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


KeySizes クラスのメンバを使用する例を次に示します。
Imports System 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 = "" ' Initializes a new instance of the KeySizes class with the ' specified key values. Dim MinSize As Integer = 64 Dim MaxSize As Integer = 1024 Dim SkipSize As Integer = 64 Dim keySizes As New KeySizes(MinSize, MaxSize, SkipSize) ' Show the values of the keys. ShowKeys(New KeySizes(0) {keySizes}, "Custom Keys") ' Create a new symmetric algorithm and display its key values. Dim rijn As SymmetricAlgorithm = SymmetricAlgorithm.Create() WriteLine("rijn.blocksize:" + rijn.BlockSize.ToString()) ShowKeys(rijn.LegalKeySizes, rijn.ToString()) ' Create a new RSA algorithm and display its key values. Dim rsaCSP As New RSACryptoServiceProvider(384) WriteLine("RSACryptoServiceProvider KeySize = " + _ rsaCSP.KeySize.ToString()) ShowKeys(rsaCSP.LegalKeySizes, rsaCSP.ToString()) ' Reset the cursor and conclude application. WriteLine("This sample completed successfully;" + _ " press Exit to continue.") tbxOutput.Cursor = Cursors.Default End Sub ' Display specified KeySize properties to output textbox. Private Sub ShowKeys( _ ByVal KeySizes() As KeySizes, _ ByVal objectName As String) ' Retrieve the first KeySizes in the array. Dim firstKeySize As KeySizes = KeySizes(0) ' Retrieve the minimum key size in bits. Dim minKeySize As Integer = firstKeySize.MinSize ' Retrieve the maximum key size in bits. Dim maxKeySize As Integer = firstKeySize.MaxSize ' Retrieve the interval between valid key size in bits. Dim skipKeySize As Integer = firstKeySize.SkipSize WriteLine("KeySizes retrieved from the " + objectName + " object.") WriteLine("Minimum key size bits: " + minKeySize.ToString()) WriteLine("Maximum key size bits: " + maxKeySize.ToString()) WriteLine("Interval between key size bits: " + skipKeySize.ToString()) WriteLine("") End Sub ' Display the message to the textbox with a carriage return and line feed. 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 = "KeySizes" Me.Panel2.ResumeLayout(False) Me.Panel1.ResumeLayout(False) Me.ResumeLayout(False) End Sub #End Region End Class ' ' This sample produces the following output: ' ' KeySizes retrieved from the Custom Keys object. ' Minimum key size bits: 64 ' Maximum key size bits: 1024 ' Interval between key size bits: 64 ' ' rijn.blocksize:128 ' KeySizes retrieved from the System.Security.Cryptography.RijndaelManaged ' object. ' Minimum key size bits: 128 ' Maximum key size bits: 256 ' Interval between key size bits: 64 ' ' RSACryptoServiceProvider KeySize = 384 ' KeySizes retrieved from the ' System.Security.Cryptography.RSACryptoServiceProvider object. ' Minimum key size bits: 384 ' Maximum key size bits: 16384 ' Interval between key size bits: 8 ' ' This sample completed successfully; press Exit to continue.
using System; using System.Security.Cryptography; namespace Contoso { class KeySizesMembers { [STAThread] static void Main(string[] args) { // Initializes a new instance of the KeySizes class with the // specified key values. int minSize = 64; int maxSize = 1024; int skipSize = 64; KeySizes keySizes = new KeySizes(minSize, maxSize, skipSize); // Show the values of the keys. ShowKeys(new KeySizes[1]{keySizes}, "Custom Keys"); // Create a new symmetric algorithm and display its key values. SymmetricAlgorithm rijn = SymmetricAlgorithm.Create(); ShowKeys(rijn.LegalKeySizes, rijn.ToString()); Console.WriteLine("rijn.blocksize:" + rijn.BlockSize); // Create a new RSA algorithm and display its key values. RSACryptoServiceProvider rsaCSP = new RSACryptoServiceProvider(384); ShowKeys(rsaCSP.LegalKeySizes, rsaCSP.ToString()); Console.WriteLine("RSACryptoServiceProvider KeySize = " + rsaCSP.KeySize); Console.WriteLine("This sample completed successfully; " + "press Enter to exit."); Console.ReadLine(); } // Display specified KeySize properties to the console. private static void ShowKeys(KeySizes[] keySizes, string objectName) { // Retrieve the first KeySizes in the array. KeySizes firstKeySize = keySizes[0]; // Retrieve the minimum key size in bits. int minKeySize = firstKeySize.MinSize; // Retrieve the maximum key size in bits. int maxKeySize = firstKeySize.MaxSize; // Retrieve the interval between valid key size in bits. int skipKeySize = firstKeySize.SkipSize; Console.Write("\n KeySizes retrieved from the "); Console.WriteLine(objectName + " object."); Console.WriteLine("Minimum key size bits: " + minKeySize); Console.WriteLine("Maximum key size bits: " + maxKeySize); Console.WriteLine("Interval between key size bits: " + skipKeySize); } } } // // This sample produces the following output: // // KeySizes retrieved from the Custom Keys object. // Minimum key size bits: 64 // Maximum key size bits: 1024 // Interval between key size bits: 64 // // KeySizes retrieved from the System.Security.Cryptography.RijndaelManaged // object. // Minimum key size bits: 128 // Maximum key size bits: 256 // Interval between key size bits: 64 // rijn.blocksize:128 // // KeySizes retrieved from the // System.Security.Cryptography.RSACryptoServiceProvider object. // Minimum key size bits: 384 // Maximum key size bits: 16384 // Interval between key size bits: 8 // RSACryptoServiceProvider KeySize = 384 // This sample completed successfully; press Enter to exit.
using namespace System; using namespace System::Security::Cryptography; namespace CryptographySample { ref class KeySizesMembers { public: static void Work() { // Initializes a new instance of the KeySizes class // with the specified key values. int minSize = 64; int maxSize = 1024; int skipSize = 64; KeySizes^ keySizes = gcnew KeySizes(minSize, maxSize, skipSize); // Show the values of the keys. ShowKeys(gcnew array<KeySizes^>(1) {keySizes}, "Custom Keys"); // Create a new symmetric algorithm and display its // key values. SymmetricAlgorithm^ symAlg = SymmetricAlgorithm::Create(); ShowKeys(symAlg->LegalKeySizes, symAlg->ToString()); Console::WriteLine("rijn.blocksize:{0}", symAlg->BlockSize); // Create a new RSA algorithm and display its key values. RSACryptoServiceProvider^ rsaCSP = gcnew RSACryptoServiceProvider(384); ShowKeys(rsaCSP->LegalKeySizes, rsaCSP->ToString()); Console::WriteLine("RSACryptoServiceProvider KeySize =" " {0}", rsaCSP->KeySize); Console::WriteLine("This sample completed successfully; " "press Enter to exit."); Console::ReadLine(); } private: // Display specified KeySize properties to the console. static void ShowKeys(array <KeySizes^>^ keySizes, String^ objectName) { // Retrieve the first KeySizes in the array. KeySizes^ firstKeySize = keySizes[0]; // Retrieve the minimum key size in bits. int minKeySize = firstKeySize->MinSize; // Retrieve the maximum key size in bits. int maxKeySize = firstKeySize->MaxSize; // Retrieve the interval between valid key size in bits. int skipKeySize = firstKeySize->SkipSize; Console::Write("\n KeySizes retrieved from the "); Console::WriteLine("{0} object.", objectName); Console::WriteLine("Minimum key size bits: {0}", minKeySize); Console::WriteLine("Maximum key size bits: {0}", maxKeySize); Console::WriteLine("Interval between key size bits: {0}", skipKeySize); } }; } using namespace CryptographySample; int main() { KeySizesMembers::Work(); } // // This sample produces the following output: // // KeySizes retrieved from the Custom Keys object. // Minimum key size bits: 64 // Maximum key size bits: 1024 // Interval between key size bits: 64 // // KeySizes retrieved from the // System.Security.Cryptography.RijndaelManaged object. // Minimum key size bits: 128 // Maximum key size bits: 256 // Interval between key size bits: 64 // rijn.blocksize:128 // // KeySizes retrieved from the // System.Security.Cryptography.RSACryptoServiceProvider object. // Minimum key size bits: 384 // Maximum key size bits: 16384 // Interval between key size bits: 8 // RSACryptoServiceProvider KeySize = 384 // This sample completed successfully; press Enter to exit.
import System.*; import System.Security.Cryptography.*; class KeySizesMembers { /** @attribute STAThread() */ public static void main(String[] args) { // Initializes a new instance of the KeySizes class with the // specified key values. int minSize = 64; int maxSize = 1024; int skipSize = 64; KeySizes keySizes = new KeySizes(minSize, maxSize, skipSize); // Show the values of the keys. ShowKeys(new KeySizes[] { keySizes }, "Custom Keys"); // Create a new symmetric algorithm and display its key values. SymmetricAlgorithm rijn = SymmetricAlgorithm.Create(); ShowKeys(rijn.get_LegalKeySizes(), rijn.ToString()); Console.WriteLine("rijn.blocksize:" + rijn.get_BlockSize()); // Create a new RSA algorithm and display its key values. RSACryptoServiceProvider rsaCSP = new RSACryptoServiceProvider(384); ShowKeys(rsaCSP.get_LegalKeySizes(), rsaCSP.ToString()); Console.WriteLine("RSACryptoServiceProvider KeySize = " + rsaCSP.get_KeySize()); Console.WriteLine("This sample completed successfully; " + "press Enter to exit."); Console.ReadLine(); } //main // Display specified KeySize properties to the console. private static void ShowKeys(KeySizes keySizes[], String objectName) { // Retrieve the first KeySizes in the array. KeySizes firstKeySize = (KeySizes)keySizes.get_Item(0); // Retrieve the minimum key size in bits. int minKeySize = firstKeySize.get_MinSize(); // Retrieve the maximum key size in bits. int maxKeySize = firstKeySize.get_MaxSize(); // Retrieve the interval between valid key size in bits. int skipKeySize = firstKeySize.get_SkipSize(); Console.Write("\n KeySizes retrieved from the "); Console.WriteLine(objectName + " object."); Console.WriteLine("Minimum key size bits: " + minKeySize); Console.WriteLine("Maximum key size bits: " + maxKeySize); Console.WriteLine("Interval between key size bits: " + skipKeySize); } //ShowKeys } //KeySizesMembers // // This sample produces the following output: // // KeySizes retrieved from the Custom Keys object. // Minimum key size bits: 64 // Maximum key size bits: 1024 // Interval between key size bits: 64 // // KeySizes retrieved from the System.Security.Cryptography.RijndaelManaged // object. // Minimum key size bits: 128 // Maximum key size bits: 256 // Interval between key size bits: 64 // rijn.blocksize:128 // // KeySizes retrieved from the // System.Security.Cryptography.RSACryptoServiceProvider object. // Minimum key size bits: 384 // Maximum key size bits: 16384 // Interval between key size bits: 8 // RSACryptoServiceProvider KeySize = 384 // This sample completed successfully; press Enter to exit.

System.Security.Cryptography.KeySizes


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。


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

Dim minSize As Integer Dim maxSize As Integer Dim skipSize As Integer Dim instance As New KeySizes(minSize, maxSize, skipSize)
KeySizes の新しく作成したインスタンス。

KeySizes コンストラクタの使用方法を次のコードに示します。このコード例は、KeySizes 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 MinSize As Integer = 64 Dim MaxSize As Integer = 1024 Dim SkipSize As Integer = 64 Dim keySizes As New KeySizes(MinSize, MaxSize, SkipSize)
int minSize = 64; int maxSize = 1024; int skipSize = 64; KeySizes keySizes = new KeySizes(minSize, maxSize, skipSize);

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。


KeySizes プロパティ
KeySizes メソッド

名前 | 説明 | |
---|---|---|
![]() | 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。) |

KeySizes メンバ
対称暗号アルゴリズムに対して有効なキー サイズのセットを決定します。
KeySizes 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 | |
---|---|---|
![]() | 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。) |

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