Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / Cryptography / rsa.cs / 1305376 / rsa.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //[....] // // // RSA.cs // namespace System.Security.Cryptography { using System.Text; #if !SILVERLIGHT using System.Runtime.Serialization; using System.Security.Util; #endif // !SILVERLIGHT using System.Globalization; using System.Diagnostics.Contracts; // We allow only the public components of an RSAParameters object, the Modulus and Exponent // to be serializable. #if !SILVERLIGHT [Serializable] [System.Runtime.InteropServices.ComVisible(true)] #endif // !SILVERLIGHT public struct RSAParameters { public byte[] Exponent; public byte[] Modulus; #if SILVERLIGHT public byte[] P; public byte[] Q; public byte[] DP; public byte[] DQ; public byte[] InverseQ; public byte[] D; #else // SILVERLIGHT [NonSerialized] public byte[] P; [NonSerialized] public byte[] Q; [NonSerialized] public byte[] DP; [NonSerialized] public byte[] DQ; [NonSerialized] public byte[] InverseQ; [NonSerialized] public byte[] D; #endif // SILVERLIGHT } #if !SILVERLIGHT [System.Runtime.InteropServices.ComVisible(true)] #endif // !SILVERLIGHT public abstract class RSA : AsymmetricAlgorithm { // // Extending this class allows us to know that you are really implementing // an RSA key. This is required for anybody providing a new RSA key value // implemention. // // The class provides no methods, fields or anything else. Its only purpose is // as a heirarchy member for identification of algorithm. // protected RSA() { } // // public methods // #if !SILVERLIGHT [System.Security.SecuritySafeCritical] // auto-generated new static public RSA Create() { return Create("System.Security.Cryptography.RSA"); } [System.Security.SecuritySafeCritical] // auto-generated new static public RSA Create(String algName) { return (RSA) CryptoConfig.CreateFromName(algName); } // Apply the private key to the data. This function represents a // raw RSA operation -- no implicit depadding of the imput value abstract public byte[] DecryptValue(byte[] rgb); // Apply the public key to the data. Again, this is a raw operation, no // automatic padding. abstract public byte[] EncryptValue(byte[] rgb); // Import/export functions // We can provide a default implementation of FromXmlString because we require // every RSA implementation to implement ImportParameters // All we have to do here is parse the XML. public override void FromXmlString(String xmlString) { if (xmlString == null) throw new ArgumentNullException("xmlString"); Contract.EndContractBlock(); RSAParameters rsaParams = new RSAParameters(); Parser p = new Parser(xmlString); SecurityElement topElement = p.GetTopElement(); // Modulus is always present String modulusString = topElement.SearchForTextOfLocalName("Modulus"); if (modulusString == null) { throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidFromXmlString","RSA","Modulus")); } rsaParams.Modulus = Convert.FromBase64String(Utils.DiscardWhiteSpaces(modulusString)); // Exponent is always present String exponentString = topElement.SearchForTextOfLocalName("Exponent"); if (exponentString == null) { throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidFromXmlString","RSA","Exponent")); } rsaParams.Exponent = Convert.FromBase64String(Utils.DiscardWhiteSpaces(exponentString)); // P is optional String pString = topElement.SearchForTextOfLocalName("P"); if (pString != null) rsaParams.P = Convert.FromBase64String(Utils.DiscardWhiteSpaces(pString)); // Q is optional String qString = topElement.SearchForTextOfLocalName("Q"); if (qString != null) rsaParams.Q = Convert.FromBase64String(Utils.DiscardWhiteSpaces(qString)); // DP is optional String dpString = topElement.SearchForTextOfLocalName("DP"); if (dpString != null) rsaParams.DP = Convert.FromBase64String(Utils.DiscardWhiteSpaces(dpString)); // DQ is optional String dqString = topElement.SearchForTextOfLocalName("DQ"); if (dqString != null) rsaParams.DQ = Convert.FromBase64String(Utils.DiscardWhiteSpaces(dqString)); // InverseQ is optional String inverseQString = topElement.SearchForTextOfLocalName("InverseQ"); if (inverseQString != null) rsaParams.InverseQ = Convert.FromBase64String(Utils.DiscardWhiteSpaces(inverseQString)); // D is optional String dString = topElement.SearchForTextOfLocalName("D"); if (dString != null) rsaParams.D = Convert.FromBase64String(Utils.DiscardWhiteSpaces(dString)); ImportParameters(rsaParams); } // We can provide a default implementation of ToXmlString because we require // every RSA implementation to implement ImportParameters // If includePrivateParameters is false, this is just an XMLDSIG RSAKeyValue // clause. If includePrivateParameters is true, then we extend RSAKeyValue with // the other (private) elements. public override String ToXmlString(bool includePrivateParameters) { // From the XMLDSIG spec, RFC 3075, Section 6.4.2, an RSAKeyValue looks like this: /**/ // we extend appropriately for private components RSAParameters rsaParams = this.ExportParameters(includePrivateParameters); StringBuilder sb = new StringBuilder(); sb.Append(" "); // Add the modulus sb.Append(" "); return(sb.ToString()); } abstract public RSAParameters ExportParameters(bool includePrivateParameters); #endif // !SILVERLIGHT abstract public void ImportParameters(RSAParameters parameters); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //"+Convert.ToBase64String(rsaParams.Modulus)+" "); // Add the exponent sb.Append(""+Convert.ToBase64String(rsaParams.Exponent)+" "); if (includePrivateParameters) { // Add the private components sb.Append(""+Convert.ToBase64String(rsaParams.P)+"
"); sb.Append(""+Convert.ToBase64String(rsaParams.Q)+""); sb.Append(""+Convert.ToBase64String(rsaParams.DP)+" "); sb.Append(""+Convert.ToBase64String(rsaParams.DQ)+" "); sb.Append(""+Convert.ToBase64String(rsaParams.InverseQ)+" "); sb.Append(""+Convert.ToBase64String(rsaParams.D)+" "); } sb.Append("[....] // // // RSA.cs // namespace System.Security.Cryptography { using System.Text; #if !SILVERLIGHT using System.Runtime.Serialization; using System.Security.Util; #endif // !SILVERLIGHT using System.Globalization; using System.Diagnostics.Contracts; // We allow only the public components of an RSAParameters object, the Modulus and Exponent // to be serializable. #if !SILVERLIGHT [Serializable] [System.Runtime.InteropServices.ComVisible(true)] #endif // !SILVERLIGHT public struct RSAParameters { public byte[] Exponent; public byte[] Modulus; #if SILVERLIGHT public byte[] P; public byte[] Q; public byte[] DP; public byte[] DQ; public byte[] InverseQ; public byte[] D; #else // SILVERLIGHT [NonSerialized] public byte[] P; [NonSerialized] public byte[] Q; [NonSerialized] public byte[] DP; [NonSerialized] public byte[] DQ; [NonSerialized] public byte[] InverseQ; [NonSerialized] public byte[] D; #endif // SILVERLIGHT } #if !SILVERLIGHT [System.Runtime.InteropServices.ComVisible(true)] #endif // !SILVERLIGHT public abstract class RSA : AsymmetricAlgorithm { // // Extending this class allows us to know that you are really implementing // an RSA key. This is required for anybody providing a new RSA key value // implemention. // // The class provides no methods, fields or anything else. Its only purpose is // as a heirarchy member for identification of algorithm. // protected RSA() { } // // public methods // #if !SILVERLIGHT [System.Security.SecuritySafeCritical] // auto-generated new static public RSA Create() { return Create("System.Security.Cryptography.RSA"); } [System.Security.SecuritySafeCritical] // auto-generated new static public RSA Create(String algName) { return (RSA) CryptoConfig.CreateFromName(algName); } // Apply the private key to the data. This function represents a // raw RSA operation -- no implicit depadding of the imput value abstract public byte[] DecryptValue(byte[] rgb); // Apply the public key to the data. Again, this is a raw operation, no // automatic padding. abstract public byte[] EncryptValue(byte[] rgb); // Import/export functions // We can provide a default implementation of FromXmlString because we require // every RSA implementation to implement ImportParameters // All we have to do here is parse the XML. public override void FromXmlString(String xmlString) { if (xmlString == null) throw new ArgumentNullException("xmlString"); Contract.EndContractBlock(); RSAParameters rsaParams = new RSAParameters(); Parser p = new Parser(xmlString); SecurityElement topElement = p.GetTopElement(); // Modulus is always present String modulusString = topElement.SearchForTextOfLocalName("Modulus"); if (modulusString == null) { throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidFromXmlString","RSA","Modulus")); } rsaParams.Modulus = Convert.FromBase64String(Utils.DiscardWhiteSpaces(modulusString)); // Exponent is always present String exponentString = topElement.SearchForTextOfLocalName("Exponent"); if (exponentString == null) { throw new CryptographicException(Environment.GetResourceString("Cryptography_InvalidFromXmlString","RSA","Exponent")); } rsaParams.Exponent = Convert.FromBase64String(Utils.DiscardWhiteSpaces(exponentString)); // P is optional String pString = topElement.SearchForTextOfLocalName("P"); if (pString != null) rsaParams.P = Convert.FromBase64String(Utils.DiscardWhiteSpaces(pString)); // Q is optional String qString = topElement.SearchForTextOfLocalName("Q"); if (qString != null) rsaParams.Q = Convert.FromBase64String(Utils.DiscardWhiteSpaces(qString)); // DP is optional String dpString = topElement.SearchForTextOfLocalName("DP"); if (dpString != null) rsaParams.DP = Convert.FromBase64String(Utils.DiscardWhiteSpaces(dpString)); // DQ is optional String dqString = topElement.SearchForTextOfLocalName("DQ"); if (dqString != null) rsaParams.DQ = Convert.FromBase64String(Utils.DiscardWhiteSpaces(dqString)); // InverseQ is optional String inverseQString = topElement.SearchForTextOfLocalName("InverseQ"); if (inverseQString != null) rsaParams.InverseQ = Convert.FromBase64String(Utils.DiscardWhiteSpaces(inverseQString)); // D is optional String dString = topElement.SearchForTextOfLocalName("D"); if (dString != null) rsaParams.D = Convert.FromBase64String(Utils.DiscardWhiteSpaces(dString)); ImportParameters(rsaParams); } // We can provide a default implementation of ToXmlString because we require // every RSA implementation to implement ImportParameters // If includePrivateParameters is false, this is just an XMLDSIG RSAKeyValue // clause. If includePrivateParameters is true, then we extend RSAKeyValue with // the other (private) elements. public override String ToXmlString(bool includePrivateParameters) { // From the XMLDSIG spec, RFC 3075, Section 6.4.2, an RSAKeyValue looks like this: /**/ // we extend appropriately for private components RSAParameters rsaParams = this.ExportParameters(includePrivateParameters); StringBuilder sb = new StringBuilder(); sb.Append(" "); // Add the modulus sb.Append(" "); return(sb.ToString()); } abstract public RSAParameters ExportParameters(bool includePrivateParameters); #endif // !SILVERLIGHT abstract public void ImportParameters(RSAParameters parameters); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007."+Convert.ToBase64String(rsaParams.Modulus)+" "); // Add the exponent sb.Append(""+Convert.ToBase64String(rsaParams.Exponent)+" "); if (includePrivateParameters) { // Add the private components sb.Append(""+Convert.ToBase64String(rsaParams.P)+"
"); sb.Append(""+Convert.ToBase64String(rsaParams.Q)+""); sb.Append(""+Convert.ToBase64String(rsaParams.DP)+" "); sb.Append(""+Convert.ToBase64String(rsaParams.DQ)+" "); sb.Append(""+Convert.ToBase64String(rsaParams.InverseQ)+" "); sb.Append(""+Convert.ToBase64String(rsaParams.D)+" "); } sb.Append("
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- AsymmetricSignatureDeformatter.cs
- StaticFileHandler.cs
- NetSectionGroup.cs
- ControlUtil.cs
- HashMembershipCondition.cs
- ReliabilityContractAttribute.cs
- BoolExpression.cs
- CatalogPartCollection.cs
- ControlSerializer.cs
- InputLanguageCollection.cs
- ReceiveContent.cs
- SerializationStore.cs
- TdsParserStateObject.cs
- ISFClipboardData.cs
- AuthenticatedStream.cs
- TripleDESCryptoServiceProvider.cs
- XmlReader.cs
- DataSourceControl.cs
- StorageAssociationTypeMapping.cs
- DateTimeOffset.cs
- XmlnsDictionary.cs
- Cell.cs
- SurrogateSelector.cs
- SrgsElementFactory.cs
- SqlPersonalizationProvider.cs
- CommonXSendMessage.cs
- PeerEndPoint.cs
- MetadataFile.cs
- ProcessHostFactoryHelper.cs
- TextServicesCompartment.cs
- Dynamic.cs
- PriorityBinding.cs
- NamedPermissionSet.cs
- Delegate.cs
- LocalizationParserHooks.cs
- IdentityNotMappedException.cs
- DBParameter.cs
- LicenseManager.cs
- VisualProxy.cs
- DataGridViewComboBoxEditingControl.cs
- EntityWrapper.cs
- HttpRuntimeSection.cs
- CodeMethodReturnStatement.cs
- FileUtil.cs
- TimeStampChecker.cs
- CommandExpr.cs
- JoinTreeNode.cs
- AdPostCacheSubstitution.cs
- ImageAnimator.cs
- ConstructorExpr.cs
- TreeView.cs
- TaskFormBase.cs
- OleDbCommand.cs
- ListSourceHelper.cs
- SerializationAttributes.cs
- BuildResultCache.cs
- NonPrimarySelectionGlyph.cs
- PersistenceTypeAttribute.cs
- TextTabProperties.cs
- DataServiceRequestException.cs
- FileAuthorizationModule.cs
- LineBreakRecord.cs
- WebPartZone.cs
- NumericUpDownAccelerationCollection.cs
- MediaTimeline.cs
- NumberSubstitution.cs
- EncodingNLS.cs
- BufferedStream.cs
- SkipStoryboardToFill.cs
- FontStretch.cs
- XmlSchemaType.cs
- FormattedTextSymbols.cs
- COSERVERINFO.cs
- ProtectedConfigurationProviderCollection.cs
- DataList.cs
- LiteralTextContainerControlBuilder.cs
- Exception.cs
- HttpModuleActionCollection.cs
- AtlasWeb.Designer.cs
- UpdateManifestForBrowserApplication.cs
- mediaeventshelper.cs
- ContentFilePart.cs
- XPathChildIterator.cs
- Registry.cs
- SiteOfOriginContainer.cs
- InputQueue.cs
- BindingUtils.cs
- SystemColorTracker.cs
- ObjectItemCollection.cs
- XmlQueryTypeFactory.cs
- MsmqNonTransactedPoisonHandler.cs
- ConsumerConnectionPointCollection.cs
- InstanceCreationEditor.cs
- _ConnectOverlappedAsyncResult.cs
- DataTableExtensions.cs
- XmlSchemaFacet.cs
- ColumnCollection.cs
- Reference.cs
- CorrelationTokenTypeConvertor.cs
- SourceSwitch.cs