CspKeyContainerInfo.Protected プロパティ

.NET Framework クラス ライブラリ リファレンス

CspKeyContainerInfo.Protected 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。

キー ペアが保護されているかどうかを示す値を取得します。

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

Visual Basic (宣言)

Public ReadOnly Property
 Protected As Boolean

Visual Basic (使用法)

Dim instance As CspKeyContainerInfo
Dim value As Boolean

value = instance.Protected

C#

public bool Protected { get;
 }

C++

public:
property bool Protected {
    bool get ();
}

J#

/** @property */
public boolean get_Protected ()

JScript

public function get Protected
 () : boolean

プロパティ値
キー ペアが保護されている場合は true。それ以外の場合は false。

例外

例外の種類	条件
NotSupportedException	キー型はサポートされていません。
CryptographicException	暗号化サービス プロバイダが見つかりません。 または キー コンテナが見つかりませんでした。

使用例

キー コンテナを作成して、そのコンテナに関する情報を取得するコード例を次に示します。

Visual Basic

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

Module CspKeyContainerInfoExample

    Sub Main(ByVal args() As
 String)
        Dim rsa As New RSACryptoServiceProvider()

        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 Encrypt 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 encrypt."

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

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

            Dim encData As Byte()
 = rsa.Encrypt(byteData, False)

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

            Console.WriteLine()

            Console.WriteLine("CspKeyContainerInfo information:")

            Console.WriteLine()

            ' Create a new CspKeyContainerInfo object.
            Dim keyInfo As CspKeyContainerInfo
 = rsa.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.
            rsa.Clear()
        End Try
        Console.ReadLine()

    End Sub
End Module

C#

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


public class CspKeyContainerInfoExample
{

    public static void Main(String[]
 args)
    {
        RSACryptoServiceProvider rsa= new RSACryptoServiceProvider();

        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 Encrypt 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 encrypt.";

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

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

            byte[] encData = rsa.Encrypt(byteData, false);

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

            Console.WriteLine();

            Console.WriteLine("CspKeyContainerInfo information:");

            Console.WriteLine();

            // Create a new CspKeyContainerInfo object.
            CspKeyContainerInfo keyInfo = rsa.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.
            rsa.Clear();
        }
    }
}

C++

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
int main()
{
   RSACryptoServiceProvider^ rsa = gcnew RSACryptoServiceProvider;
   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 Encrypt 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 encrypt.";
      Console::WriteLine( L"Data to encrypt: {0}", data );
      
      // Convert the data to an array of bytes and 
      // encrypt it.
      array<Byte>^byteData = Encoding::ASCII->GetBytes( data );
      array<Byte>^encData = rsa->Encrypt( byteData, false
 );
      
      // Display the encrypted value.
      Console::WriteLine( L"Encrypted Data: {0}", Encoding::ASCII->GetString(
 encData ) );
      Console::WriteLine();
      Console::WriteLine( L"CspKeyContainerInfo information:" );
      Console::WriteLine();
      
      // Create a new CspKeyContainerInfo object.
      CspKeyContainerInfo^ keyInfo = rsa->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.
      rsa->Clear();
   }

}

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
CspKeyContainerInfo クラス
CspKeyContainerInfo メンバ
System.Security.Cryptography 名前空間