DSACryptoServiceProvider.CspKeyContainerInfo プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

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DSACryptoServiceProvider.CspKeyContainerInfo プロパティ

メモ : このプロパティは、.NET Framework version 2.0 で新しく追加されたものです。

暗号化キーに関する追加情報を記述する CspKeyContainerInfo オブジェクトを取得します。

名前空間: System.Security.Cryptography
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

<ComVisibleAttribute(False)> _
Public ReadOnly Property
 CspKeyContainerInfo As CspKeyContainerInfo

Visual Basic (使用法)

Dim instance As DSACryptoServiceProvider
Dim value As CspKeyContainerInfo

value = instance.CspKeyContainerInfo

[ComVisibleAttribute(false)] 
public CspKeyContainerInfo CspKeyContainerInfo { get;
 }

C++

[ComVisibleAttribute(false)] 
public:
virtual property CspKeyContainerInfo^ CspKeyContainerInfo {
    CspKeyContainerInfo^ get () sealed;
}

/** @property */
public final CspKeyContainerInfo get_CspKeyContainerInfo ()

JScript

public final function get
 CspKeyContainerInfo () : CspKeyContainerInfo

プロパティ値
暗号化キーに関する追加情報を記述する CspKeyContainerInfo オブジェクト。

解説

CspKeyContainerInfo プロパティを使用して、暗号化キーペアに関する追加情報を取得します。返された CspKeyContainerInfo オブジェクトは、キーがエクスポート可能かどうかを記述し、キーコンテナ名、プロバイダに関する情報、およびその他の情報を指定します。

ランダムキーが生成された場合、そのキーを使用するメソッドを呼び出すまでキーコンテナは作成されません。キーコンテナが作成されていない場合、CspKeyContainerInfo プロパティから返される CspKeyContainerInfo オブジェクトの一部のプロパティは、CryptographicException をスローします。キーコンテナが作成されていることを確認するには、CspKeyContainerInfo プロパティを呼び出す前に、SignData、SignHash、VerifyData、VerifyHash などのメソッドを呼び出します。

使用例

CspKeyContainerInfo プロパティを呼び出す方法を次のコード例に示します。

Visual Basic

Imports System
Imports System.Security.Cryptography
Imports System.Text

Module CspKeyContainerInfoExample

    Sub Main(ByVal args() As
 String)
        Dim dsa As New DSACryptoServiceProvider()

        Try
            ' Note: In cases where a random key is generated,   
            ' a key container is not created until you call  
            ' a method that uses the key.  This example calls
            ' the SignData method before calling the
            ' CspKeyContainerInfo property so that a key
            ' container is created.  
            ' Create some data to encrypt and display it.
            Dim data As String
 = "Here is some data to sign."

            Console.WriteLine("Data to sign: " + data)

            ' Convert the data to an array of bytes and 
            ' encrypt it.
            Dim byteData As Byte()
 = Encoding.ASCII.GetBytes(data)

            Dim encData As Byte()
 = dsa.SignData(byteData, 0, byteData.Length)

            ' Display the encrypted value.
            Console.WriteLine("Signed Data: " + Encoding.ASCII.GetString(encData))

            Console.WriteLine()

            Console.WriteLine("CspKeyContainerInfo information:")

            Console.WriteLine()

            ' Create a new CspKeyContainerInfo object.
            Dim keyInfo As CspKeyContainerInfo
 = dsa.CspKeyContainerInfo

            ' Display the value of each property.
            Console.WriteLine("Accessible property: "
 + keyInfo.Accessible.ToString())

            Console.WriteLine("Exportable property: "
 + keyInfo.Exportable.ToString())

            Console.WriteLine("HardwareDevice property: "
 + keyInfo.HardwareDevice.ToString())

            Console.WriteLine("KeyContainerName property: "
 + keyInfo.KeyContainerName)

            Console.WriteLine("KeyNumber property: "
 + keyInfo.KeyNumber.ToString())

            Console.WriteLine("MachineKeyStore property: "
 + keyInfo.MachineKeyStore.ToString())

            Console.WriteLine("Protected property: "
 + keyInfo.Protected.ToString())

            Console.WriteLine("ProviderName property: "
 + keyInfo.ProviderName)

            Console.WriteLine("ProviderType property: "
 + keyInfo.ProviderType.ToString())

            Console.WriteLine("RandomlyGenerated property: "
 + keyInfo.RandomlyGenerated.ToString())

            Console.WriteLine("Removable property: "
 + keyInfo.Removable.ToString())

            Console.WriteLine("UniqueKeyContainerName property:
 " + keyInfo.UniqueKeyContainerName)


        Catch e As Exception
            Console.WriteLine(e.ToString())
        Finally
            ' Clear the key.
            dsa.Clear()
        End Try
        Console.ReadLine()

    End Sub
End Module

using System;
using System.Security.Cryptography;
using System.Text;


public class CspKeyContainerInfoExample
{

    public static void Main(String[]
 args)
    {
        DSACryptoServiceProvider dsa= new DSACryptoServiceProvider();

        try
        {
            // Note: In cases where a random key is generated,   
            // a key container is not created until you call  
            // a method that uses the key.  This example calls
            // the SignData method before calling the
            // CspKeyContainerInfo property so that a key
            // container is created.  

            // Create some data to encrypt and display it.
            string data = "Here is some data to sign.";

            Console.WriteLine("Data to sign: " + data);

            // Convert the data to an array of bytes and 
            // encrypt it.
            byte[] byteData = Encoding.ASCII.GetBytes(data);

            byte[] sData = dsa.SignData(byteData, 0, byteData.Length);

            // Display the encrypted value.
            Console.WriteLine("Signed Data: " + Encoding.ASCII.GetString(sData));

            Console.WriteLine();

            Console.WriteLine("CspKeyContainerInfo information:");

            Console.WriteLine();

            // Create a new CspKeyContainerInfo object.
            CspKeyContainerInfo keyInfo = dsa.CspKeyContainerInfo;

            // Display the value of each property.

            Console.WriteLine("Accessible property: " + keyInfo.Accessible);

            Console.WriteLine("Exportable property: " + keyInfo.Exportable);

            Console.WriteLine("HardwareDevice property: " + keyInfo.HardwareDevice);

            Console.WriteLine("KeyContainerName property: " + keyInfo.KeyContainerName);

            Console.WriteLine("KeyNumber property: " + keyInfo.KeyNumber.ToString());

            Console.WriteLine("MachineKeyStore property: " + keyInfo.MachineKeyStore);

            Console.WriteLine("Protected property: " + keyInfo.Protected);

            Console.WriteLine("ProviderName property: " + keyInfo.ProviderName);

            Console.WriteLine("ProviderType property: " + keyInfo.ProviderType);

            Console.WriteLine("RandomlyGenerated property: " + keyInfo.RandomlyGenerated);

            Console.WriteLine("Removable property: " + keyInfo.Removable);

            Console.WriteLine("UniqueKeyContainerName property: " + keyInfo.UniqueKeyContainerName);


        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
        finally
        {
            // Clear the key.
            dsa.Clear();
        }
        Console.ReadLine();
    }
}

C++

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
using namespace System;
public ref class CspKeyContainerInfoExample
{
private:
   int main()
   {
      DSACryptoServiceProvider^ dsa = gcnew DSACryptoServiceProvider;
      try
      {
         
         // Note: In cases where a random key is generated,   
         // a key container is not created until you call  
         // a method that uses the key.  This example calls
         // the SignData method before calling the
         // CspKeyContainerInfo property so that a key
         // container is created.  
         // Create some data to encrypt and display it.
         String^ data = L"Here is some data to sign.";
         Console::WriteLine( L"Data to sign: {0}", data );
         
         // Convert the data to an array of bytes and 
         // encrypt it.
         array<Byte>^byteData = Encoding::ASCII->GetBytes( data );
         array<Byte>^sData = dsa->SignData( byteData, 0, byteData->Length
 );
         
         // Display the encrypted value.
         Console::WriteLine( L"Signed Data: {0}", Encoding::ASCII->GetString(
 sData ) );
         Console::WriteLine();
         Console::WriteLine( L"CspKeyContainerInfo information:" );
         Console::WriteLine();
         
         // Create a new CspKeyContainerInfo object.
         CspKeyContainerInfo^ keyInfo = dsa->CspKeyContainerInfo;
         
         // Display the value of each property.
         Console::WriteLine( L"Accessible property: {0}", keyInfo->Accessible
 );
         Console::WriteLine( L"Exportable property: {0}", keyInfo->Exportable
 );
         Console::WriteLine( L"HardwareDevice property: {0}", keyInfo->HardwareDevice
 );
         Console::WriteLine( L"KeyContainerName property: {0}", keyInfo->KeyContainerName
 );
         Console::WriteLine( L"KeyNumber property: {0}", keyInfo->KeyNumber
 );
         Console::WriteLine( L"MachineKeyStore property: {0}", keyInfo->MachineKeyStore
 );
         Console::WriteLine( L"Protected property: {0}", keyInfo->Protected
 );
         Console::WriteLine( L"ProviderName property: {0}", keyInfo->ProviderName
 );
         Console::WriteLine( L"ProviderType property: {0}", keyInfo->ProviderType
 );
         Console::WriteLine( L"RandomlyGenerated property: {0}", keyInfo->RandomlyGenerated
 );
         Console::WriteLine( L"Removable property: {0}", keyInfo->Removable
 );
         Console::WriteLine( L"UniqueKeyContainerName property: {0}", keyInfo->UniqueKeyContainerName
 );
      }
      catch ( Exception^ e ) 
      {
         Console::WriteLine( e );
      }
      finally
      {
         
         // Clear the key.
         dsa->Clear();
      }

      Console::ReadLine();
      return 1;
   }

};

プラットフォーム

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。

バージョン情報

.NET Framework
サポート対象 : 2.0
.NET Compact Framework
サポート対象 : 2.0

参照

関連項目
DSACryptoServiceProvider クラス
DSACryptoServiceProvider メンバ
System.Security.Cryptography 名前空間
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DSACryptoServiceProvider.CspKeyContainerInfo プロパティとは？ わかりやすく解説

DSACryptoServiceProvider.CspKeyContainerInfo プロパティ

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DSACryptoServiceProvider.CspKeyContainerInfo プロパティとは？わかりやすく解説