GridToolTip.cs
- FlowLayout.cs
- Control.cs
- GraphicsContext.cs
- TrustManagerMoreInformation.cs
- IconConverter.cs
- WebConfigManager.cs
- EntityClassGenerator.cs
- SafeMILHandle.cs
- ObjectStorage.cs
- PeekCompletedEventArgs.cs
- DesignerSerializationVisibilityAttribute.cs
- IssuedTokenParametersEndpointAddressElement.cs
- CodeIdentifier.cs
- ApplicationInterop.cs
- FileSystemWatcher.cs
- InheritanceAttribute.cs
- EventLogEntry.cs
- SingleKeyFrameCollection.cs
- SoapAttributeAttribute.cs
- DataGridViewComboBoxEditingControl.cs
- XmlSchemaSequence.cs
- XmlTextEncoder.cs
- PolygonHotSpot.cs
- DispatcherProcessingDisabled.cs
- LocatorPartList.cs
- TreeViewHitTestInfo.cs
- TextElementEditingBehaviorAttribute.cs
- ExclusiveTcpListener.cs
- HuffModule.cs
- ServiceDescriptionContext.cs
- DataControlReferenceCollection.cs
- ThicknessAnimationUsingKeyFrames.cs
- ExternalException.cs
- HashCodeCombiner.cs
- Inline.cs
- EncryptedType.cs
- webclient.cs
- ProfessionalColorTable.cs
- XamlPoint3DCollectionSerializer.cs
- DataAccessException.cs
- StorageAssociationTypeMapping.cs
- LineBreakRecord.cs
- XmlNamespaceManager.cs
- SecurityTraceRecordHelper.cs
- Util.cs
- MeshGeometry3D.cs
- DataServiceResponse.cs
- XmlNodeChangedEventManager.cs
- sqlstateclientmanager.cs