KeyInfo.AddClause メソッド
特定の種類の KeyInfo 情報を表している KeyInfoClause を KeyInfo オブジェクトに追加します。
名前空間: System.Security.Cryptography.Xml
アセンブリ: System.Security (system.security.dll 内)
構文
使用例
プラットフォーム
バージョン情報
参照
アセンブリ: System.Security (system.security.dll 内)
構文使用例KeyInfo オブジェクトを使用して、URI (Universal Resource Identifier) で表されるリソースに署名するコード例を次に示します。この例では、新しいファイルに署名を保存します。
' ' This example signs a file specified by a URI ' using a detached signature. It then verifies ' the signed XML. ' Imports System Imports System.Security.Cryptography Imports System.Security.Cryptography.Xml Imports System.Text Imports System.Xml Class XMLDSIGDetached <STAThread()> _ Overloads Shared Sub Main(args() As String) ' The URI to sign. Dim resourceToSign As String = "http://www.microsoft.com" ' The name of the file to which to save the XML signature. Dim XmlFileName As String = "xmldsig.xml" Try ' Generate a signing key. Dim Key As New RSACryptoServiceProvider() Console.WriteLine("Signing: {0}", resourceToSign) ' Sign the detached resourceand save the signature in an XML file. SignDetachedResource(resourceToSign, XmlFileName, Key) Console.WriteLine("XML signature was succesfully computed and saved to {0}.", XmlFileName) ' Verify the signature of the signed XML. Console.WriteLine("Verifying signature...") 'Verify the XML signature in the XML file. Dim result As Boolean = VerifyDetachedSignature(XmlFileName) ' Display the results of the signature verification to ' the console. If result Then Console.WriteLine("The XML signature is valid.") Else Console.WriteLine("The XML signature is not valid.") End If Catch e As CryptographicException Console.WriteLine(e.Message) End Try End Sub ' Sign an XML file and save the signature in a new file. Public Shared Sub SignDetachedResource(URIString As String, XmlSigFileName As String, Key As RSA) ' Create a SignedXml object. Dim signedXml As New SignedXml() ' Assign the key to the SignedXml object. signedXml.SigningKey = Key ' Create a reference to be signed. Dim reference As New Reference() ' Add the passed URI to the reference object. reference.Uri = URIString ' Add the reference to the SignedXml object. signedXml.AddReference(reference) ' Add an RSAKeyValue KeyInfo (optional; helps recipient find key to validate). Dim keyInfo As New KeyInfo() keyInfo.AddClause(New RSAKeyValue(CType(Key, RSA))) signedXml.KeyInfo = keyInfo ' Compute the signature. signedXml.ComputeSignature() ' Get the XML representation of the signature and save ' it to an XmlElement object. Dim xmlDigitalSignature As XmlElement = signedXml.GetXml() ' Save the signed XML document to a file specified ' using the passed string. Dim xmltw As New XmlTextWriter(XmlSigFileName, New UTF8Encoding(False)) xmlDigitalSignature.WriteTo(xmltw) xmltw.Close() End Sub ' Verify the signature of an XML file and return the result. Public Shared Function VerifyDetachedSignature(XmlSigFileName As String) As [Boolean] ' Create a new XML document. Dim xmlDocument As New XmlDocument() ' Load the passed XML file into the document. xmlDocument.Load(XmlSigFileName) ' Create a new SignedXMl object. Dim signedXml As New SignedXml() ' Find the "Signature" node and create a new ' XmlNodeList object. Dim nodeList As XmlNodeList = xmlDocument.GetElementsByTagName("Signature") ' Load the signature node. signedXml.LoadXml(CType(nodeList(0), XmlElement)) ' Check the signature and return the result. Return signedXml.CheckSignature() End Function End Class
// // This example signs a file specified by a URI // using a detached signature. It then verifies // the signed XML. // using System; using System.Security.Cryptography; using System.Security.Cryptography.Xml; using System.Text; using System.Xml; class XMLDSIGDetached { [STAThread] static void Main(string[] args) { // The URI to sign. string resourceToSign = "http://www.microsoft.com"; // The name of the file to which to save the XML signature. string XmlFileName = "xmldsig.xml"; try { // Generate a signing key. RSACryptoServiceProvider Key = new RSACryptoServiceProvider(); Console.WriteLine("Signing: {0}", resourceToSign); // Sign the detached resourceand save the signature in an XML file. SignDetachedResource(resourceToSign, XmlFileName, Key); Console.WriteLine("XML signature was succesfully computed and saved to {0}.", XmlFileName); // Verify the signature of the signed XML. Console.WriteLine("Verifying signature..."); //Verify the XML signature in the XML file. bool result = VerifyDetachedSignature(XmlFileName); // Display the results of the signature verification to // the console. if(result) { Console.WriteLine("The XML signature is valid."); } else { Console.WriteLine("The XML signature is not valid."); } } catch(CryptographicException e) { Console.WriteLine(e.Message); } } // Sign an XML file and save the signature in a new file. public static void SignDetachedResource(string URIString, string XmlSigFileName, RSA Key) { // Create a SignedXml object. SignedXml signedXml = new SignedXml(); // Assign the key to the SignedXml object. signedXml.SigningKey = Key; // Create a reference to be signed. Reference reference = new Reference(); // Add the passed URI to the reference object. reference.Uri = URIString; // Add the reference to the SignedXml object. signedXml.AddReference(reference); // Add an RSAKeyValue KeyInfo (optional; helps recipient find key to validate). KeyInfo keyInfo = new KeyInfo(); keyInfo.AddClause(new RSAKeyValue((RSA)Key)); signedXml.KeyInfo = keyInfo; // Compute the signature. signedXml.ComputeSignature(); // Get the XML representation of the signature and save // it to an XmlElement object. XmlElement xmlDigitalSignature = signedXml.GetXml(); // Save the signed XML document to a file specified // using the passed string. XmlTextWriter xmltw = new XmlTextWriter(XmlSigFileName, new UTF8Encoding(false)); xmlDigitalSignature.WriteTo(xmltw); xmltw.Close(); } // Verify the signature of an XML file and return the result. public static Boolean VerifyDetachedSignature(string XmlSigFileName) { // Create a new XML document. XmlDocument xmlDocument = new XmlDocument(); // Load the passed XML file into the document. xmlDocument.Load(XmlSigFileName); // Create a new SignedXMl object. SignedXml signedXml = new SignedXml(); // Find the "Signature" node and create a new // XmlNodeList object. XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature"); // Load the signature node. signedXml.LoadXml((XmlElement)nodeList[0]); // Check the signature and return the result. return signedXml.CheckSignature(); } }
// // This example signs a file specified by a URI // using a detached signature. It then verifies // the signed XML. // #using <System.Security.dll> #using <System.Xml.dll> using namespace System; using namespace System::Security::Cryptography; using namespace System::Security::Cryptography::Xml; using namespace System::Text; using namespace System::Xml; // Sign an XML file and save the signature in a new file. void SignDetachedResource( String^ URIString, String^ XmlSigFileName, RSA^ Key ) { // Create a SignedXml object. SignedXml^ signedXml = gcnew SignedXml; // Assign the key to the SignedXml object. signedXml->SigningKey = Key; // Create a reference to be signed. Reference^ reference = gcnew Reference; // Add the passed URI to the reference object. reference->Uri = URIString; // Add the reference to the SignedXml object. signedXml->AddReference( reference ); // Add an RSAKeyValue KeyInfo (optional; helps recipient find key to validate). KeyInfo^ keyInfo = gcnew KeyInfo; keyInfo->AddClause( gcnew RSAKeyValue( safe_cast<RSA^>(Key) ) ); signedXml->KeyInfo = keyInfo; // Compute the signature. signedXml->ComputeSignature(); // Get the XML representation of the signature and save // it to an XmlElement object. XmlElement^ xmlDigitalSignature = signedXml->GetXml(); // Save the signed XML document to a file specified // using the passed string. XmlTextWriter^ xmltw = gcnew XmlTextWriter( XmlSigFileName,gcnew UTF8Encoding( false ) ); xmlDigitalSignature->WriteTo( xmltw ); xmltw->Close(); } // Verify the signature of an XML file and return the result. Boolean VerifyDetachedSignature( String^ XmlSigFileName ) { // Create a new XML document. XmlDocument^ xmlDocument = gcnew XmlDocument; // Load the passed XML file into the document. xmlDocument->Load( XmlSigFileName ); // Create a new SignedXMl object. SignedXml^ signedXml = gcnew SignedXml; // Find the "Signature" node and create a new // XmlNodeList object. XmlNodeList^ nodeList = xmlDocument->GetElementsByTagName( "Signature" ); // Load the signature node. signedXml->LoadXml( safe_cast<XmlElement^>(nodeList->Item( 0 )) ); // Check the signature and return the result. return signedXml->CheckSignature(); } [STAThread] int main() { array<String^>^args = Environment::GetCommandLineArgs(); // The URI to sign. String^ resourceToSign = "http://www.microsoft.com"; // The name of the file to which to save the XML signature. String^ XmlFileName = "xmldsig.xml"; try { // Generate a signing key. RSACryptoServiceProvider^ Key = gcnew RSACryptoServiceProvider; Console::WriteLine( "Signing: {0}", resourceToSign ); // Sign the detached resourceand save the signature in an XML file. SignDetachedResource( resourceToSign, XmlFileName, Key ); Console::WriteLine( "XML signature was succesfully computed and saved to {0}.", XmlFileName ); // Verify the signature of the signed XML. Console::WriteLine( "Verifying signature..." ); //Verify the XML signature in the XML file. bool result = VerifyDetachedSignature( XmlFileName ); // Display the results of the signature verification to // the console. if ( result ) { Console::WriteLine( "The XML signature is valid." ); } else { Console::WriteLine( "The XML signature is not valid." ); } } catch ( CryptographicException^ e ) { Console::WriteLine( e->Message ); } }
// // This example signs a file specified by a URI // using a detached signature. It then verifies // the signed XML. // import System .* ; import System.Security.Cryptography .* ; import System.Security.Cryptography.Xml .* ; import System.Text .* ; import System.Xml .* ; class XMLDSIGDetached { /** @attribute STAThread() */ public static void main(String[] args) { // The URI to sign. String resourceToSign = "http://www.microsoft.com"; // The name of the file to which to save the XML signature. String xmlFileName = "xmldsig.xml"; try { // Generate a signing key. RSACryptoServiceProvider key = new RSACryptoServiceProvider(); Console.WriteLine("Signing: {0}", resourceToSign); // Sign the detached resourceand save the signature in an XML file. SignDetachedResource(resourceToSign, xmlFileName, key); Console.WriteLine("XML signature was succesfully computed " + "and saved to {0}.", xmlFileName); // Verify the signature of the signed XML. Console.WriteLine("Verifying signature..."); //Verify the XML signature in the XML file. boolean result = VerifyDetachedSignature(xmlFileName).booleanValue(); // Display the results of the signature verification to // the console. if (result) { Console.WriteLine("The XML signature is valid."); } else { Console.WriteLine("The XML signature is not valid."); } } catch (CryptographicException e) { Console.WriteLine(e.get_Message()); } } //main // Sign an XML file and save the signature in a new file. public static void SignDetachedResource(String uriString, String xmlSigFileName, RSA key) { // Create a SignedXml object. SignedXml signedXml = new SignedXml(); // Assign the key to the SignedXml object. signedXml.set_SigningKey(key); // Create a reference to be signed. Reference reference = new Reference(); // Add the passed URI to the reference object. reference.set_Uri(uriString); // Add a transformation if the URI is an XML file. if (uriString.EndsWith("xml")) { reference.AddTransform(new XmlDsigC14NTransform()); } // Add the reference to the SignedXml object. signedXml.AddReference(reference); // Add an RSAKeyValue KeyInfo (optional; helps recipient // find key to validate). KeyInfo keyInfo = new KeyInfo(); keyInfo.AddClause(new RSAKeyValue(((RSA)(key)))); signedXml.set_KeyInfo(keyInfo); // Compute the signature. signedXml.ComputeSignature(); // Get the XML representation of the signature and save // it to an XmlElement object. XmlElement xmlDigitalSignature = signedXml.GetXml(); // Save the signed XML document to a file specified // using the passed string. XmlTextWriter xmlTW = new XmlTextWriter(xmlSigFileName, new UTF8Encoding(false)); xmlDigitalSignature.WriteTo(xmlTW); xmlTW.Close(); } //SignDetachedResource // Verify the signature of an XML file and return the result. public static Boolean VerifyDetachedSignature(String xmlSigFileName) { // Create a new XML document. XmlDocument xmlDocument = new XmlDocument(); // Load the passed XML file into the document. xmlDocument.Load(xmlSigFileName); // Create a new SignedXMl object. SignedXml signedXml = new SignedXml(); // Find the "Signature" node and create a new // XmlNodeList object. XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature"); // Load the signature node. signedXml.LoadXml(((XmlElement)(nodeList.get_ItemOf(0)))); // Check the signature and return the result. return new Boolean(signedXml.CheckSignature()); } //VerifyDetachedSignature } //XMLDSIGDetached
KeyInfo オブジェクトを使用して、XML ドキュメントに署名するコード例を次に示します。この例では、新しいファイルに署名を保存します。
' ' This example signs an XML file using an ' envelope signature. It then verifies the ' signed XML. ' Imports System Imports System.Security.Cryptography Imports System.Security.Cryptography.X509Certificates Imports System.Security.Cryptography.Xml Imports System.Text Imports System.Xml Public Class SignVerifyEnvelope Overloads Public Shared Sub Main(args() As [String]) Try ' Generate a signing key. Dim Key As New RSACryptoServiceProvider() ' Create an XML file to sign. CreateSomeXml("Example.xml") Console.WriteLine("New XML file created.") ' Sign the XML that was just created and save it in a ' new file. SignXmlFile("Example.xml", "SignedExample.xml", Key) Console.WriteLine("XML file signed.") ' Verify the signature of the signed XML. Console.WriteLine("Verifying signature...") Dim result As Boolean = VerifyXmlFile("SignedExample.xml") ' Display the results of the signature verification to \ ' the console. If result Then Console.WriteLine("The XML signature is valid.") Else Console.WriteLine("The XML signature is not valid.") End If Catch e As CryptographicException Console.WriteLine(e.Message) End Try End Sub ' Sign an XML file and save the signature in a new file. Public Shared Sub SignXmlFile(FileName As String, SignedFileName As String, Key As RSA) ' Create a new XML document. Dim doc As New XmlDocument() ' Format the document to ignore white spaces. doc.PreserveWhitespace = False ' Load the passed XML file using it's name. doc.Load(New XmlTextReader(FileName)) ' Create a SignedXml object. Dim signedXml As New SignedXml(doc) ' Add the key to the SignedXml document. signedXml.SigningKey = Key ' Create a reference to be signed. Dim reference As New Reference() reference.Uri = "" ' Add an enveloped transformation to the reference. Dim env As New XmlDsigEnvelopedSignatureTransform() reference.AddTransform(env) ' Add the reference to the SignedXml object. signedXml.AddReference(reference) ' Add an RSAKeyValue KeyInfo (optional; helps recipient find key to validate). Dim keyInfo As New KeyInfo() keyInfo.AddClause(New RSAKeyValue(CType(Key, RSA))) signedXml.KeyInfo = keyInfo ' Compute the signature. signedXml.ComputeSignature() ' Get the XML representation of the signature and save ' it to an XmlElement object. Dim xmlDigitalSignature As XmlElement = signedXml.GetXml() ' Append the element to the XML document. doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, True)) If TypeOf doc.FirstChild Is XmlDeclaration Then doc.RemoveChild(doc.FirstChild) End If ' Save the signed XML document to a file specified ' using the passed string. Dim xmltw As New XmlTextWriter(SignedFileName, New UTF8Encoding(False)) doc.WriteTo(xmltw) xmltw.Close() End Sub ' Verify the signature of an XML file and return the result. Public Shared Function VerifyXmlFile(Name As [String]) As [Boolean] ' Create a new XML document. Dim xmlDocument As New XmlDocument() ' Format using white spaces. xmlDocument.PreserveWhitespace = True ' Load the passed XML file into the document. xmlDocument.Load(Name) ' Create a new SignedXml object and pass it ' the XML document class. Dim signedXml As New SignedXml(xmlDocument) ' Find the "Signature" node and create a new ' XmlNodeList object. Dim nodeList As XmlNodeList = xmlDocument.GetElementsByTagName("Signature") ' Load the signature node. signedXml.LoadXml(CType(nodeList(0), XmlElement)) ' Check the signature and return the result. Return signedXml.CheckSignature() End Function ' Create example data to sign. Public Shared Sub CreateSomeXml(FileName As String) ' Create a new XmlDocument object. Dim document As New XmlDocument() ' Create a new XmlNode object. Dim node As XmlNode = document.CreateNode(XmlNodeType.Element, "", "MyElement", "samples") ' Add some text to the node. node.InnerText = "Example text to be signed." ' Append the node to the document. document.AppendChild(node) ' Save the XML document to the file name specified. Dim xmltw As New XmlTextWriter(FileName, New UTF8Encoding(False)) document.WriteTo(xmltw) xmltw.Close() End Sub End Class
// // This example signs an XML file using an // envelope signature. It then verifies the // signed XML. // using System; using System.Security.Cryptography; using System.Security.Cryptography.X509Certificates; using System.Security.Cryptography.Xml; using System.Text; using System.Xml; public class SignVerifyEnvelope { public static void Main(String[] args) { try { // Generate a signing key. RSACryptoServiceProvider Key = new RSACryptoServiceProvider(); // Create an XML file to sign. CreateSomeXml("Example.xml"); Console.WriteLine("New XML file created."); // Sign the XML that was just created and save it in a // new file. SignXmlFile("Example.xml", "SignedExample.xml", Key); Console.WriteLine("XML file signed."); // Verify the signature of the signed XML. Console.WriteLine("Verifying signature..."); bool result = VerifyXmlFile("SignedExample.xml"); // Display the results of the signature verification to \ // the console. if(result) { Console.WriteLine("The XML signature is valid."); } else { Console.WriteLine("The XML signature is not valid."); } } catch(CryptographicException e) { Console.WriteLine(e.Message); } } // Sign an XML file and save the signature in a new file. public static void SignXmlFile(string FileName, string SignedFileName, RSA Key) { // Create a new XML document. XmlDocument doc = new XmlDocument(); // Format the document to ignore white spaces. doc.PreserveWhitespace = false; // Load the passed XML file using it's name. doc.Load(new XmlTextReader(FileName)); // Create a SignedXml object. SignedXml signedXml = new SignedXml(doc); // Add the key to the SignedXml document. signedXml.SigningKey = Key; // Create a reference to be signed. Reference reference = new Reference(); reference.Uri = ""; // Add an enveloped transformation to the reference. XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform(); reference.AddTransform(env); // Add the reference to the SignedXml object. signedXml.AddReference(reference); // Add an RSAKeyValue KeyInfo (optional; helps recipient find key to validate). KeyInfo keyInfo = new KeyInfo(); keyInfo.AddClause(new RSAKeyValue((RSA)Key)); signedXml.KeyInfo = keyInfo; // Compute the signature. signedXml.ComputeSignature(); // Get the XML representation of the signature and save // it to an XmlElement object. XmlElement xmlDigitalSignature = signedXml.GetXml(); // Append the element to the XML document. doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, true)); if (doc.FirstChild is XmlDeclaration) { doc.RemoveChild(doc.FirstChild); } // Save the signed XML document to a file specified // using the passed string. XmlTextWriter xmltw = new XmlTextWriter(SignedFileName, new UTF8Encoding(false)); doc.WriteTo(xmltw); xmltw.Close(); } // Verify the signature of an XML file and return the result. public static Boolean VerifyXmlFile(String Name) { // Create a new XML document. XmlDocument xmlDocument = new XmlDocument(); // Format using white spaces. xmlDocument.PreserveWhitespace = true; // Load the passed XML file into the document. xmlDocument.Load(Name); // Create a new SignedXml object and pass it // the XML document class. SignedXml signedXml = new SignedXml(xmlDocument); // Find the "Signature" node and create a new // XmlNodeList object. XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature"); // Load the signature node. signedXml.LoadXml((XmlElement)nodeList[0]); // Check the signature and return the result. return signedXml.CheckSignature(); } // Create example data to sign. public static void CreateSomeXml(string FileName) { // Create a new XmlDocument object. XmlDocument document = new XmlDocument(); // Create a new XmlNode object. XmlNode node = document.CreateNode(XmlNodeType.Element, "", "MyElement", "samples"); // Add some text to the node. node.InnerText = "Example text to be signed."; // Append the node to the document. document.AppendChild(node); // Save the XML document to the file name specified. XmlTextWriter xmltw = new XmlTextWriter(FileName, new UTF8Encoding(false)); document.WriteTo(xmltw); xmltw.Close(); } }
// // This example signs an XML file using an // envelope signature. It then verifies the // signed XML. // #using <System.Security.dll> #using <System.Xml.dll> using namespace System; using namespace System::Security::Cryptography; using namespace System::Security::Cryptography::X509Certificates; using namespace System::Security::Cryptography::Xml; using namespace System::Text; using namespace System::Xml; // Sign an XML file and save the signature in a new file. void SignXmlFile( String^ FileName, String^ SignedFileName, RSA^ Key ) { // Create a new XML document. XmlDocument^ doc = gcnew XmlDocument; // Format the document to ignore white spaces. doc->PreserveWhitespace = false; // Load the passed XML file using its name. doc->Load( gcnew XmlTextReader( FileName ) ); // Create a SignedXml object. SignedXml^ signedXml = gcnew SignedXml( doc ); // Add the key to the SignedXml document. signedXml->SigningKey = Key; // Create a reference to be signed. Reference^ reference = gcnew Reference; reference->Uri = ""; // Add an enveloped transformation to the reference. XmlDsigEnvelopedSignatureTransform^ env = gcnew XmlDsigEnvelopedSignatureTransform; reference->AddTransform( env ); // Add the reference to the SignedXml object. signedXml->AddReference( reference ); // Add an RSAKeyValue KeyInfo (optional; helps recipient find key to validate). KeyInfo^ keyInfo = gcnew KeyInfo; keyInfo->AddClause( gcnew RSAKeyValue( safe_cast<RSA^>(Key) ) ); signedXml->KeyInfo = keyInfo; // Compute the signature. signedXml->ComputeSignature(); // Get the XML representation of the signature and save // it to an XmlElement object. XmlElement^ xmlDigitalSignature = signedXml->GetXml(); // Append the element to the XML document. doc->DocumentElement->AppendChild( doc->ImportNode( xmlDigitalSignature, true ) ); if ( (doc->FirstChild)->GetType() == XmlDeclaration::typeid ) { doc->RemoveChild( doc->FirstChild ); } // Save the signed XML document to a file specified // using the passed string. XmlTextWriter^ xmltw = gcnew XmlTextWriter( SignedFileName,gcnew UTF8Encoding( false ) ); doc->WriteTo( xmltw ); xmltw->Close(); } // Verify the signature of an XML file and return the result. Boolean VerifyXmlFile( String^ Name ) { // Create a new XML document. XmlDocument^ xmlDocument = gcnew XmlDocument; // Format using white spaces. xmlDocument->PreserveWhitespace = true; // Load the passed XML file into the document. xmlDocument->Load( Name ); // Create a new SignedXml object and pass it // the XML document class. SignedXml^ signedXml = gcnew SignedXml( xmlDocument ); // Find the "Signature" node and create a new // XmlNodeList object. XmlNodeList^ nodeList = xmlDocument->GetElementsByTagName( "Signature" ); // Load the signature node. signedXml->LoadXml( safe_cast<XmlElement^>(nodeList->Item( 0 )) ); // Check the signature and return the result. return signedXml->CheckSignature(); } // Create example data to sign. void CreateSomeXml( String^ FileName ) { // Create a new XmlDocument object. XmlDocument^ document = gcnew XmlDocument; // Create a new XmlNode object. XmlNode^ node = document->CreateNode( XmlNodeType::Element, "", "MyElement", "samples" ); // Add some text to the node. node->InnerText = "Example text to be signed."; // Append the node to the document. document->AppendChild( node ); // Save the XML document to the file name specified. XmlTextWriter^ xmltw = gcnew XmlTextWriter( FileName,gcnew UTF8Encoding( false ) ); document->WriteTo( xmltw ); xmltw->Close(); } int main() { try { // Generate a signing key. RSACryptoServiceProvider^ Key = gcnew RSACryptoServiceProvider; // Create an XML file to sign. CreateSomeXml( "Example.xml" ); Console::WriteLine( "New XML file created." ); // Sign the XML that was just created and save it in a // new file. SignXmlFile( "Example.xml", "SignedExample.xml", Key ); Console::WriteLine( "XML file signed." ); // Verify the signature of the signed XML. Console::WriteLine( "Verifying signature..." ); bool result = VerifyXmlFile( "SignedExample.xml" ); // Display the results of the signature verification to // the console. if ( result ) { Console::WriteLine( "The XML signature is valid." ); } else { Console::WriteLine( "The XML signature is not valid." ); } } catch ( CryptographicException^ e ) { Console::WriteLine( e->Message ); } }
// // This example signs an XML file using an // envelope signature. It then verifies the // signed XML. // import System.*; import System.Security.Cryptography.*; import System.Security.Cryptography.X509Certificates.*; import System.Security.Cryptography.Xml.*; import System.Text.*; import System.Xml.*; public class SignVerifyEnvelope { public static void main(String[] args) { try { // Generate a signing key. RSACryptoServiceProvider key = new RSACryptoServiceProvider(); // Create an XML file to sign. CreateSomeXml("Example.xml"); Console.WriteLine("New XML file created."); // Sign the XML that was just created and save it in a // new file. SignXmlFile("Example.xml", "SignedExample.xml", key); Console.WriteLine("XML file signed."); // Verify the signature of the signed XML. Console.WriteLine("Verifying signature..."); boolean result = VerifyXmlFile("SignedExample.xml").booleanValue(); // Display the results of the signature verification to \ // the console. if (result) { Console.WriteLine("The XML signature is valid."); } else { Console.WriteLine("The XML signature is not valid."); } } catch (CryptographicException e) { Console.WriteLine(e.get_Message()); } } //main // Sign an XML file and save the signature in a new file. public static void SignXmlFile(String fileName, String signedFileName, RSA key) { // Create a new XML document. XmlDocument doc = new XmlDocument(); // Format the document to ignore white spaces. doc.set_PreserveWhitespace(false); // Load the passed XML file using it's name. doc.Load(new XmlTextReader(fileName)); // Create a SignedXml object. SignedXml signedXml = new SignedXml(doc); // Add the key to the SignedXml document. signedXml.set_SigningKey(key); // Create a reference to be signed. Reference reference = new Reference(); reference.set_Uri(""); // Add a transformation to the reference. Transform trns = new XmlDsigC14NTransform(); reference.AddTransform(trns); // Add an enveloped transformation to the reference. XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform(); reference.AddTransform(env); // Add the reference to the SignedXml object. signedXml.AddReference(reference); // Add an RSAKeyValue KeyInfo (optional; helps recipient // find key to validate). KeyInfo keyInfo = new KeyInfo(); keyInfo.AddClause(new RSAKeyValue(((RSA)(key)))); signedXml.set_KeyInfo(keyInfo); // Compute the signature. signedXml.ComputeSignature(); // Get the XML representation of the signature and save // it to an XmlElement object. XmlElement xmlDigitalSignature = signedXml.GetXml(); // Append the element to the XML document. doc.get_DocumentElement().AppendChild(doc.ImportNode( xmlDigitalSignature, true)); if (doc.get_FirstChild() instanceof XmlDeclaration) { doc.RemoveChild(doc.get_FirstChild()); } // Save the signed XML document to a file specified // using the passed string. XmlTextWriter xmlTW = new XmlTextWriter(signedFileName, new UTF8Encoding(false)); doc.WriteTo(xmlTW); xmlTW.Close(); } //SignXmlFile // Verify the signature of an XML file and return the result. public static Boolean VerifyXmlFile(String name) { // Create a new XML document. XmlDocument xmlDocument = new XmlDocument(); // Format using white spaces. xmlDocument.set_PreserveWhitespace(true); // Load the passed XML file into the document. xmlDocument.Load(name); // Create a new SignedXml object and pass it // the XML document class. SignedXml signedXml = new SignedXml(xmlDocument); // Find the "Signature" node and create a new // XmlNodeList object. XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature"); // Load the signature node. signedXml.LoadXml(((XmlElement)(nodeList.get_ItemOf(0)))); // Check the signature and return the result. return new Boolean(signedXml.CheckSignature()); } //VerifyXmlFile // Create example data to sign. public static void CreateSomeXml(String fileName) { // Create a new XmlDocument object. XmlDocument document = new XmlDocument(); // Create a new XmlNode object. XmlNode node = document.CreateNode(XmlNodeType.Element, "", "MyElement", "samples"); // Add some text to the node. node.set_InnerText("Example text to be signed."); // Append the node to the document. document.AppendChild(node); // Save the XML document to the file name specified. XmlTextWriter xmlTW = new XmlTextWriter(fileName, new UTF8Encoding(false)); document.WriteTo(xmlTW); xmlTW.Close(); } //CreateSomeXml } //SignVerifyEnvelope
KeyInfo オブジェクトを使用して XML ドキュメントを暗号化するコード例を次に示します。この例では、暗号化された XML ドキュメントに、暗号化済みのキーを埋め込みます。
Imports System Imports System.Xml Imports System.Security.Cryptography Imports System.Security.Cryptography.Xml Module Program Sub Main(ByVal args() As String) ' Create an XmlDocument object. Dim xmlDoc As New XmlDocument() ' Load an XML file into the XmlDocument object. Try xmlDoc.PreserveWhitespace = True xmlDoc.Load("test.xml") Catch e As Exception Console.WriteLine(e.Message) End Try ' Create a new RSA key. This key will encrypt a symmetric key , ' which will then be imbedded in the XML document. Dim rsaKey = New RSACryptoServiceProvider() Try ' Encrypt the "creditcard" element. Encrypt(xmlDoc, "creditcard", rsaKey, "rsaKey") ' Display the encrypted XML to the console. Console.WriteLine("Encrypted XML:") Console.WriteLine() Console.WriteLine(xmlDoc.OuterXml) ' Decrypt the "creditcard" element. Decrypt(xmlDoc, rsaKey, "rsaKey") ' Display the encrypted XML to the console. Console.WriteLine() Console.WriteLine("Decrypted XML:") Console.WriteLine() Console.WriteLine(xmlDoc.OuterXml) Catch e As Exception Console.WriteLine(e.Message) Finally ' Clear the RSA key. rsaKey.Clear() End Try End Sub Sub Encrypt(ByVal Doc As XmlDocument, ByVal ElementToEncrypt As String, ByVal Alg As RSA, ByVal KeyName As String) ' Check the arguments. If Doc Is Nothing Then Throw New ArgumentNullException("Doc") End If If ElementToEncrypt Is Nothing Then Throw New ArgumentNullException("ElementToEncrypt") End If If Alg Is Nothing Then Throw New ArgumentNullException("Alg") End If ''''''''''''''''''''''''''''''''''''''''''''''''''' ' Find the specified element in the XmlDocument ' object and create a new XmlElemnt object. ''''''''''''''''''''''''''''''''''''''''''''''''''' Dim elementEncrypt As XmlElement = Doc.GetElementsByTagName(ElementToEncrypt)(0) ' Throw an XmlException if the element was not found. If elementToEncrypt Is Nothing Then Throw New XmlException("The specified element was not found") End If ''''''''''''''''''''''''''''''''''''''''''''''''''' ' Create a new instance of the EncryptedXml class ' and use it to encrypt the XmlElement with the ' a new random symmetric key. ''''''''''''''''''''''''''''''''''''''''''''''''''' ' Create a 256 bit Rijndael key. Dim sessionKey As New RijndaelManaged() sessionKey.KeySize = 256 Dim eXml As New EncryptedXml() Dim encryptedElement As Byte() = eXml.EncryptData(elementEncrypt, sessionKey, False) ''''''''''''''''''''''''''''''''''''''''''''''''''' ' Construct an EncryptedData object and populate ' it with the desired encryption information. ''''''''''''''''''''''''''''''''''''''''''''''''''' Dim edElement As New EncryptedData() edElement.Type = EncryptedXml.XmlEncElementUrl ' Create an EncryptionMethod element so that the ' receiver knows which algorithm to use for decryption. edElement.EncryptionMethod = New EncryptionMethod(EncryptedXml.XmlEncAES256Url) ' Encrypt the session key and add it to an EncryptedKey element. Dim ek As New EncryptedKey() Dim encryptedKey As Byte() = EncryptedXml.EncryptKey(sessionKey.Key, Alg, False) ek.CipherData = New CipherData(encryptedKey) ek.EncryptionMethod = New EncryptionMethod(EncryptedXml.XmlEncRSA15Url) ' Set the KeyInfo element to specify the ' name of the RSA key. ' Create a new KeyInfo element. edElement.KeyInfo = New KeyInfo() ' Create a new KeyInfoName element. Dim kin As New KeyInfoName() ' Specify a name for the key. kin.Value = KeyName ' Add the KeyInfoName element to the ' EncryptedKey object. ek.KeyInfo.AddClause(kin) ' Add the encrypted key to the ' EncryptedData object. edElement.KeyInfo.AddClause(New KeyInfoEncryptedKey(ek)) ' Add the encrypted element data to the ' EncryptedData object. edElement.CipherData.CipherValue = encryptedElement ''''''''''''''''''''''''''''''''''''''''''''''''''' ' Replace the element from the original XmlDocument ' object with the EncryptedData element. ''''''''''''''''''''''''''''''''''''''''''''''''''' EncryptedXml.ReplaceElement(elementEncrypt, edElement, False) End Sub Sub Decrypt(ByVal Doc As XmlDocument, ByVal Alg As RSA, ByVal KeyName As String) ' Check the arguments. If Doc Is Nothing Then Throw New ArgumentNullException("Doc") End If If Alg Is Nothing Then Throw New ArgumentNullException("Alg") End If If KeyName Is Nothing Then Throw New ArgumentNullException("KeyName") End If ' Create a new EncryptedXml object. Dim exml As New EncryptedXml(Doc) ' Add a key-name mapping. ' This method can only decrypt documents ' that present the specified key name. exml.AddKeyNameMapping(KeyName, Alg) ' Decrypt the element. exml.DecryptDocument() End Sub End Module
using System; using System.Xml; using System.Security.Cryptography; using System.Security.Cryptography.Xml; class Program { static void Main(string[] args) { // Create an XmlDocument object. XmlDocument xmlDoc = new XmlDocument(); // Load an XML file into the XmlDocument object. try { xmlDoc.PreserveWhitespace = true; xmlDoc.Load("test.xml"); } catch (Exception e) { Console.WriteLine(e.Message); } // Create a new RSA key. This key will encrypt a symmetric key, // which will then be imbedded in the XML document. RSA rsaKey = new RSACryptoServiceProvider(); try { // Encrypt the "creditcard" element. Encrypt(xmlDoc, "creditcard", rsaKey, "rsaKey"); // Display the encrypted XML to the console. Console.WriteLine("Encrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.OuterXml); // Decrypt the "creditcard" element. Decrypt(xmlDoc, rsaKey, "rsaKey"); // Display the encrypted XML to the console. Console.WriteLine(); Console.WriteLine("Decrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.OuterXml); } catch (Exception e) { Console.WriteLine(e.Message); } finally { // Clear the RSA key. rsaKey.Clear(); } } public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, RSA Alg, string KeyName) { // Check the arguments. if (Doc == null) throw new ArgumentNullException("Doc"); if (ElementToEncrypt == null) throw new ArgumentNullException("ElementToEncrypt"); if (Alg == null) throw new ArgumentNullException("Alg"); //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement; // Throw an XmlException if the element was not found. if (elementToEncrypt == null) { throw new XmlException("The specified element was not found"); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // a new random symmetric key. ////////////////////////////////////////////////// // Create a 256 bit Rijndael key. RijndaelManaged sessionKey = new RijndaelManaged(); sessionKey.KeySize = 256; EncryptedXml eXml = new EncryptedXml(); byte[] encryptedElement = eXml.EncryptData(elementToEncrypt, sessionKey, false); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData edElement = new EncryptedData(); edElement.Type = EncryptedXml.XmlEncElementUrl; // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. edElement.EncryptionMethod = new EncryptionMethod(EncryptedXml.XmlEncAES256Url); // Encrypt the session key and add it to an EncryptedKey element. EncryptedKey ek = new EncryptedKey(); byte[] encryptedKey = EncryptedXml.EncryptKey(sessionKey.Key, Alg, false); ek.CipherData = new CipherData(encryptedKey); ek.EncryptionMethod = new EncryptionMethod(EncryptedXml.XmlEncRSA15Url); // Set the KeyInfo element to specify the // name of the RSA key. // Create a new KeyInfo element. edElement.KeyInfo = new KeyInfo(); // Create a new KeyInfoName element. KeyInfoName kin = new KeyInfoName(); // Specify a name for the key. kin.Value = KeyName; // Add the KeyInfoName element to the // EncryptedKey object. ek.KeyInfo.AddClause(kin); // Add the encrypted key to the // EncryptedData object. edElement.KeyInfo.AddClause(new KeyInfoEncryptedKey(ek)); // Add the encrypted element data to the // EncryptedData object. edElement.CipherData.CipherValue = encryptedElement; //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false); } public static void Decrypt(XmlDocument Doc, RSA Alg, string KeyName) { // Check the arguments. if (Doc == null) throw new ArgumentNullException("Doc"); if (Alg == null) throw new ArgumentNullException("Alg"); if (KeyName == null) throw new ArgumentNullException("KeyName"); // Create a new EncryptedXml object. EncryptedXml exml = new EncryptedXml(Doc); // Add a key-name mapping. // This method can only decrypt documents // that present the specified key name. exml.AddKeyNameMapping(KeyName, Alg); // Decrypt the element. exml.DecryptDocument(); } }
#using <System.Xml.dll> #using <System.Security.dll> #using <System.dll> using namespace System; using namespace System::Xml; using namespace System::Security::Cryptography; using namespace System::Security::Cryptography::Xml; static void Encrypt( XmlDocument^ Doc, String^ ElementToEncrypt, RSA^ Alg, String^ KeyName ) { // Check the arguments. if ( Doc == nullptr ) throw gcnew ArgumentNullException( L"Doc" ); if ( ElementToEncrypt == nullptr ) throw gcnew ArgumentNullException( L"ElementToEncrypt" ); if ( Alg == nullptr ) throw gcnew ArgumentNullException( L"Alg" ); //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement^ elementToEncrypt = dynamic_cast<XmlElement^>(Doc->GetElementsByTagName( ElementToEncrypt )->Item( 0 )); // Throw an XmlException if the element was not found. if ( elementToEncrypt == nullptr ) { throw gcnew XmlException( L"The specified element was not found" ); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // a new random symmetric key. ////////////////////////////////////////////////// // Create a 256 bit Rijndael key. RijndaelManaged^ sessionKey = gcnew RijndaelManaged; sessionKey->KeySize = 256; EncryptedXml^ eXml = gcnew EncryptedXml; array<Byte>^encryptedElement = eXml->EncryptData( elementToEncrypt, sessionKey, false ); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData^ edElement = gcnew EncryptedData; edElement->Type = EncryptedXml::XmlEncElementUrl; // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. edElement->EncryptionMethod = gcnew EncryptionMethod( EncryptedXml::XmlEncAES256Url ); // Encrypt the session key and add it to an EncryptedKey element. EncryptedKey^ ek = gcnew EncryptedKey; array<Byte>^encryptedKey = EncryptedXml::EncryptKey( sessionKey->Key, Alg, false ); ek->CipherData = gcnew CipherData( encryptedKey ); ek->EncryptionMethod = gcnew EncryptionMethod( EncryptedXml::XmlEncRSA15Url ); // Set the KeyInfo element to specify the // name of the RSA key. // Create a new KeyInfo element. edElement->KeyInfo = gcnew KeyInfo; // Create a new KeyInfoName element. KeyInfoName^ kin = gcnew KeyInfoName; // Specify a name for the key. kin->Value = KeyName; // Add the KeyInfoName element to the // EncryptedKey object. ek->KeyInfo->AddClause( kin ); // Add the encrypted key to the // EncryptedData object. edElement->KeyInfo->AddClause( gcnew KeyInfoEncryptedKey( ek ) ); // Add the encrypted element data to the // EncryptedData object. edElement->CipherData->CipherValue = encryptedElement; //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml::ReplaceElement( elementToEncrypt, edElement, false ); } static void Decrypt( XmlDocument^ Doc, RSA^ Alg, String^ KeyName ) { // Check the arguments. if ( Doc == nullptr ) throw gcnew ArgumentNullException( L"Doc" ); if ( Alg == nullptr ) throw gcnew ArgumentNullException( L"Alg" ); if ( KeyName == nullptr ) throw gcnew ArgumentNullException( L"KeyName" ); // Create a new EncryptedXml object. EncryptedXml^ exml = gcnew EncryptedXml( Doc ); // Add a key-name mapping. // This method can only decrypt documents // that present the specified key name. exml->AddKeyNameMapping( KeyName, Alg ); // Decrypt the element. exml->DecryptDocument(); } int main() { // Create an XmlDocument object. XmlDocument^ xmlDoc = gcnew XmlDocument; // Load an XML file into the XmlDocument object. try { xmlDoc->PreserveWhitespace = true; xmlDoc->Load( L"test.xml" ); } catch ( Exception^ e ) { Console::WriteLine( e->Message ); } // Create a new RSA key. This key will encrypt a symmetric key, // which will then be imbedded in the XML document. RSA^ rsaKey = gcnew RSACryptoServiceProvider; try { // Encrypt the "creditcard" element. Encrypt( xmlDoc, L"creditcard", rsaKey, L"rsaKey" ); // Display the encrypted XML to the console. Console::WriteLine( L"Encrypted XML:" ); Console::WriteLine(); Console::WriteLine( xmlDoc->OuterXml ); // Decrypt the "creditcard" element. Decrypt( xmlDoc, rsaKey, L"rsaKey" ); // Display the encrypted XML to the console. Console::WriteLine(); Console::WriteLine( L"Decrypted XML:" ); Console::WriteLine(); Console::WriteLine( xmlDoc->OuterXml ); } catch ( Exception^ e ) { Console::WriteLine( e->Message ); } finally { // Clear the RSA key. rsaKey->Clear(); } return 1; }
import System.*; import System.Xml.*; import System.Security.Cryptography.*; import System.Security.Cryptography.Xml.*; class Program { public static void main(String[] args) { // Create an XmlDocument object. XmlDocument xmlDoc = new XmlDocument(); // Load an XML file into the XmlDocument object. try { xmlDoc.set_PreserveWhitespace(true); xmlDoc.Load("test.xml"); } catch (System.Exception e) { Console.WriteLine(e.get_Message()); } // Create a new RSA key. This key will encrypt a symmetric key, // which will then be imbedded in the XML document. RSA rsaKey = new RSACryptoServiceProvider(); try { // Encrypt the "creditcard" element. Encrypt(xmlDoc, "creditcard", rsaKey, "rsaKey"); // Display the encrypted XML to the console. Console.WriteLine("Encrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.get_OuterXml()); // Decrypt the "creditcard" element. Decrypt(xmlDoc, rsaKey, "rsaKey"); // Display the encrypted XML to the console. Console.WriteLine(); Console.WriteLine("Decrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.get_OuterXml()); } catch (System.Exception e) { Console.WriteLine(e.get_Message()); } finally { // Clear the RSA key. rsaKey.Clear(); } } //main public static void Encrypt(XmlDocument doc, String elementToEncrypt, RSA alg, String keyName) throws ArgumentNullException,XmlException { // Check the arguments. if (doc == null) { throw new ArgumentNullException("doc"); } if (elementToEncrypt == null) { throw new ArgumentNullException("elementToEncrypt"); } if (alg == null) { throw new ArgumentNullException("alg"); } //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement elementToEncrypt1 = (XmlElement)doc.GetElementsByTagName( elementToEncrypt).get_ItemOf(0); // Throw an XmlException if the element was not found. if (elementToEncrypt1 == null) { throw new XmlException("The specified element was not found"); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // a new random symmetric key. ////////////////////////////////////////////////// // Create a 256 bit Rijndael key. RijndaelManaged sessionKey = new RijndaelManaged(); sessionKey.set_KeySize(256); EncryptedXml eXml = new EncryptedXml(); ubyte encryptedElement[] = eXml.EncryptData(elementToEncrypt1, sessionKey, false); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData edElement = new EncryptedData(); edElement.set_Type(EncryptedXml.XmlEncElementUrl); // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. edElement.set_EncryptionMethod(new EncryptionMethod( EncryptedXml.XmlEncAES256Url)); // Encrypt the session key and add it to an EncryptedKey element. EncryptedKey ek = new EncryptedKey(); ubyte encryptedKey[] = EncryptedXml.EncryptKey(sessionKey.get_Key(), alg, false); ek.set_CipherData(new CipherData(encryptedKey)); ek.set_EncryptionMethod(new EncryptionMethod(EncryptedXml. XmlEncRSA15Url)); // Set the KeyInfo element to specify the // name of the RSA key. // Create a new KeyInfo element. edElement.set_KeyInfo(new KeyInfo()); // Create a new KeyInfoName element. KeyInfoName kin = new KeyInfoName(); // Specify a name for the key. kin.set_Value(keyName); // Add the KeyInfoName element to the // EncryptedKey object. ek.get_KeyInfo().AddClause(kin); // Add the encrypted key to the // EncryptedData object. edElement.get_KeyInfo().AddClause(new KeyInfoEncryptedKey(ek)); // Add the encrypted element data to the // EncryptedData object. edElement.get_CipherData().set_CipherValue(encryptedElement); //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml.ReplaceElement(elementToEncrypt1, edElement, false); } //Encrypt public static void Decrypt(XmlDocument doc, RSA alg, String keyName) { // Check the arguments. if (doc == null) { throw new ArgumentNullException("doc"); } if (alg == null) { throw new ArgumentNullException("alg"); } if (keyName == null) { throw new ArgumentNullException("keyName"); } // Create a new EncryptedXml object. EncryptedXml eXml = new EncryptedXml(doc); // Add a key-name mapping. // This method can only decrypt documents // that present the specified key name. eXml.AddKeyNameMapping(keyName, alg); // Decrypt the element. eXml.DecryptDocument(); } //Decrypt } //Program
KeyInfo オブジェクトを使用して XML ドキュメントを暗号化するコード例を次に示します。この例では、名前を対称キーにマッピングして復号化メソッドを識別します。
Imports System Imports System.Xml Imports System.Security.Cryptography Imports System.Security.Cryptography.Xml Module Program Sub Main(ByVal args() As String) ' Create an XmlDocument object. Dim xmlDoc As New XmlDocument() ' Load an XML file into the XmlDocument object. Try xmlDoc.PreserveWhitespace = True xmlDoc.Load("test.xml") Catch e As Exception Console.WriteLine(e.Message) End Try ' Create a new TripleDES key. Dim tDESkey As New TripleDESCryptoServiceProvider() Try ' Encrypt the "creditcard" element. Encrypt(xmlDoc, "creditcard", tDESkey, "tDESKey") ' Display the encrypted XML to the console. Console.WriteLine("Encrypted XML:") Console.WriteLine() Console.WriteLine(xmlDoc.OuterXml) ' Decrypt the "creditcard" element. Decrypt(xmlDoc, tDESkey, "tDESKey") ' Display the encrypted XML to the console. Console.WriteLine() Console.WriteLine("Decrypted XML:") Console.WriteLine() Console.WriteLine(xmlDoc.OuterXml) Catch e As Exception Console.WriteLine(e.Message) Finally ' Clear the TripleDES key. tDESkey.Clear() End Try End Sub 'Main Sub Encrypt(ByVal Doc As XmlDocument, ByVal ElementToEncrypt As String, ByVal Alg As SymmetricAlgorithm, ByVal KeyName As String) ' Check the arguments. If Doc Is Nothing Then Throw New ArgumentNullException("Doc") End If If ElementToEncrypt Is Nothing Then Throw New ArgumentNullException("ElementToEncrypt") End If If Alg Is Nothing Then Throw New ArgumentNullException("Alg") End If ''''''''''''''''''''''''''''''''''''''''''''''''' ' Find the specified element in the XmlDocument ' object and create a new XmlElemnt object. ''''''''''''''''''''''''''''''''''''''''''''''''' Dim elementEncrypt As XmlElement = Doc.GetElementsByTagName(ElementToEncrypt)(0) ' Throw an XmlException if the element was not found. If elementToEncrypt Is Nothing Then Throw New XmlException("The specified element was not found") End If ''''''''''''''''''''''''''''''''''''''''''''''''' ' Create a new instance of the EncryptedXml class ' and use it to encrypt the XmlElement with the ' symmetric key. ''''''''''''''''''''''''''''''''''''''''''''''''' Dim eXml As New EncryptedXml() Dim encryptedElement As Byte() = eXml.EncryptData(elementEncrypt, Alg, False) ''''''''''''''''''''''''''''''''''''''''''''''''' ' Construct an EncryptedData object and populate ' it with the desired encryption information. ''''''''''''''''''''''''''''''''''''''''''''''''' Dim edElement As New EncryptedData() edElement.Type = EncryptedXml.XmlEncElementUrl ' Create an EncryptionMethod element so that the ' receiver knows which algorithm to use for decryption. ' Determine what kind of algorithm is being used and ' supply the appropriate URL to the EncryptionMethod element. Dim encryptionMethod As String = Nothing If TypeOf Alg Is TripleDES Then encryptionMethod = EncryptedXml.XmlEncTripleDESUrl ElseIf TypeOf Alg Is DES Then encryptionMethod = EncryptedXml.XmlEncDESUrl ElseIf TypeOf Alg Is Rijndael Then Select Case Alg.KeySize Case 128 encryptionMethod = EncryptedXml.XmlEncAES128Url Case 192 encryptionMethod = EncryptedXml.XmlEncAES192Url Case 256 encryptionMethod = EncryptedXml.XmlEncAES256Url End Select Else ' Throw an exception if the transform is not in the previous categories Throw New CryptographicException("The specified algorithm is not supported for XML Encryption.") End If edElement.EncryptionMethod = New EncryptionMethod(encryptionMethod) ' Set the KeyInfo element to specify the ' name of a key. ' Create a new KeyInfo element. edElement.KeyInfo = New KeyInfo() ' Create a new KeyInfoName element. Dim kin As New KeyInfoName() ' Specify a name for the key. kin.Value = KeyName ' Add the KeyInfoName element. edElement.KeyInfo.AddClause(kin) ' Add the encrypted element data to the ' EncryptedData object. edElement.CipherData.CipherValue = encryptedElement ''''''''''''''''''''''''''''''''''''''''''''''''' ' Replace the element from the original XmlDocument ' object with the EncryptedData element. ''''''''''''''''''''''''''''''''''''''''''''''''' EncryptedXml.ReplaceElement(elementEncrypt, edElement, False) End Sub Sub Decrypt(ByVal Doc As XmlDocument, ByVal Alg As SymmetricAlgorithm, ByVal KeyName As String) ' Check the arguments. If Doc Is Nothing Then Throw New ArgumentNullException("Doc") End If If Alg Is Nothing Then Throw New ArgumentNullException("Alg") End If If KeyName Is Nothing Then Throw New ArgumentNullException("KeyName") End If ' Create a new EncryptedXml object. Dim exml As New EncryptedXml(Doc) ' Add a key-name mapping. ' This method can only decrypt documents ' that present the specified key name. exml.AddKeyNameMapping(KeyName, Alg) ' Decrypt the element. exml.DecryptDocument() End Sub End Module
using System; using System.Xml; using System.Security.Cryptography; using System.Security.Cryptography.Xml; class Program { static void Main(string[] args) { // Create an XmlDocument object. XmlDocument xmlDoc = new XmlDocument(); // Load an XML file into the XmlDocument object. try { xmlDoc.PreserveWhitespace = true; xmlDoc.Load("test.xml"); } catch (Exception e) { Console.WriteLine(e.Message); } // Create a new TripleDES key. TripleDESCryptoServiceProvider tDESkey = new TripleDESCryptoServiceProvider(); try { // Encrypt the "creditcard" element. Encrypt(xmlDoc, "creditcard", tDESkey, "tDESKey"); // Display the encrypted XML to the console. Console.WriteLine("Encrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.OuterXml); // Decrypt the "creditcard" element. Decrypt(xmlDoc, tDESkey, "tDESKey"); // Display the encrypted XML to the console. Console.WriteLine(); Console.WriteLine("Decrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.OuterXml); } catch (Exception e) { Console.WriteLine(e.Message); } finally { // Clear the TripleDES key. tDESkey.Clear(); } } public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, SymmetricAlgorithm Alg, string KeyName) { // Check the arguments. if (Doc == null) throw new ArgumentNullException("Doc"); if (ElementToEncrypt == null) throw new ArgumentNullException("ElementToEncrypt"); if (Alg == null) throw new ArgumentNullException("Alg"); //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement; // Throw an XmlException if the element was not found. if (elementToEncrypt == null) { throw new XmlException("The specified element was not found"); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // symmetric key. ////////////////////////////////////////////////// EncryptedXml eXml = new EncryptedXml(); byte[] encryptedElement = eXml.EncryptData(elementToEncrypt, Alg, false); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData edElement = new EncryptedData(); edElement.Type = EncryptedXml.XmlEncElementUrl; // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. // Determine what kind of algorithm is being used and // supply the appropriate URL to the EncryptionMethod element. string encryptionMethod = null; if (Alg is TripleDES) { encryptionMethod = EncryptedXml.XmlEncTripleDESUrl; } else if (Alg is DES) { encryptionMethod = EncryptedXml.XmlEncDESUrl; } else if (Alg is Rijndael) { switch (Alg.KeySize) { case 128: encryptionMethod = EncryptedXml.XmlEncAES128Url; break; case 192: encryptionMethod = EncryptedXml.XmlEncAES192Url; break; case 256: encryptionMethod = EncryptedXml.XmlEncAES256Url; break; } } else { // Throw an exception if the transform is not in the previous categories throw new CryptographicException("The specified algorithm is not supported for XML Encryption."); } edElement.EncryptionMethod = new EncryptionMethod(encryptionMethod); // Set the KeyInfo element to specify the // name of a key. // Create a new KeyInfo element. edElement.KeyInfo = new KeyInfo(); // Create a new KeyInfoName element. KeyInfoName kin = new KeyInfoName(); // Specify a name for the key. kin.Value = KeyName; // Add the KeyInfoName element. edElement.KeyInfo.AddClause(kin); // Add the encrypted element data to the // EncryptedData object. edElement.CipherData.CipherValue = encryptedElement; //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false); } public static void Decrypt(XmlDocument Doc, SymmetricAlgorithm Alg, string KeyName) { // Check the arguments. if (Doc == null) throw new ArgumentNullException("Doc"); if (Alg == null) throw new ArgumentNullException("Alg"); if (KeyName == null) throw new ArgumentNullException("KeyName"); // Create a new EncryptedXml object. EncryptedXml exml = new EncryptedXml(Doc); // Add a key-name mapping. // This method can only decrypt documents // that present the specified key name. exml.AddKeyNameMapping(KeyName, Alg); // Decrypt the element. exml.DecryptDocument(); } }
#using <System.Security.dll> #using <System.dll> #using <System.Xml.dll> using namespace System; using namespace System::Xml; using namespace System::Security::Cryptography; using namespace System::Security::Cryptography::Xml; static void Encrypt( XmlDocument^ Doc, String^ ElementToEncrypt, SymmetricAlgorithm^ Alg, String^ KeyName ) { // Check the arguments. if ( Doc == nullptr ) throw gcnew ArgumentNullException( L"Doc" ); if ( ElementToEncrypt == nullptr ) throw gcnew ArgumentNullException( L"ElementToEncrypt" ); if ( Alg == nullptr ) throw gcnew ArgumentNullException( L"Alg" ); //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement^ elementToEncrypt = dynamic_cast<XmlElement^>(Doc->GetElementsByTagName( ElementToEncrypt )->Item( 0 )); // Throw an XmlException if the element was not found. if ( elementToEncrypt == nullptr ) { throw gcnew XmlException( L"The specified element was not found" ); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // symmetric key. ////////////////////////////////////////////////// EncryptedXml^ eXml = gcnew EncryptedXml; array<Byte>^encryptedElement = eXml->EncryptData( elementToEncrypt, Alg, false ); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData^ edElement = gcnew EncryptedData; edElement->Type = EncryptedXml::XmlEncElementUrl; // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. // Determine what kind of algorithm is being used and // supply the appropriate URL to the EncryptionMethod element. String^ encryptionMethod = nullptr; if ( dynamic_cast<TripleDES^>(Alg) ) { encryptionMethod = EncryptedXml::XmlEncTripleDESUrl; } else if ( dynamic_cast<DES^>(Alg) ) { encryptionMethod = EncryptedXml::XmlEncDESUrl; } else if ( dynamic_cast<Rijndael^>(Alg) ) { switch ( Alg->KeySize ) { case 128: encryptionMethod = EncryptedXml::XmlEncAES128Url; break; case 192: encryptionMethod = EncryptedXml::XmlEncAES192Url; break; case 256: encryptionMethod = EncryptedXml::XmlEncAES256Url; break; } } else { // Throw an exception if the transform is not in the previous categories throw gcnew CryptographicException( L"The specified algorithm is not supported for XML Encryption." ); } edElement->EncryptionMethod = gcnew EncryptionMethod( encryptionMethod ); // Set the KeyInfo element to specify the // name of a key. // Create a new KeyInfo element. edElement->KeyInfo = gcnew KeyInfo; // Create a new KeyInfoName element. KeyInfoName^ kin = gcnew KeyInfoName; // Specify a name for the key. kin->Value = KeyName; // Add the KeyInfoName element. edElement->KeyInfo->AddClause( kin ); // Add the encrypted element data to the // EncryptedData object. edElement->CipherData->CipherValue = encryptedElement; //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml::ReplaceElement( elementToEncrypt, edElement, false ); } static void Decrypt( XmlDocument^ Doc, SymmetricAlgorithm^ Alg, String^ KeyName ) { // Check the arguments. if ( Doc == nullptr ) throw gcnew ArgumentNullException( L"Doc" ); if ( Alg == nullptr ) throw gcnew ArgumentNullException( L"Alg" ); if ( KeyName == nullptr ) throw gcnew ArgumentNullException( L"KeyName" ); // Create a new EncryptedXml object. EncryptedXml^ exml = gcnew EncryptedXml( Doc ); // Add a key-name mapping. // This method can only decrypt documents // that present the specified key name. exml->AddKeyNameMapping( KeyName, Alg ); // Decrypt the element. exml->DecryptDocument(); } int main() { // Create an XmlDocument object. XmlDocument^ xmlDoc = gcnew XmlDocument; // Load an XML file into the XmlDocument object. try { xmlDoc->PreserveWhitespace = true; xmlDoc->Load( L"test.xml" ); } catch ( Exception^ e ) { Console::WriteLine( e->Message ); } // Create a new TripleDES key. TripleDESCryptoServiceProvider^ tDESkey = gcnew TripleDESCryptoServiceProvider; try { // Encrypt the "creditcard" element. Encrypt( xmlDoc, L"creditcard", tDESkey, L"tDESKey" ); // Display the encrypted XML to the console. Console::WriteLine( L"Encrypted XML:" ); Console::WriteLine(); Console::WriteLine( xmlDoc->OuterXml ); // Decrypt the "creditcard" element. Decrypt( xmlDoc, tDESkey, L"tDESKey" ); // Display the encrypted XML to the console. Console::WriteLine(); Console::WriteLine( L"Decrypted XML:" ); Console::WriteLine(); Console::WriteLine( xmlDoc->OuterXml ); } catch ( Exception^ e ) { Console::WriteLine( e->Message ); } finally { // Clear the TripleDES key. tDESkey->Clear(); } return 1; }
import System.*; import System.Xml.*; import System.Security.Cryptography.*; import System.Security.Cryptography.Xml.*; class Program { public static void main(String[] args) { // Create an XmlDocument object. XmlDocument xmlDoc = new XmlDocument(); // Load an XML file into the XmlDocument object. try { xmlDoc.set_PreserveWhitespace(true); xmlDoc.Load("test.xml"); } catch (System.Exception e) { Console.WriteLine(e.get_Message()); } // Create a new TripleDES key. TripleDESCryptoServiceProvider tDESkey = new TripleDESCryptoServiceProvider(); try { // Encrypt the "creditcard" element. Encrypt(xmlDoc, "creditcard", tDESkey, "tDESKey"); // Display the encrypted XML to the console. Console.WriteLine("Encrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.get_OuterXml()); // Decrypt the "creditcard" element. Decrypt(xmlDoc, tDESkey, "tDESKey"); // Display the encrypted XML to the console. Console.WriteLine(); Console.WriteLine("Decrypted XML:"); Console.WriteLine(); Console.WriteLine(xmlDoc.get_OuterXml()); } catch (System.Exception e) { Console.WriteLine(e.get_Message()); } finally { // Clear the TripleDES key. tDESkey.Clear(); } } //main public static void Encrypt(XmlDocument doc, String elementToEncrypt, SymmetricAlgorithm alg, String keyName) throws XmlException, CryptographicException { // Check the arguments. if (doc == null) { throw new ArgumentNullException("doc"); } if (elementToEncrypt == null) { throw new ArgumentNullException("elementToEncrypt"); } if (alg == null) { throw new ArgumentNullException("alg"); } //////////////////////////////////////////////// // Find the specified element in the XmlDocument // object and create a new XmlElemnt object. //////////////////////////////////////////////// XmlElement elementToEncrypt1 = (XmlElement)doc.GetElementsByTagName( elementToEncrypt).get_ItemOf(0); // Throw an XmlException if the element was not found. if (elementToEncrypt1 == null) { throw new XmlException("The specified element was not found"); } ////////////////////////////////////////////////// // Create a new instance of the EncryptedXml class // and use it to encrypt the XmlElement with the // symmetric key. ////////////////////////////////////////////////// EncryptedXml eXml = new EncryptedXml(); ubyte encryptedElement[] = eXml.EncryptData(elementToEncrypt1, alg, false); //////////////////////////////////////////////// // Construct an EncryptedData object and populate // it with the desired encryption information. //////////////////////////////////////////////// EncryptedData edElement = new EncryptedData(); edElement.set_Type(EncryptedXml.XmlEncElementUrl); // Create an EncryptionMethod element so that the // receiver knows which algorithm to use for decryption. // Determine what kind of algorithm is being used and // supply the appropriate URL to the EncryptionMethod element. String encryptionMethod = null; if (alg instanceof TripleDES) { encryptionMethod = EncryptedXml.XmlEncTripleDESUrl; } else { if (alg instanceof DES) { encryptionMethod = EncryptedXml.XmlEncDESUrl; } else { if (alg instanceof Rijndael) { switch (alg.get_KeySize()) { case 128: encryptionMethod = EncryptedXml.XmlEncAES128Url; break; case 192: encryptionMethod = EncryptedXml.XmlEncAES192Url; break; case 256: encryptionMethod = EncryptedXml.XmlEncAES256Url; break; } } else { // Throw an exception if the transform is not in the // previous categories throw new CryptographicException("The specified algorithm" +" is not supported for XML Encryption."); } } } edElement.set_EncryptionMethod(new EncryptionMethod(encryptionMethod)); // Set the KeyInfo element to specify the // name of a key. // Create a new KeyInfo element. edElement.set_KeyInfo(new KeyInfo()); // Create a new KeyInfoName element. KeyInfoName kin = new KeyInfoName(); // Specify a name for the key. kin.set_Value(keyName); // Add the KeyInfoName element. edElement.get_KeyInfo().AddClause(kin); // Add the encrypted element data to the // EncryptedData object. edElement.get_CipherData().set_CipherValue(encryptedElement); //////////////////////////////////////////////////// // Replace the element from the original XmlDocument // object with the EncryptedData element. //////////////////////////////////////////////////// EncryptedXml.ReplaceElement(elementToEncrypt1, edElement, false); } //Encrypt public static void Decrypt(XmlDocument doc, SymmetricAlgorithm alg, String keyName) { // Check the arguments. if (doc == null) { throw new ArgumentNullException("doc"); } if (alg == null) { throw new ArgumentNullException("alg"); } if (keyName == null) { throw new ArgumentNullException("keyName"); } // Create a new EncryptedXml object. EncryptedXml eXml = new EncryptedXml(doc); // Add a key-name mapping. // This method can only decrypt documents // that present the specified key name. eXml.AddKeyNameMapping(keyName, alg); // Decrypt the element. eXml.DecryptDocument(); } //Decrypt } //Program
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