Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / clr / src / BCL / System / Security / Cryptography / RSAPKCS1SignatureDeformatter.cs / 1 / RSAPKCS1SignatureDeformatter.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // RSAPKCS1SignatureDeformatter.cs // namespace System.Security.Cryptography { [System.Runtime.InteropServices.ComVisible(true)] public class RSAPKCS1SignatureDeformatter : AsymmetricSignatureDeformatter { // // This class provides the PKCS#1 v1.5 signature format processing during // the verification process (i.e. decrypting the object). The class has // some special code for dealing with the CSP based RSA keys as the // formatting and verification is done within the CSP rather than in // managed code. // private RSA _rsaKey; // RSA Key value to do decrypt operation private String _strOID; // OID value for the HASH algorithm // // public constructors // public RSAPKCS1SignatureDeformatter() {} public RSAPKCS1SignatureDeformatter(AsymmetricAlgorithm key) { if (key == null) throw new ArgumentNullException("key"); _rsaKey = (RSA) key; } // // public methods // public override void SetKey(AsymmetricAlgorithm key) { if (key == null) throw new ArgumentNullException("key"); _rsaKey = (RSA) key; } public override void SetHashAlgorithm(String strName) { _strOID = CryptoConfig.MapNameToOID(strName); } public override bool VerifySignature(byte[] rgbHash, byte[] rgbSignature) { if (_strOID == null) throw new CryptographicUnexpectedOperationException(Environment.GetResourceString("Cryptography_MissingOID")); if (_rsaKey == null) throw new CryptographicUnexpectedOperationException(Environment.GetResourceString("Cryptography_MissingKey")); if (rgbHash == null) throw new ArgumentNullException("rgbHash"); if (rgbSignature == null) throw new ArgumentNullException("rgbSignature"); // Two cases here -- if we are talking to the CSP version or if we are talking to some other RSA provider. if (_rsaKey is RSACryptoServiceProvider) { return ((RSACryptoServiceProvider) _rsaKey).VerifyHash(rgbHash, _strOID, rgbSignature); } else { byte[] pad = Utils.RsaPkcs1Padding(_rsaKey, CryptoConfig.EncodeOID(_strOID), rgbHash); // Apply the public key to the signature data to get back the padded buffer actually signed. // Compare the two buffers to see if they match; ignoring any leading zeros return Utils.CompareBigIntArrays(_rsaKey.EncryptValue(rgbSignature), pad); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // RSAPKCS1SignatureDeformatter.cs // namespace System.Security.Cryptography { [System.Runtime.InteropServices.ComVisible(true)] public class RSAPKCS1SignatureDeformatter : AsymmetricSignatureDeformatter { // // This class provides the PKCS#1 v1.5 signature format processing during // the verification process (i.e. decrypting the object). The class has // some special code for dealing with the CSP based RSA keys as the // formatting and verification is done within the CSP rather than in // managed code. // private RSA _rsaKey; // RSA Key value to do decrypt operation private String _strOID; // OID value for the HASH algorithm // // public constructors // public RSAPKCS1SignatureDeformatter() {} public RSAPKCS1SignatureDeformatter(AsymmetricAlgorithm key) { if (key == null) throw new ArgumentNullException("key"); _rsaKey = (RSA) key; } // // public methods // public override void SetKey(AsymmetricAlgorithm key) { if (key == null) throw new ArgumentNullException("key"); _rsaKey = (RSA) key; } public override void SetHashAlgorithm(String strName) { _strOID = CryptoConfig.MapNameToOID(strName); } public override bool VerifySignature(byte[] rgbHash, byte[] rgbSignature) { if (_strOID == null) throw new CryptographicUnexpectedOperationException(Environment.GetResourceString("Cryptography_MissingOID")); if (_rsaKey == null) throw new CryptographicUnexpectedOperationException(Environment.GetResourceString("Cryptography_MissingKey")); if (rgbHash == null) throw new ArgumentNullException("rgbHash"); if (rgbSignature == null) throw new ArgumentNullException("rgbSignature"); // Two cases here -- if we are talking to the CSP version or if we are talking to some other RSA provider. if (_rsaKey is RSACryptoServiceProvider) { return ((RSACryptoServiceProvider) _rsaKey).VerifyHash(rgbHash, _strOID, rgbSignature); } else { byte[] pad = Utils.RsaPkcs1Padding(_rsaKey, CryptoConfig.EncodeOID(_strOID), rgbHash); // Apply the public key to the signature data to get back the padded buffer actually signed. // Compare the two buffers to see if they match; ignoring any leading zeros return Utils.CompareBigIntArrays(_rsaKey.EncryptValue(rgbSignature), pad); } } } } // 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
- NativeMethods.cs
- ProfileSection.cs
- XmlSchemaAnyAttribute.cs
- CellQuery.cs
- XamlStyleSerializer.cs
- WindowsAuthenticationModule.cs
- ExpressionConverter.cs
- TextPointerBase.cs
- BitmapDecoder.cs
- StringFormat.cs
- Int32CollectionValueSerializer.cs
- VisualStyleInformation.cs
- SafePipeHandle.cs
- SymDocumentType.cs
- UnsignedPublishLicense.cs
- MediaTimeline.cs
- HttpWriter.cs
- DesignerSerializationOptionsAttribute.cs
- ToolStripSystemRenderer.cs
- MemberInfoSerializationHolder.cs
- Matrix3DStack.cs
- DrawingGroup.cs
- ParseNumbers.cs
- StrongName.cs
- Crc32Helper.cs
- TreeNodeBindingCollection.cs
- AdapterSwitches.cs
- PackageStore.cs
- PropertyFilterAttribute.cs
- HttpCacheVary.cs
- SnapLine.cs
- Quad.cs
- ExceptionValidationRule.cs
- ExtensionSurface.cs
- StyleBamlRecordReader.cs
- EndpointIdentity.cs
- DataGridViewCell.cs
- SqlUserDefinedTypeAttribute.cs
- BindingExpressionBase.cs
- XamlToRtfParser.cs
- _NtlmClient.cs
- StateMachineWorkflowInstance.cs
- ListViewEditEventArgs.cs
- NonParentingControl.cs
- SizeConverter.cs
- ContentElement.cs
- Signature.cs
- Pointer.cs
- XsltException.cs
- EmbeddedObject.cs
- _NegoStream.cs
- Soap.cs
- GrammarBuilderRuleRef.cs
- PeerNearMe.cs
- WorkflowMarkupSerializationProvider.cs
- PropertyEntry.cs
- SafeArrayRankMismatchException.cs
- RealizationContext.cs
- InputBinder.cs
- BitmapCodecInfo.cs
- DesignerPerfEventProvider.cs
- TransformationRules.cs
- ServiceAuthorizationManager.cs
- controlskin.cs
- SqlSelectClauseBuilder.cs
- IISMapPath.cs
- StatusBar.cs
- NullRuntimeConfig.cs
- RightsDocument.cs
- Parser.cs
- SchemaMapping.cs
- Module.cs
- ScrollBar.cs
- DataAccessor.cs
- SmiSettersStream.cs
- UITypeEditor.cs
- PermissionToken.cs
- SqlNotificationEventArgs.cs
- _PooledStream.cs
- AppliesToBehaviorDecisionTable.cs
- InvalidAsynchronousStateException.cs
- MimeMultiPart.cs
- Socket.cs
- XmlSchemaException.cs
- FaultImportOptions.cs
- SoapClientMessage.cs
- RequestStatusBarUpdateEventArgs.cs
- HtmlTernaryTree.cs
- WebReferencesBuildProvider.cs
- QilStrConcat.cs
- MemberPath.cs
- AssemblyHash.cs
- AnnotationHelper.cs
- FieldBuilder.cs
- SchemaNotation.cs
- TableLayoutPanelDesigner.cs
- BulletChrome.cs
- IndicFontClient.cs
- CellTreeNode.cs
- TileBrush.cs