SignatureDescription クラス
アセンブリ: mscorlib (mscorlib.dll 内)


SignatureDescription クラスのメンバを使用する方法を次のコード例に示します。
Imports System Imports System.Security Imports System.Security.Cryptography Public Class Form1 Inherits System.Windows.Forms.Form ' Event handler for Run button. Private Sub Button1_Click( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles Button1.Click tbxOutput.Cursor = Cursors.WaitCursor tbxOutput.Text = "" ' Create a digital signature based on RSA encryption. Dim rsaSignature As SignatureDescription = CreateRSAPKCS1Signature() ShowProperties(rsaSignature) ' Create a digital signature based on DSA encryption. Dim dsaSignature As SignatureDescription = CreateDSASignature() ShowProperties(dsaSignature) ' Create a HashAlgorithm using the digest algorithm of the signature. Dim hashAlgorithm As HashAlgorithm = dsaSignature.CreateDigest() WriteLine("Hash algorithm for the DigestAlgorithm property: " + _ hashAlgorithm.ToString()) ' Create an AsymmetricSignatureFormatter instance using the DSA key. Dim dsa As DSA = dsa.Create() Dim asymmetricFormatter As AsymmetricSignatureFormatter = _ CreateDSAFormatter(dsa) ' Create an AsymmetricSignatureDeformatter instance using the DSA key. dim asymmetricDeformatter as AsymmetricSignatureDeformatter = _ CreateDSADeformatter(dsa) ' Align interface and conclude application. WriteLine("This sample completed successfully;" + _ " press Exit to continue.") ' Reset the cursor to the default look. tbxOutput.Cursor = Cursors.Default End Sub ' Create a SignatureDescription for RSA encryption. Private Function CreateRSAPKCS1Signature() As SignatureDescription Dim signatureDescription As New SignatureDescription ' Set the key algorithm property for RSA encryption. signatureDescription.KeyAlgorithm = _ "System.Security.Cryptography.RSACryptoServiceProvider" ' Set the digest algorithm for RSA encryption using the SHA1 provider. signatureDescription.DigestAlgorithm = _ "System.Security.Cryptography.SHA1CryptoServiceProvider" ' Set the formatter algorithm with the RSAPKCS1 formatter. signatureDescription.FormatterAlgorithm = _ "System.Security.Cryptography.RSAPKCS1SignatureFormatter" ' Set the formatter algorithm with the RSAPKCS1 deformatter. signatureDescription.DeformatterAlgorithm = _ "System.Security.Cryptography.RSAPKCS1SignatureDeformatter" Return SignatureDescription End Function ' Create a SignatureDescription using a constructed SecurityElement for ' DSA encryption. Private Function CreateDSASignature() As SignatureDescription Dim securityElement As New SecurityElement("DSASignature") ' Create new security elements for the four algorithms. securityElement.AddChild(new SecurityElement( _ "Key", _ "System.Security.Cryptography.DSACryptoServiceProvider")) securityElement.AddChild(New SecurityElement( _ "Digest", _ "System.Security.Cryptography.SHA1CryptoServiceProvider")) securityElement.AddChild(new SecurityElement( _ "Formatter", _ "System.Security.Cryptography.DSASignatureFormatter")) securityElement.AddChild(new SecurityElement( _ "Deformatter", _ "System.Security.Cryptography.DSASignatureDeformatter")) Dim signatureDescription As New SignatureDescription(securityElement) Return signatureDescription End Function ' Create a signature formatter for DSA encryption. Private Function CreateDSAFormatter(ByVal dsa As DSA) _ As AsymmetricSignatureFormatter ' Create a DSA signature formatter for encryption. Dim signatureDescription As New SignatureDescription signatureDescription.FormatterAlgorithm = _ "System.Security.Cryptography.DSASignatureFormatter" Dim asymmetricFormatter As AsymmetricSignatureFormatter asymmetricFormatter = signatureDescription.CreateFormatter(dsa) WriteLine("Created formatter : " + asymmetricFormatter.ToString()) Return asymmetricFormatter End Function ' Create a signature deformatter for DSA decryption. Private Function CreateDSADeformatter(ByVal dsa As DSA) _ As AsymmetricSignatureDeformatter ' Create a DSA signature deformatter to verify the signature. Dim signatureDescription As New SignatureDescription signatureDescription.DeformatterAlgorithm = _ "System.Security.Cryptography.DSASignatureDeformatter" Dim asymmetricDeformatter As AsymmetricSignatureDeformatter asymmetricDeformatter = SignatureDescription.CreateDeformatter(dsa) WriteLine("Created deformatter : " + asymmetricDeformatter.ToString()) Return asymmetricDeformatter End Function ' Display to the console the properties of the specified ' SignatureDescription. Private Sub ShowProperties(ByVal signatureDescription _ As SignatureDescription) ' Retrieve the class path for the specified SignatureDescription. Dim classDescription As String = signatureDescription.ToString() Dim deformatterAlgorithm As String deformatterAlgorithm = signatureDescription.DeformatterAlgorithm Dim formatterAlgorithm As String formatterAlgorithm = signatureDescription.FormatterAlgorithm Dim digestAlgorithm As String digestAlgorithm = signatureDescription.DigestAlgorithm Dim keyAlgorithm As String keyAlgorithm = signatureDescription.KeyAlgorithm WriteLine(vbCrLf + "** " + classDescription + " **") WriteLine("DeformatterAlgorithm : " + deformatterAlgorithm) WriteLine("FormatterAlgorithm : " + formatterAlgorithm) WriteLine("DigestAlgorithm : " + digestAlgorithm) WriteLine("KeyAlgorithm : " + keyAlgorithm) End Sub ' Write the specified message and carriage return to the output textbox. Private Sub WriteLine(ByVal message As String) tbxOutput.AppendText(message + vbCrLf) End Sub ' Event handler for Exit button. Private Sub Button2_Click( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles Button2.Click Application.Exit() End Sub #Region " Windows Form Designer generated code " Public Sub New() MyBase.New() 'This call is required by the Windows Form Designer. InitializeComponent() 'Add any initialization after the InitializeComponent() call End Sub 'Form overrides dispose to clean up the component list. Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub 'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer 'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor. Friend WithEvents Panel2 As System.Windows.Forms.Panel Friend WithEvents Panel1 As System.Windows.Forms.Panel Friend WithEvents Button1 As System.Windows.Forms.Button Friend WithEvents Button2 As System.Windows.Forms.Button Friend WithEvents tbxOutput As System.Windows.Forms.RichTextBox <System.Diagnostics.DebuggerStepThrough()> _ Private Sub InitializeComponent() Me.Panel2 = New System.Windows.Forms.Panel Me.Button1 = New System.Windows.Forms.Button Me.Button2 = New System.Windows.Forms.Button Me.Panel1 = New System.Windows.Forms.Panel Me.tbxOutput = New System.Windows.Forms.RichTextBox Me.Panel2.SuspendLayout() Me.Panel1.SuspendLayout() Me.SuspendLayout() ' 'Panel2 ' Me.Panel2.Controls.Add(Me.Button1) Me.Panel2.Controls.Add(Me.Button2) Me.Panel2.Dock = System.Windows.Forms.DockStyle.Bottom Me.Panel2.DockPadding.All = 20 Me.Panel2.Location = New System.Drawing.Point(0, 320) Me.Panel2.Name = "Panel2" Me.Panel2.Size = New System.Drawing.Size(616, 64) Me.Panel2.TabIndex = 1 ' 'Button1 ' Me.Button1.Dock = System.Windows.Forms.DockStyle.Right Me.Button1.Font = New System.Drawing.Font("Microsoft Sans Serif", _ 9.0!, _ System.Drawing.FontStyle.Regular, _ System.Drawing.GraphicsUnit.Point, _ CType(0, Byte)) Me.Button1.Location = New System.Drawing.Point(446, 20) Me.Button1.Name = "Button1" Me.Button1.Size = New System.Drawing.Size(75, 24) Me.Button1.TabIndex = 2 Me.Button1.Text = "&Run" ' 'Button2 ' Me.Button2.Dock = System.Windows.Forms.DockStyle.Right Me.Button2.Font = New System.Drawing.Font( _ "Microsoft Sans Serif", _ 9.0!, _ System.Drawing.FontStyle.Regular, _ System.Drawing.GraphicsUnit.Point, _ CType(0, Byte)) Me.Button2.Location = New System.Drawing.Point(521, 20) Me.Button2.Name = "Button2" Me.Button2.Size = New System.Drawing.Size(75, 24) Me.Button2.TabIndex = 3 Me.Button2.Text = "E&xit" ' 'Panel1 ' Me.Panel1.Controls.Add(Me.tbxOutput) Me.Panel1.Dock = System.Windows.Forms.DockStyle.Fill Me.Panel1.DockPadding.All = 20 Me.Panel1.Location = New System.Drawing.Point(0, 0) Me.Panel1.Name = "Panel1" Me.Panel1.Size = New System.Drawing.Size(616, 320) Me.Panel1.TabIndex = 2 ' 'tbxOutput ' Me.tbxOutput.AccessibleDescription = _ "Displays output from application." Me.tbxOutput.AccessibleName = "Output textbox." Me.tbxOutput.Dock = System.Windows.Forms.DockStyle.Fill Me.tbxOutput.Location = New System.Drawing.Point(20, 20) Me.tbxOutput.Name = "tbxOutput" Me.tbxOutput.Size = New System.Drawing.Size(576, 280) Me.tbxOutput.TabIndex = 1 Me.tbxOutput.Text = "Click the Run button to run the application." ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15) Me.ClientSize = New System.Drawing.Size(616, 384) Me.Controls.Add(Me.Panel1) Me.Controls.Add(Me.Panel2) Me.Name = "Form1" Me.Text = "SignatureDescription" Me.Panel2.ResumeLayout(False) Me.Panel1.ResumeLayout(False) Me.ResumeLayout(False) End Sub #End Region End Class ' ' This sample produces the following output: ' ' ' ** System.Security.Cryptography.SignatureDescription ** ' DeformatterAlgorithm : System.Security.Cryptography. ' RSAPKCS1SignatureDeformatter ' FormatterAlgorithm : System.Security.Cryptography.RSAPKCS1SignatureFormatter ' DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider ' KeyAlgorithm : System.Security.Cryptography.RSACryptoServiceProvider ' ' ** System.Security.Cryptography.SignatureDescription ** ' DeformatterAlgorithm : System.Security.Cryptography.DSASignatureDeformatter ' FormatterAlgorithm : System.Security.Cryptography.DSASignatureFormatter ' DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider ' KeyAlgorithm : System.Security.Cryptography.DSACryptoServiceProvider ' Hash algorithm for the DigestAlgorithm property: System.Security. ' Cryptography. ' SHA1CryptoServiceProvider ' Created formatter : System.Security.Cryptography.DSASignatureFormatter ' Created deformatter : System.Security.Cryptography.DSASignatureDeformatter ' This sample completed successfully; press Exit to continue.
using System; using System.Security; using System.Security.Cryptography; class SignatureDescriptionImpl { [STAThread] static void Main(string[] args) { // Create a digital signature based on RSA encryption. SignatureDescription rsaSignature = CreateRSAPKCS1Signature(); ShowProperties(rsaSignature); // Create a digital signature based on DSA encryption. SignatureDescription dsaSignature = CreateDSASignature(); ShowProperties(dsaSignature); // Create a HashAlgorithm using the digest algorithm of the signature. HashAlgorithm hashAlgorithm = dsaSignature.CreateDigest(); Console.WriteLine("\nHash algorithm for the DigestAlgorithm property:" + " " + hashAlgorithm.ToString()); // Create an AsymmetricSignatureFormatter instance using the DSA key. DSA dsa = DSA.Create(); AsymmetricSignatureFormatter asymmetricFormatter = CreateDSAFormatter(dsa); // Create an AsymmetricSignatureDeformatter instance using the // DSA key. AsymmetricSignatureDeformatter asymmetricDeformatter = CreateDSADeformatter(dsa); Console.WriteLine("This sample completed successfully; " + "press Enter to exit."); Console.ReadLine(); } // Create a SignatureDescription for RSA encryption. private static SignatureDescription CreateRSAPKCS1Signature() { SignatureDescription signatureDescription = new SignatureDescription(); // Set the key algorithm property for RSA encryption. signatureDescription.KeyAlgorithm = "System.Security.Cryptography.RSACryptoServiceProvider"; // Set the digest algorithm for RSA encryption using the // SHA1 provider. signatureDescription.DigestAlgorithm = "System.Security.Cryptography.SHA1CryptoServiceProvider"; // Set the formatter algorithm with the RSAPKCS1 formatter. signatureDescription.FormatterAlgorithm = "System.Security.Cryptography.RSAPKCS1SignatureFormatter"; // Set the formatter algorithm with the RSAPKCS1 deformatter. signatureDescription.DeformatterAlgorithm = "System.Security.Cryptography.RSAPKCS1SignatureDeformatter"; return signatureDescription; } // Create a SignatureDescription using a constructed SecurityElement for // DSA encryption. private static SignatureDescription CreateDSASignature() { SecurityElement securityElement = new SecurityElement("DSASignature"); // Create new security elements for the four algorithms. securityElement.AddChild(new SecurityElement( "Key", "System.Security.Cryptography.DSACryptoServiceProvider")); securityElement.AddChild(new SecurityElement( "Digest", "System.Security.Cryptography.SHA1CryptoServiceProvider")); securityElement.AddChild(new SecurityElement( "Formatter", "System.Security.Cryptography.DSASignatureFormatter")); securityElement.AddChild(new SecurityElement( "Deformatter", "System.Security.Cryptography.DSASignatureDeformatter")); SignatureDescription signatureDescription = new SignatureDescription(securityElement); return signatureDescription; } // Create a signature formatter for DSA encryption. private static AsymmetricSignatureFormatter CreateDSAFormatter(DSA dsa) { // Create a DSA signature formatter for encryption. SignatureDescription signatureDescription = new SignatureDescription(); signatureDescription.FormatterAlgorithm = "System.Security.Cryptography.DSASignatureFormatter"; AsymmetricSignatureFormatter asymmetricFormatter = signatureDescription.CreateFormatter(dsa); Console.WriteLine("\nCreated formatter : " + asymmetricFormatter.ToString()); return asymmetricFormatter; } // Create a signature deformatter for DSA decryption. private static AsymmetricSignatureDeformatter CreateDSADeformatter( DSA dsa) { // Create a DSA signature deformatter to verify the signature. SignatureDescription signatureDescription = new SignatureDescription(); signatureDescription.DeformatterAlgorithm = "System.Security.Cryptography.DSASignatureDeformatter"; AsymmetricSignatureDeformatter asymmetricDeformatter = signatureDescription.CreateDeformatter(dsa); Console.WriteLine("\nCreated deformatter : " + asymmetricDeformatter.ToString()); return asymmetricDeformatter; } // Display to the console the properties of the specified // SignatureDescription. private static void ShowProperties( SignatureDescription signatureDescription) { // Retrieve the class path for the specified SignatureDescription. string classDescription = signatureDescription.ToString(); string deformatterAlgorithm = signatureDescription.DeformatterAlgorithm; string formatterAlgorithm = signatureDescription.FormatterAlgorithm; string digestAlgorithm = signatureDescription.DigestAlgorithm; string keyAlgorithm = signatureDescription.KeyAlgorithm; Console.WriteLine("\n** " + classDescription + " **"); Console.WriteLine("DeformatterAlgorithm : " + deformatterAlgorithm); Console.WriteLine("FormatterAlgorithm : " + formatterAlgorithm); Console.WriteLine("DigestAlgorithm : " + digestAlgorithm); Console.WriteLine("KeyAlgorithm : " + keyAlgorithm); } } // // This sample produces the following output: // // ** System.Security.Cryptography.SignatureDescription ** // DeformatterAlgorithm : System.Security.Cryptography. // RSAPKCS1SignatureDeformatter // // FormatterAlgorithm : System.Security.Cryptography. // RSAPKCS1SignatureFormatter // DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider // KeyAlgorithm : System.Security.Cryptography.RSACryptoServiceProvider // // ** System.Security.Cryptography.SignatureDescription ** // DeformatterAlgorithm : System.Security.Cryptography.DSASignatureDeformatter // FormatterAlgorithm : System.Security.Cryptography.DSASignatureFormatter // DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider // KeyAlgorithm : System.Security.Cryptography.DSACryptoServiceProvider // // Hash algorithm for the DigestAlgorithm property: // System.Security.Cryptography.SH // A1CryptoServiceProvider // // Created formatter : System.Security.Cryptography.DSASignatureFormatter // // Created deformatter : System.Security.Cryptography.DSASignatureDeformatter // This sample completed successfully; press Enter to exit.
using namespace System; using namespace System::Security; using namespace System::Security::Cryptography; ref class SignatureDescriptionImpl { public: [STAThread] static void Main() { // Create a digital signature based on RSA encryption. SignatureDescription^ rsaSignature = CreateRSAPKCS1Signature(); ShowProperties( rsaSignature ); // Create a digital signature based on DSA encryption. SignatureDescription^ dsaSignature = CreateDSASignature(); ShowProperties( dsaSignature ); // Create a HashAlgorithm using the digest algorithm of the signature. HashAlgorithm^ hashAlgorithm = dsaSignature->CreateDigest(); Console::WriteLine( L"\nHash algorithm for the DigestAlgorithm property:" L" {0}", hashAlgorithm ); // Create an AsymmetricSignatureFormatter instance using the DSA key. DSA^ dsa = DSA::Create(); AsymmetricSignatureFormatter^ asymmetricFormatter = CreateDSAFormatter( dsa ); // Create an AsymmetricSignatureDeformatter instance using the // DSA key. AsymmetricSignatureDeformatter^ asymmetricDeformatter = CreateDSADeformatter( dsa ); Console::WriteLine( L"This sample completed successfully; " L"press Enter to exit." ); Console::ReadLine(); } private: // Create a SignatureDescription for RSA encryption. static SignatureDescription^ CreateRSAPKCS1Signature() { SignatureDescription^ signatureDescription = gcnew SignatureDescription; // Set the key algorithm property for RSA encryption. signatureDescription->KeyAlgorithm = L"System.Security.Cryptography.RSACryptoServiceProvider"; // Set the digest algorithm for RSA encryption using the // SHA1 provider. signatureDescription->DigestAlgorithm = L"System.Security.Cryptography.SHA1CryptoServiceProvider"; // Set the formatter algorithm with the RSAPKCS1 formatter. signatureDescription->FormatterAlgorithm = L"System.Security.Cryptography.RSAPKCS1SignatureFormatter"; // Set the formatter algorithm with the RSAPKCS1 deformatter. signatureDescription->DeformatterAlgorithm = L"System.Security.Cryptography.RSAPKCS1SignatureDeformatter"; return signatureDescription; } // Create a SignatureDescription using a constructed SecurityElement for // DSA encryption. static SignatureDescription^ CreateDSASignature() { SecurityElement^ securityElement = gcnew SecurityElement( L"DSASignature" ); // Create new security elements for the four algorithms. securityElement->AddChild( gcnew SecurityElement( L"Key",L"System.Security.Cryptography.DSACryptoServiceProvider" ) ); securityElement->AddChild( gcnew SecurityElement( L"Digest",L"System.Security.Cryptography.SHA1CryptoServiceProvider" ) ); securityElement->AddChild( gcnew SecurityElement( L"Formatter",L"System.Security.Cryptography.DSASignatureFormatter" ) ); securityElement->AddChild( gcnew SecurityElement( L"Deformatter",L"System.Security.Cryptography.DSASignatureDeformatter" ) ); SignatureDescription^ signatureDescription = gcnew SignatureDescription( securityElement ); return signatureDescription; } // Create a signature formatter for DSA encryption. static AsymmetricSignatureFormatter^ CreateDSAFormatter( DSA^ dsa ) { // Create a DSA signature formatter for encryption. SignatureDescription^ signatureDescription = gcnew SignatureDescription; signatureDescription->FormatterAlgorithm = L"System.Security.Cryptography.DSASignatureFormatter"; AsymmetricSignatureFormatter^ asymmetricFormatter = signatureDescription->CreateFormatter( dsa ); Console::WriteLine( L"\nCreated formatter : {0}", asymmetricFormatter ); return asymmetricFormatter; } // Create a signature deformatter for DSA decryption. static AsymmetricSignatureDeformatter^ CreateDSADeformatter( DSA^ dsa ) { // Create a DSA signature deformatter to verify the signature. SignatureDescription^ signatureDescription = gcnew SignatureDescription; signatureDescription->DeformatterAlgorithm = L"System.Security.Cryptography.DSASignatureDeformatter"; AsymmetricSignatureDeformatter^ asymmetricDeformatter = signatureDescription->CreateDeformatter( dsa ); Console::WriteLine( L"\nCreated deformatter : {0}", asymmetricDeformatter ); return asymmetricDeformatter; } // Display to the console the properties of the specified // SignatureDescription. static void ShowProperties( SignatureDescription^ signatureDescription ) { // Retrieve the class path for the specified SignatureDescription. String^ classDescription = signatureDescription->ToString(); String^ deformatterAlgorithm = signatureDescription->DeformatterAlgorithm; String^ formatterAlgorithm = signatureDescription->FormatterAlgorithm; String^ digestAlgorithm = signatureDescription->DigestAlgorithm; String^ keyAlgorithm = signatureDescription->KeyAlgorithm; Console::WriteLine( L"\n** {0} **", classDescription ); Console::WriteLine( L"DeformatterAlgorithm : {0}", deformatterAlgorithm ); Console::WriteLine( L"FormatterAlgorithm : {0}", formatterAlgorithm ); Console::WriteLine( L"DigestAlgorithm : {0}", digestAlgorithm ); Console::WriteLine( L"KeyAlgorithm : {0}", keyAlgorithm ); } }; int main() { SignatureDescriptionImpl::Main(); } // // This sample produces the following output: // // ** System.Security.Cryptography.SignatureDescription ** // DeformatterAlgorithm : System.Security.Cryptography. // RSAPKCS1SignatureDeformatter // // FormatterAlgorithm : System.Security.Cryptography. // RSAPKCS1SignatureFormatter // DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider // KeyAlgorithm : System.Security.Cryptography.RSACryptoServiceProvider // // ** System.Security.Cryptography.SignatureDescription ** // DeformatterAlgorithm : System.Security.Cryptography.DSASignatureDeformatter // FormatterAlgorithm : System.Security.Cryptography.DSASignatureFormatter // DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider // KeyAlgorithm : System.Security.Cryptography.DSACryptoServiceProvider // // Hash algorithm for the DigestAlgorithm property: // System.Security.Cryptography.SH // A1CryptoServiceProvider // // Created formatter : System.Security.Cryptography.DSASignatureFormatter // // Created deformatter : System.Security.Cryptography.DSASignatureDeformatter // This sample completed successfully; press Enter to exit.
import System.*; import System.Security.*; import System.Security.Cryptography.*; class SignatureDescriptionImpl { /** @attribute STAThread() */ public static void main(String[] args) { // Create a digital signature based on RSA encryption. SignatureDescription rsaSignature = CreateRSAPKCS1Signature(); ShowProperties(rsaSignature); // Create a digital signature based on DSA encryption. SignatureDescription dsaSignature = CreateDSASignature(); ShowProperties(dsaSignature); // Create a HashAlgorithm using the digest algorithm of the signature. HashAlgorithm hashAlgorithm = dsaSignature.CreateDigest(); Console.WriteLine("\nHash algorithm for the DigestAlgorithm property:" + " " + hashAlgorithm.ToString()); // Create an AsymmetricSignatureFormatter instance using the DSA key. DSA dsa = DSA.Create(); AsymmetricSignatureFormatter asymmetricFormatter = CreateDSAFormatter(dsa); // Create an AsymmetricSignatureDeformatter instance using the // DSA key. AsymmetricSignatureDeformatter asymmetricDeformatter = CreateDSADeformatter(dsa); Console.WriteLine("This sample completed successfully; " + "press Enter to exit."); Console.ReadLine(); } //main // Create a SignatureDescription for RSA encryption. private static SignatureDescription CreateRSAPKCS1Signature() { SignatureDescription signatureDescription = new SignatureDescription(); // Set the key algorithm property for RSA encryption. signatureDescription.set_KeyAlgorithm( "System.Security.Cryptography.RSACryptoServiceProvider"); // Set the digest algorithm for RSA encryption using the // SHA1 provider. signatureDescription.set_DigestAlgorithm( "System.Security.Cryptography.SHA1CryptoServiceProvider"); // Set the formatter algorithm with the RSAPKCS1 formatter. signatureDescription.set_FormatterAlgorithm( "System.Security.Cryptography.RSAPKCS1SignatureFormatter"); // Set the formatter algorithm with the RSAPKCS1 deformatter. signatureDescription.set_DeformatterAlgorithm ("System.Security.Cryptography.RSAPKCS1SignatureDeformatter"); return signatureDescription; } //CreateRSAPKCS1Signature // Create a SignatureDescription using a constructed SecurityElement for // DSA encryption. private static SignatureDescription CreateDSASignature() { SecurityElement securityElement = new SecurityElement("DSASignature"); // Create new security elements for the four algorithms. securityElement.AddChild(new SecurityElement("Key", "System.Security.Cryptography.DSACryptoServiceProvider")); securityElement.AddChild(new SecurityElement("Digest", "System.Security.Cryptography.SHA1CryptoServiceProvider")); securityElement.AddChild(new SecurityElement("Formatter", "System.Security.Cryptography.DSASignatureFormatter")); securityElement.AddChild(new SecurityElement("Deformatter", "System.Security.Cryptography.DSASignatureDeformatter")); SignatureDescription signatureDescription = new SignatureDescription(securityElement); return signatureDescription; } //CreateDSASignature // Create a signature formatter for DSA encryption. private static AsymmetricSignatureFormatter CreateDSAFormatter(DSA dsa) { // Create a DSA signature formatter for encryption. SignatureDescription signatureDescription = new SignatureDescription(); signatureDescription.set_FormatterAlgorithm( "System.Security.Cryptography.DSASignatureFormatter"); AsymmetricSignatureFormatter asymmetricFormatter = signatureDescription.CreateFormatter(dsa); Console.WriteLine("\nCreated formatter : " + asymmetricFormatter.ToString()); return asymmetricFormatter; } //CreateDSAFormatter // Create a signature deformatter for DSA decryption. private static AsymmetricSignatureDeformatter CreateDSADeformatter(DSA dsa) { // Create a DSA signature deformatter to verify the signature. SignatureDescription signatureDescription = new SignatureDescription(); signatureDescription.set_DeformatterAlgorithm( "System.Security.Cryptography.DSASignatureDeformatter"); AsymmetricSignatureDeformatter asymmetricDeformatter = signatureDescription.CreateDeformatter(dsa); Console.WriteLine("\nCreated deformatter : " + asymmetricDeformatter.ToString()); return asymmetricDeformatter; } //CreateDSADeformatter // Display to the console the properties of the specified // SignatureDescription. private static void ShowProperties(SignatureDescription signatureDescription) { // Retrieve the class path for the specified SignatureDescription. String classDescription = signatureDescription.ToString(); String deformatterAlgorithm = signatureDescription. get_DeformatterAlgorithm(); String formatterAlgorithm = signatureDescription. get_FormatterAlgorithm(); String digestAlgorithm = signatureDescription.get_DigestAlgorithm(); String keyAlgorithm = signatureDescription.get_KeyAlgorithm(); Console.WriteLine("\n** " + classDescription + " **"); Console.WriteLine("DeformatterAlgorithm : " + deformatterAlgorithm); Console.WriteLine("FormatterAlgorithm : " + formatterAlgorithm); Console.WriteLine("DigestAlgorithm : " + digestAlgorithm); Console.WriteLine("KeyAlgorithm : " + keyAlgorithm); } //ShowProperties } //SignatureDescriptionImpl // // This sample produces the following output: // // ** System.Security.Cryptography.SignatureDescription ** // DeformatterAlgorithm : System.Security.Cryptography. // RSAPKCS1SignatureDeformatter // // FormatterAlgorithm : System.Security.Cryptography. // RSAPKCS1SignatureFormatter // DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider // KeyAlgorithm : System.Security.Cryptography.RSACryptoServiceProvider // // ** System.Security.Cryptography.SignatureDescription ** // DeformatterAlgorithm : System.Security.Cryptography.DSASignatureDeformatter // FormatterAlgorithm : System.Security.Cryptography.DSASignatureFormatter // DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider // KeyAlgorithm : System.Security.Cryptography.DSACryptoServiceProvider // // Hash algorithm for the DigestAlgorithm property: // System.Security.Cryptography.SH // A1CryptoServiceProvider // // Created formatter : System.Security.Cryptography.DSASignatureFormatter // // Created deformatter : System.Security.Cryptography.DSASignatureDeformatter // This sample completed successfully; press Enter to exit.

System.Security.Cryptography.SignatureDescription


Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


SignatureDescription コンストラクタ ()
アセンブリ: mscorlib (mscorlib.dll 内)


既定の SignatureDescription コンストラクタを呼び出す方法を次のコード例に示します。このコード例は、SignatureDescription クラスのトピックで取り上げているコード例の一部分です。
SignatureDescription^ signatureDescription = gcnew SignatureDescription;

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


SignatureDescription コンストラクタ

名前 | 説明 |
---|---|
SignatureDescription () | SignatureDescription クラスの新しいインスタンスを初期化します。 .NET Compact Framework によってサポートされています。 |
SignatureDescription (SecurityElement) | 指定した SecurityElement から SignatureDescription クラスの新しいインスタンスを初期化します。 |

SignatureDescription コンストラクタ (SecurityElement)
アセンブリ: mscorlib (mscorlib.dll 内)



新しい SignatureDescription クラスを初期化する方法を次のコード例に示します。
4 つのアルゴリズムを含む SecurityElement。このコード例は、SignatureDescription クラスのトピックで取り上げているコード例の一部分です。
Dim securityElement As New SecurityElement("DSASignature") ' Create new security elements for the four algorithms. securityElement.AddChild(new SecurityElement( _ "Key", _ "System.Security.Cryptography.DSACryptoServiceProvider")) securityElement.AddChild(New SecurityElement( _ "Digest", _ "System.Security.Cryptography.SHA1CryptoServiceProvider")) securityElement.AddChild(new SecurityElement( _ "Formatter", _ "System.Security.Cryptography.DSASignatureFormatter")) securityElement.AddChild(new SecurityElement( _ "Deformatter", _ "System.Security.Cryptography.DSASignatureDeformatter")) Dim signatureDescription As New SignatureDescription(securityElement)
SecurityElement securityElement = new SecurityElement("DSASignature"); // Create new security elements for the four algorithms. securityElement.AddChild(new SecurityElement( "Key", "System.Security.Cryptography.DSACryptoServiceProvider")); securityElement.AddChild(new SecurityElement( "Digest", "System.Security.Cryptography.SHA1CryptoServiceProvider")); securityElement.AddChild(new SecurityElement( "Formatter", "System.Security.Cryptography.DSASignatureFormatter")); securityElement.AddChild(new SecurityElement( "Deformatter", "System.Security.Cryptography.DSASignatureDeformatter")); SignatureDescription signatureDescription = new SignatureDescription(securityElement);
SecurityElement^ securityElement = gcnew SecurityElement( L"DSASignature" ); // Create new security elements for the four algorithms. securityElement->AddChild( gcnew SecurityElement( L"Key",L"System.Security.Cryptography.DSACryptoServiceProvider" ) ); securityElement->AddChild( gcnew SecurityElement( L"Digest",L"System.Security.Cryptography.SHA1CryptoServiceProvider" ) ); securityElement->AddChild( gcnew SecurityElement( L"Formatter",L"System.Security.Cryptography.DSASignatureFormatter" ) ); securityElement->AddChild( gcnew SecurityElement( L"Deformatter",L"System.Security.Cryptography.DSASignatureDeformatter" ) ); SignatureDescription^ signatureDescription = gcnew SignatureDescription( securityElement );
SecurityElement securityElement = new SecurityElement("DSASignature"); // Create new security elements for the four algorithms. securityElement.AddChild(new SecurityElement("Key", "System.Security.Cryptography.DSACryptoServiceProvider")); securityElement.AddChild(new SecurityElement("Digest", "System.Security.Cryptography.SHA1CryptoServiceProvider")); securityElement.AddChild(new SecurityElement("Formatter", "System.Security.Cryptography.DSASignatureFormatter")); securityElement.AddChild(new SecurityElement("Deformatter", "System.Security.Cryptography.DSASignatureDeformatter")); SignatureDescription signatureDescription = new SignatureDescription(securityElement);

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


SignatureDescription プロパティ
SignatureDescription メソッド

名前 | 説明 | |
---|---|---|
![]() | CreateDeformatter | DeformatterAlgorithm プロパティを使用して、指定したキーを持つ AsymmetricSignatureDeformatter インスタンスを作成します。 |
![]() | CreateDigest | DigestAlgorithm プロパティを使用して、HashAlgorithm インスタンスを作成します。 |
![]() | CreateFormatter | FormatterAlgorithm プロパティを使用して、指定したキーを持つ AsymmetricSignatureFormatter インスタンスを作成します。 |
![]() | Equals | オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 ( Object から継承されます。) |
![]() | GetHashCode | 特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 ( Object から継承されます。) |
![]() | GetType | 現在のインスタンスの Type を取得します。 ( Object から継承されます。) |
![]() | ReferenceEquals | 指定した複数の Object インスタンスが同一かどうかを判断します。 ( Object から継承されます。) |
![]() | ToString | 現在の Object を表す String を返します。 ( Object から継承されます。) |

名前 | 説明 | |
---|---|---|
![]() | Finalize | Object がガベージ コレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 ( Object から継承されます。) |
![]() | MemberwiseClone | 現在の Object の簡易コピーを作成します。 ( Object から継承されます。) |

SignatureDescription メンバ
SignatureDescription データ型で公開されるメンバを以下の表に示します。



名前 | 説明 | |
---|---|---|
![]() | CreateDeformatter | DeformatterAlgorithm プロパティを使用して、指定したキーを持つ AsymmetricSignatureDeformatter インスタンスを作成します。 |
![]() | CreateDigest | DigestAlgorithm プロパティを使用して、HashAlgorithm インスタンスを作成します。 |
![]() | CreateFormatter | FormatterAlgorithm プロパティを使用して、指定したキーを持つ AsymmetricSignatureFormatter インスタンスを作成します。 |
![]() | Equals | オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 (Object から継承されます。) |
![]() | GetHashCode | 特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 (Object から継承されます。) |
![]() | GetType | 現在のインスタンスの Type を取得します。 (Object から継承されます。) |
![]() | ReferenceEquals | 指定した複数の Object インスタンスが同一かどうかを判断します。 (Object から継承されます。) |
![]() | ToString | 現在の Object を表す String を返します。 (Object から継承されます。) |

名前 | 説明 | |
---|---|---|
![]() | Finalize | Object がガベージ コレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 (Object から継承されます。) |
![]() | MemberwiseClone | 現在の Object の簡易コピーを作成します。 (Object から継承されます。) |

- SignatureDescriptionのページへのリンク