AsnEncodedDataとは？ わかりやすく解説

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AsnEncodedData クラス

メモ : このクラスは、.NET Framework version 2.0 で新しく追加されたものです。

ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを表します。

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

Visual Basic (宣言)
Public Class AsnEncodedData
Visual Basic (使用法)
Dim instance As AsnEncodedData
C#
public class AsnEncodedData
C++
public ref class AsnEncodedData
J#
public class AsnEncodedData
JScript
public class AsnEncodedData
解説解説

ASN.1 (Abstract Syntax Notation One) は、シリアル転送される抽象オブジェクトを指定する方法であり、CCITT 勧告 X.208 で規定されています。オブジェクトを 1 と 0 のデータ列で表すための一連の ASN.1 規則は、DER (Distinguished Encoding Rules) と呼ばれ、CCITT 勧告 X.509 の第 8.7 項で定義されています。これらのエンコーディング方式は、現在、.NET Framework の Cryptography 名前空間で使用されています。

このクラスのインスタンスにアクセスしているときに未知のデータ型が見つかった場合、データは 16 進数文字列として返されます。

使用例使用例

AsnEncodedData クラスを使用するコード例を次に示します。

Visual Basic
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates



Class AsnEncodedDataSample
   Shared msg As String
   Shared Sub Main()
      'The following example demonstrates the usage the AsnEncodedData
 classes.
      ' Asn encoded data is read from the extensions of an X509 certificate.
      Try
         ' Open the certificate store.
         Dim store As New
 X509Store("MY", StoreLocation.CurrentUser)
         store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
         Dim collection As X509Certificate2Collection
 = CType(store.Certificates, X509Certificate2Collection)
         Dim fcollection As X509Certificate2Collection
 = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False),
 X509Certificate2Collection)
         ' Select one or more certificates to display extensions information.
         Dim scollection As X509Certificate2Collection
 = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate
 Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
         
         ' Create a new AsnEncodedDataCollection object.
         Dim asncoll As New
 AsnEncodedDataCollection()
         Dim i As Integer
         For i = 0 To scollection.Count - 1
            ' Display certificate information.
        msg = "Certificate name: "& scollection(i).GetName()
            MsgBox(msg)

            ' Display extensions information.
            Dim extension As X509Extension
            For Each extension In
  scollection(i).Extensions
               ' Create an AsnEncodedData object using the extensions
 information.
               Dim asndata As New
 AsnEncodedData(extension.Oid, extension.RawData)
           msg = "Extension type: " & extension.Oid.FriendlyName
 & Environment.NewLine & "Oid value: " &
 asndata.Oid.Value _
        & Environment.NewLine & "Raw data length: "
 & asndata.RawData.Length & Environment.NewLine _
        & asndata.Format(True) & Environment.NewLine
               MsgBox(msg)
        
               ' Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
               asncoll.Add(asndata)
            Next extension
         Next i
     msg = "Number of AsnEncodedData items in the collection:
 " & asncoll.Count
         MsgBox(msg)         
         store.Close()

         'Create an enumerator for moving through the collection.
         Dim asne As AsnEncodedDataEnumerator
 = asncoll.GetEnumerator()
         'You must execute a MoveNext() to get to the first item in
 the collection.
         asne.MoveNext()
         ' Write out AsnEncodedData in the collection.
     msg = "First AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
    
         
         asne.MoveNext()
     msg = "Second AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
        
         'Return index in the collection to the beginning.
         asne.Reset()
      Catch 
         MsgBox("Information could not be written out for this
 certificate.")
      End Try
   End Sub 'Main
End Class 'AsnEncodedDataSample
C#
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

class AsnEncodedDataSample
{
    static void Main()
    {        
        //The following example demonstrates the usage the AsnEncodedData
 classes.
        // Asn encoded data is read from the extensions of an X509 certificate.
        try
        {
            // Open the certificate store.
            X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
            X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
            X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,
 DateTime.Now, false);
            // Select one or more certificates to display extensions
 information.
            X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection,
 "Certificate Select", "Select certificates from the following list
 to get extension information on that certificate", X509SelectionFlag.MultiSelection);

            // Create a new AsnEncodedDataCollection object.
            AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
            for (int i = 0; i < scollection.Count;
 i++)
            {
                // Display certificate information.
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
                Console.ResetColor();
                // Display extensions information.
                foreach (X509Extension extension in
 scollection[i].Extensions)
                {
                    // Create an AsnEncodedData object using the extensions
 information.
                    AsnEncodedData asndata = new AsnEncodedData(extension.Oid,
 extension.RawData);
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
                    Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
                    Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length,
 Environment.NewLine);
                    Console.ResetColor();
                    Console.WriteLine(asndata.Format(true));
                    Console.WriteLine(Environment.NewLine);
                    // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
                    asncoll.Add(asndata);
                }
                Console.WriteLine(Environment.NewLine);
            }
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll.Count, Environment.NewLine);
            Console.ResetColor();

            store.Close();
            //Create an enumerator for moving through the collection.
            AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
            //You must execute a MoveNext() to get to the first item
 in the collection.
            asne.MoveNext();
            // Write out AsnEncodedData in the collection.
            Console.ForegroundColor = ConsoleColor.Blue;
            Console.WriteLine("First AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();

            asne.MoveNext();
            Console.ForegroundColor = ConsoleColor.DarkBlue;
            Console.WriteLine("Second AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();
            //Return index in the collection to the beginning.
            asne.Reset();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for
 this certificate.");
        }
    }
}
C++
#using <System.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;

int main()
{
   
   //The following example demonstrates the usage of the AsnEncodedData
 classes.
   // Asn encoded data is read from the extensions of an X509 certificate.
   try
   {
      
      // Open the certificate store.
      X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser
 );
      store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly)
 );
      X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
      X509Certificate2Collection^ fcollection = dynamic_cast<X509Certificate2Collection^>(collection->Find(
 X509FindType::FindByTimeValid, DateTime::Now, false ));
      
      // Select one or more certificates to display extensions information.
      X509Certificate2Collection^ scollection = X509Certificate2UI::SelectFromCollection(fcollection,
 L"Certificate Select",L"Select certificates from the following list
 to get extension information on that certificate",X509SelectionFlag::MultiSelection);
      
      // Create a new AsnEncodedDataCollection object.
      AsnEncodedDataCollection^ asncoll = gcnew AsnEncodedDataCollection;
      for ( int i = 0; i < scollection->Count;
 i++ )
      {
         
         // Display certificate information.
         Console::ForegroundColor = ConsoleColor::Red;
         Console::WriteLine( L"Certificate name: {0}", scollection[i]->GetName()
 );
         Console::ResetColor();
         
         // Display extensions information.
         System::Collections::IEnumerator^ myEnum = scollection[i]->Extensions->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            X509Extension^ extension = safe_cast<X509Extension ^>(myEnum->Current);
            
            // Create an AsnEncodedData object using the extensions
 information.
            AsnEncodedData^ asndata = gcnew AsnEncodedData( extension->Oid,extension->RawData
 );
            Console::ForegroundColor = ConsoleColor::Green;
            Console::WriteLine( L"Extension type: {0}", extension->Oid->FriendlyName
 );
            Console::WriteLine( L"Oid value: {0}", asndata->Oid->Value
 );
            Console::WriteLine( L"Raw data length: {0} {1}", asndata->RawData->Length,
 Environment::NewLine );
            Console::ResetColor();
            Console::WriteLine( asndata->Format(true) );
            Console::WriteLine( Environment::NewLine );
            
            // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
            asncoll->Add( asndata );
         }

         Console::WriteLine( Environment::NewLine );

      }
      Console::ForegroundColor = ConsoleColor::Red;
      Console::WriteLine( L"Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll->Count, Environment::NewLine );
      Console::ResetColor();
      store->Close();
      
      //Create an enumerator for moving through the collection.
      AsnEncodedDataEnumerator^ asne = asncoll->GetEnumerator();
      
      //You must execute a MoveNext() to get to the first item in the
 collection.
      asne->MoveNext();
      
      // Write out AsnEncodedData in the collection.
      Console::ForegroundColor = ConsoleColor::Blue;
      Console::WriteLine( L"First AsnEncodedData in the collection:
 {0}", asne->Current->Format(true) );
      Console::ResetColor();
      asne->MoveNext();
      Console::ForegroundColor = ConsoleColor::DarkBlue;
      Console::WriteLine( L"Second AsnEncodedData in the
 collection: {0}", asne->Current->Format(true) );
      Console::ResetColor();
      
      //Return index in the collection to the beginning.
      asne->Reset();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( L"Information could not be written out for
 this certificate." );
   }

   return 1;
}
継承階層継承階層
System.Object
  System.Security.Cryptography.AsnEncodedData
     System.Security.Cryptography.Pkcs.Pkcs9AttributeObject
     System.Security.Cryptography.X509Certificates.X500DistinguishedName
     System.Security.Cryptography.X509Certificates.X509Extension
スレッド セーフスレッド セーフ
この型の public static (Visual Basic では Shared) メンバはすべて、スレッド セーフです。インスタンス メンバの場合は、スレッド セーフであるとは限りません。
プラットフォームプラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0
参照参照
関連項目
AsnEncodedData メンバ
System.Security.Cryptography 名前空間

AsnEncodedData コンストラクタ ()

メモ : このコンストラクタは、.NET Framework version 2.0 で新しく追加されたものです。

AsnEncodedData クラスの新しいインスタンスを初期化します。

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

Visual Basic (宣言)
Protected Sub New
Visual Basic (使用法)
Dim instance As New AsnEncodedData
C#
protected AsnEncodedData ()
C++
protected:
AsnEncodedData ()
J#
protected AsnEncodedData ()
JScript
protected function AsnEncodedData ()
使用例使用例

AsnEncodedData クラスを使用するコード例を次に示します。

Visual Basic
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates



Class AsnEncodedDataSample
   Shared msg As String
   Shared Sub Main()
      'The following example demonstrates the usage the AsnEncodedData
 classes.
      ' Asn encoded data is read from the extensions of an X509 certificate.
      Try
         ' Open the certificate store.
         Dim store As New
 X509Store("MY", StoreLocation.CurrentUser)
         store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
         Dim collection As X509Certificate2Collection
 = CType(store.Certificates, X509Certificate2Collection)
         Dim fcollection As X509Certificate2Collection
 = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False),
 X509Certificate2Collection)
         ' Select one or more certificates to display extensions information.
         Dim scollection As X509Certificate2Collection
 = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate
 Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
         
         ' Create a new AsnEncodedDataCollection object.
         Dim asncoll As New
 AsnEncodedDataCollection()
         Dim i As Integer
         For i = 0 To scollection.Count - 1
            ' Display certificate information.
        msg = "Certificate name: "& scollection(i).GetName()
            MsgBox(msg)

            ' Display extensions information.
            Dim extension As X509Extension
            For Each extension In
  scollection(i).Extensions
               ' Create an AsnEncodedData object using the extensions
 information.
               Dim asndata As New
 AsnEncodedData(extension.Oid, extension.RawData)
           msg = "Extension type: " & extension.Oid.FriendlyName
 & Environment.NewLine & "Oid value: " &
 asndata.Oid.Value _
        & Environment.NewLine & "Raw data length: "
 & asndata.RawData.Length & Environment.NewLine _
        & asndata.Format(True) & Environment.NewLine
               MsgBox(msg)
        
               ' Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
               asncoll.Add(asndata)
            Next extension
         Next i
     msg = "Number of AsnEncodedData items in the collection:
 " & asncoll.Count
         MsgBox(msg)         
         store.Close()

         'Create an enumerator for moving through the collection.
         Dim asne As AsnEncodedDataEnumerator
 = asncoll.GetEnumerator()
         'You must execute a MoveNext() to get to the first item in
 the collection.
         asne.MoveNext()
         ' Write out AsnEncodedData in the collection.
     msg = "First AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
    
         
         asne.MoveNext()
     msg = "Second AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
        
         'Return index in the collection to the beginning.
         asne.Reset()
      Catch 
         MsgBox("Information could not be written out for this
 certificate.")
      End Try
   End Sub 'Main
End Class 'AsnEncodedDataSample
C#
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

class AsnEncodedDataSample
{
    static void Main()
    {        
        //The following example demonstrates the usage the AsnEncodedData
 classes.
        // Asn encoded data is read from the extensions of an X509 certificate.
        try
        {
            // Open the certificate store.
            X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
            X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
            X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,
 DateTime.Now, false);
            // Select one or more certificates to display extensions
 information.
            X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection,
 "Certificate Select", "Select certificates from the following list
 to get extension information on that certificate", X509SelectionFlag.MultiSelection);

            // Create a new AsnEncodedDataCollection object.
            AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
            for (int i = 0; i < scollection.Count;
 i++)
            {
                // Display certificate information.
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
                Console.ResetColor();
                // Display extensions information.
                foreach (X509Extension extension in
 scollection[i].Extensions)
                {
                    // Create an AsnEncodedData object using the extensions
 information.
                    AsnEncodedData asndata = new AsnEncodedData(extension.Oid,
 extension.RawData);
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
                    Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
                    Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length,
 Environment.NewLine);
                    Console.ResetColor();
                    Console.WriteLine(asndata.Format(true));
                    Console.WriteLine(Environment.NewLine);
                    // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
                    asncoll.Add(asndata);
                }
                Console.WriteLine(Environment.NewLine);
            }
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll.Count, Environment.NewLine);
            Console.ResetColor();

            store.Close();
            //Create an enumerator for moving through the collection.
            AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
            //You must execute a MoveNext() to get to the first item
 in the collection.
            asne.MoveNext();
            // Write out AsnEncodedData in the collection.
            Console.ForegroundColor = ConsoleColor.Blue;
            Console.WriteLine("First AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();

            asne.MoveNext();
            Console.ForegroundColor = ConsoleColor.DarkBlue;
            Console.WriteLine("Second AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();
            //Return index in the collection to the beginning.
            asne.Reset();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for
 this certificate.");
        }
    }
}
C++
#using <System.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;

int main()
{
   
   //The following example demonstrates the usage of the AsnEncodedData
 classes.
   // Asn encoded data is read from the extensions of an X509 certificate.
   try
   {
      
      // Open the certificate store.
      X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser
 );
      store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly)
 );
      X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
      X509Certificate2Collection^ fcollection = dynamic_cast<X509Certificate2Collection^>(collection->Find(
 X509FindType::FindByTimeValid, DateTime::Now, false ));
      
      // Select one or more certificates to display extensions information.
      X509Certificate2Collection^ scollection = X509Certificate2UI::SelectFromCollection(fcollection,
 L"Certificate Select",L"Select certificates from the following list
 to get extension information on that certificate",X509SelectionFlag::MultiSelection);
      
      // Create a new AsnEncodedDataCollection object.
      AsnEncodedDataCollection^ asncoll = gcnew AsnEncodedDataCollection;
      for ( int i = 0; i < scollection->Count;
 i++ )
      {
         
         // Display certificate information.
         Console::ForegroundColor = ConsoleColor::Red;
         Console::WriteLine( L"Certificate name: {0}", scollection[i]->GetName()
 );
         Console::ResetColor();
         
         // Display extensions information.
         System::Collections::IEnumerator^ myEnum = scollection[i]->Extensions->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            X509Extension^ extension = safe_cast<X509Extension ^>(myEnum->Current);
            
            // Create an AsnEncodedData object using the extensions
 information.
            AsnEncodedData^ asndata = gcnew AsnEncodedData( extension->Oid,extension->RawData
 );
            Console::ForegroundColor = ConsoleColor::Green;
            Console::WriteLine( L"Extension type: {0}", extension->Oid->FriendlyName
 );
            Console::WriteLine( L"Oid value: {0}", asndata->Oid->Value
 );
            Console::WriteLine( L"Raw data length: {0} {1}", asndata->RawData->Length,
 Environment::NewLine );
            Console::ResetColor();
            Console::WriteLine( asndata->Format(true) );
            Console::WriteLine( Environment::NewLine );
            
            // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
            asncoll->Add( asndata );
         }

         Console::WriteLine( Environment::NewLine );

      }
      Console::ForegroundColor = ConsoleColor::Red;
      Console::WriteLine( L"Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll->Count, Environment::NewLine );
      Console::ResetColor();
      store->Close();
      
      //Create an enumerator for moving through the collection.
      AsnEncodedDataEnumerator^ asne = asncoll->GetEnumerator();
      
      //You must execute a MoveNext() to get to the first item in the
 collection.
      asne->MoveNext();
      
      // Write out AsnEncodedData in the collection.
      Console::ForegroundColor = ConsoleColor::Blue;
      Console::WriteLine( L"First AsnEncodedData in the collection:
 {0}", asne->Current->Format(true) );
      Console::ResetColor();
      asne->MoveNext();
      Console::ForegroundColor = ConsoleColor::DarkBlue;
      Console::WriteLine( L"Second AsnEncodedData in the
 collection: {0}", asne->Current->Format(true) );
      Console::ResetColor();
      
      //Return index in the collection to the beginning.
      asne->Reset();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( L"Information could not be written out for
 this certificate." );
   }

   return 1;
}
プラットフォームプラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0
参照参照
関連項目
AsnEncodedData クラス
AsnEncodedData メンバ
System.Security.Cryptography 名前空間

AsnEncodedData コンストラクタ (AsnEncodedData)

メモ : このコンストラクタは、.NET Framework version 2.0 で新しく追加されたものです。

AsnEncodedData クラスの新しいインスタンスを、AsnEncodedData クラスのインスタンスを使用して初期化します。

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

Visual Basic (宣言)
Public Sub New ( _
    asnEncodedData As AsnEncodedData _
)
Visual Basic (使用法)
Dim asnEncodedData As AsnEncodedData

Dim instance As New AsnEncodedData(asnEncodedData)
C#
public AsnEncodedData (
    AsnEncodedData asnEncodedData
)
C++
public:
AsnEncodedData (
    AsnEncodedData^ asnEncodedData
)
J#
public AsnEncodedData (
    AsnEncodedData asnEncodedData
)
JScript
public function AsnEncodedData (
    asnEncodedData : AsnEncodedData
)

パラメータ

asnEncodedData

AsnEncodedData クラスのインスタンス。

解説解説

このコンストラクタは、指定された AsnEncodedData インスタンスのコピーを作成します。

使用例使用例

AsnEncodedData クラスを使用するコード例を次に示します。

Visual Basic
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates



Class AsnEncodedDataSample
   Shared msg As String
   Shared Sub Main()
      'The following example demonstrates the usage the AsnEncodedData
 classes.
      ' Asn encoded data is read from the extensions of an X509 certificate.
      Try
         ' Open the certificate store.
         Dim store As New
 X509Store("MY", StoreLocation.CurrentUser)
         store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
         Dim collection As X509Certificate2Collection
 = CType(store.Certificates, X509Certificate2Collection)
         Dim fcollection As X509Certificate2Collection
 = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False),
 X509Certificate2Collection)
         ' Select one or more certificates to display extensions information.
         Dim scollection As X509Certificate2Collection
 = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate
 Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
         
         ' Create a new AsnEncodedDataCollection object.
         Dim asncoll As New
 AsnEncodedDataCollection()
         Dim i As Integer
         For i = 0 To scollection.Count - 1
            ' Display certificate information.
        msg = "Certificate name: "& scollection(i).GetName()
            MsgBox(msg)

            ' Display extensions information.
            Dim extension As X509Extension
            For Each extension In
  scollection(i).Extensions
               ' Create an AsnEncodedData object using the extensions
 information.
               Dim asndata As New
 AsnEncodedData(extension.Oid, extension.RawData)
           msg = "Extension type: " & extension.Oid.FriendlyName
 & Environment.NewLine & "Oid value: " &
 asndata.Oid.Value _
        & Environment.NewLine & "Raw data length: "
 & asndata.RawData.Length & Environment.NewLine _
        & asndata.Format(True) & Environment.NewLine
               MsgBox(msg)
        
               ' Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
               asncoll.Add(asndata)
            Next extension
         Next i
     msg = "Number of AsnEncodedData items in the collection:
 " & asncoll.Count
         MsgBox(msg)         
         store.Close()

         'Create an enumerator for moving through the collection.
         Dim asne As AsnEncodedDataEnumerator
 = asncoll.GetEnumerator()
         'You must execute a MoveNext() to get to the first item in
 the collection.
         asne.MoveNext()
         ' Write out AsnEncodedData in the collection.
     msg = "First AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
    
         
         asne.MoveNext()
     msg = "Second AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
        
         'Return index in the collection to the beginning.
         asne.Reset()
      Catch 
         MsgBox("Information could not be written out for this
 certificate.")
      End Try
   End Sub 'Main
End Class 'AsnEncodedDataSample
C#
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

class AsnEncodedDataSample
{
    static void Main()
    {        
        //The following example demonstrates the usage the AsnEncodedData
 classes.
        // Asn encoded data is read from the extensions of an X509 certificate.
        try
        {
            // Open the certificate store.
            X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
            X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
            X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,
 DateTime.Now, false);
            // Select one or more certificates to display extensions
 information.
            X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection,
 "Certificate Select", "Select certificates from the following list
 to get extension information on that certificate", X509SelectionFlag.MultiSelection);

            // Create a new AsnEncodedDataCollection object.
            AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
            for (int i = 0; i < scollection.Count;
 i++)
            {
                // Display certificate information.
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
                Console.ResetColor();
                // Display extensions information.
                foreach (X509Extension extension in
 scollection[i].Extensions)
                {
                    // Create an AsnEncodedData object using the extensions
 information.
                    AsnEncodedData asndata = new AsnEncodedData(extension.Oid,
 extension.RawData);
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
                    Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
                    Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length,
 Environment.NewLine);
                    Console.ResetColor();
                    Console.WriteLine(asndata.Format(true));
                    Console.WriteLine(Environment.NewLine);
                    // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
                    asncoll.Add(asndata);
                }
                Console.WriteLine(Environment.NewLine);
            }
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll.Count, Environment.NewLine);
            Console.ResetColor();

            store.Close();
            //Create an enumerator for moving through the collection.
            AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
            //You must execute a MoveNext() to get to the first item
 in the collection.
            asne.MoveNext();
            // Write out AsnEncodedData in the collection.
            Console.ForegroundColor = ConsoleColor.Blue;
            Console.WriteLine("First AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();

            asne.MoveNext();
            Console.ForegroundColor = ConsoleColor.DarkBlue;
            Console.WriteLine("Second AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();
            //Return index in the collection to the beginning.
            asne.Reset();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for
 this certificate.");
        }
    }
}
C++
#using <System.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;

int main()
{
   
   //The following example demonstrates the usage of the AsnEncodedData
 classes.
   // Asn encoded data is read from the extensions of an X509 certificate.
   try
   {
      
      // Open the certificate store.
      X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser
 );
      store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly)
 );
      X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
      X509Certificate2Collection^ fcollection = dynamic_cast<X509Certificate2Collection^>(collection->Find(
 X509FindType::FindByTimeValid, DateTime::Now, false ));
      
      // Select one or more certificates to display extensions information.
      X509Certificate2Collection^ scollection = X509Certificate2UI::SelectFromCollection(fcollection,
 L"Certificate Select",L"Select certificates from the following list
 to get extension information on that certificate",X509SelectionFlag::MultiSelection);
      
      // Create a new AsnEncodedDataCollection object.
      AsnEncodedDataCollection^ asncoll = gcnew AsnEncodedDataCollection;
      for ( int i = 0; i < scollection->Count;
 i++ )
      {
         
         // Display certificate information.
         Console::ForegroundColor = ConsoleColor::Red;
         Console::WriteLine( L"Certificate name: {0}", scollection[i]->GetName()
 );
         Console::ResetColor();
         
         // Display extensions information.
         System::Collections::IEnumerator^ myEnum = scollection[i]->Extensions->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            X509Extension^ extension = safe_cast<X509Extension ^>(myEnum->Current);
            
            // Create an AsnEncodedData object using the extensions
 information.
            AsnEncodedData^ asndata = gcnew AsnEncodedData( extension->Oid,extension->RawData
 );
            Console::ForegroundColor = ConsoleColor::Green;
            Console::WriteLine( L"Extension type: {0}", extension->Oid->FriendlyName
 );
            Console::WriteLine( L"Oid value: {0}", asndata->Oid->Value
 );
            Console::WriteLine( L"Raw data length: {0} {1}", asndata->RawData->Length,
 Environment::NewLine );
            Console::ResetColor();
            Console::WriteLine( asndata->Format(true) );
            Console::WriteLine( Environment::NewLine );
            
            // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
            asncoll->Add( asndata );
         }

         Console::WriteLine( Environment::NewLine );

      }
      Console::ForegroundColor = ConsoleColor::Red;
      Console::WriteLine( L"Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll->Count, Environment::NewLine );
      Console::ResetColor();
      store->Close();
      
      //Create an enumerator for moving through the collection.
      AsnEncodedDataEnumerator^ asne = asncoll->GetEnumerator();
      
      //You must execute a MoveNext() to get to the first item in the
 collection.
      asne->MoveNext();
      
      // Write out AsnEncodedData in the collection.
      Console::ForegroundColor = ConsoleColor::Blue;
      Console::WriteLine( L"First AsnEncodedData in the collection:
 {0}", asne->Current->Format(true) );
      Console::ResetColor();
      asne->MoveNext();
      Console::ForegroundColor = ConsoleColor::DarkBlue;
      Console::WriteLine( L"Second AsnEncodedData in the
 collection: {0}", asne->Current->Format(true) );
      Console::ResetColor();
      
      //Return index in the collection to the beginning.
      asne->Reset();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( L"Information could not be written out for
 this certificate." );
   }

   return 1;
}
プラットフォームプラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0
参照参照
関連項目
AsnEncodedData クラス
AsnEncodedData メンバ
System.Security.Cryptography 名前空間

AsnEncodedData コンストラクタ (Oid, Byte[])

メモ : このコンストラクタは、.NET Framework version 2.0 で新しく追加されたものです。

Oid オブジェクトとバイト配列を使用して、AsnEncodedData クラスの新しいインスタンスを初期化します。

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

Visual Basic (宣言)
Public Sub New ( _
    oid As Oid, _
    rawData As Byte() _
)
Visual Basic (使用法)
Dim oid As Oid
Dim rawData As Byte()

Dim instance As New AsnEncodedData(oid,
 rawData)
C#
public AsnEncodedData (
    Oid oid,
    byte[] rawData
)
C++
public:
AsnEncodedData (
    Oid^ oid, 
    array<unsigned char>^ rawData
)
J#
public AsnEncodedData (
    Oid oid, 
    byte[] rawData
)
JScript
public function AsnEncodedData (
    oid : Oid, 
    rawData : byte[]
)

パラメータ

oid

Oid オブジェクト。

rawData

ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを格納するバイト配列。

使用例使用例

AsnEncodedData クラスを使用するコード例を次に示します。

Visual Basic
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates



Class AsnEncodedDataSample
   Shared msg As String
   Shared Sub Main()
      'The following example demonstrates the usage the AsnEncodedData
 classes.
      ' Asn encoded data is read from the extensions of an X509 certificate.
      Try
         ' Open the certificate store.
         Dim store As New
 X509Store("MY", StoreLocation.CurrentUser)
         store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
         Dim collection As X509Certificate2Collection
 = CType(store.Certificates, X509Certificate2Collection)
         Dim fcollection As X509Certificate2Collection
 = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False),
 X509Certificate2Collection)
         ' Select one or more certificates to display extensions information.
         Dim scollection As X509Certificate2Collection
 = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate
 Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
         
         ' Create a new AsnEncodedDataCollection object.
         Dim asncoll As New
 AsnEncodedDataCollection()
         Dim i As Integer
         For i = 0 To scollection.Count - 1
            ' Display certificate information.
        msg = "Certificate name: "& scollection(i).GetName()
            MsgBox(msg)

            ' Display extensions information.
            Dim extension As X509Extension
            For Each extension In
  scollection(i).Extensions
               ' Create an AsnEncodedData object using the extensions
 information.
               Dim asndata As New
 AsnEncodedData(extension.Oid, extension.RawData)
           msg = "Extension type: " & extension.Oid.FriendlyName
 & Environment.NewLine & "Oid value: " &
 asndata.Oid.Value _
        & Environment.NewLine & "Raw data length: "
 & asndata.RawData.Length & Environment.NewLine _
        & asndata.Format(True) & Environment.NewLine
               MsgBox(msg)
        
               ' Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
               asncoll.Add(asndata)
            Next extension
         Next i
     msg = "Number of AsnEncodedData items in the collection:
 " & asncoll.Count
         MsgBox(msg)         
         store.Close()

         'Create an enumerator for moving through the collection.
         Dim asne As AsnEncodedDataEnumerator
 = asncoll.GetEnumerator()
         'You must execute a MoveNext() to get to the first item in
 the collection.
         asne.MoveNext()
         ' Write out AsnEncodedData in the collection.
     msg = "First AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
    
         
         asne.MoveNext()
     msg = "Second AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
        
         'Return index in the collection to the beginning.
         asne.Reset()
      Catch 
         MsgBox("Information could not be written out for this
 certificate.")
      End Try
   End Sub 'Main
End Class 'AsnEncodedDataSample
C#
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

class AsnEncodedDataSample
{
    static void Main()
    {        
        //The following example demonstrates the usage the AsnEncodedData
 classes.
        // Asn encoded data is read from the extensions of an X509 certificate.
        try
        {
            // Open the certificate store.
            X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
            X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
            X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,
 DateTime.Now, false);
            // Select one or more certificates to display extensions
 information.
            X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection,
 "Certificate Select", "Select certificates from the following list
 to get extension information on that certificate", X509SelectionFlag.MultiSelection);

            // Create a new AsnEncodedDataCollection object.
            AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
            for (int i = 0; i < scollection.Count;
 i++)
            {
                // Display certificate information.
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
                Console.ResetColor();
                // Display extensions information.
                foreach (X509Extension extension in
 scollection[i].Extensions)
                {
                    // Create an AsnEncodedData object using the extensions
 information.
                    AsnEncodedData asndata = new AsnEncodedData(extension.Oid,
 extension.RawData);
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
                    Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
                    Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length,
 Environment.NewLine);
                    Console.ResetColor();
                    Console.WriteLine(asndata.Format(true));
                    Console.WriteLine(Environment.NewLine);
                    // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
                    asncoll.Add(asndata);
                }
                Console.WriteLine(Environment.NewLine);
            }
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll.Count, Environment.NewLine);
            Console.ResetColor();

            store.Close();
            //Create an enumerator for moving through the collection.
            AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
            //You must execute a MoveNext() to get to the first item
 in the collection.
            asne.MoveNext();
            // Write out AsnEncodedData in the collection.
            Console.ForegroundColor = ConsoleColor.Blue;
            Console.WriteLine("First AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();

            asne.MoveNext();
            Console.ForegroundColor = ConsoleColor.DarkBlue;
            Console.WriteLine("Second AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();
            //Return index in the collection to the beginning.
            asne.Reset();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for
 this certificate.");
        }
    }
}
C++
#using <System.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;

int main()
{
   
   //The following example demonstrates the usage of the AsnEncodedData
 classes.
   // Asn encoded data is read from the extensions of an X509 certificate.
   try
   {
      
      // Open the certificate store.
      X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser
 );
      store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly)
 );
      X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
      X509Certificate2Collection^ fcollection = dynamic_cast<X509Certificate2Collection^>(collection->Find(
 X509FindType::FindByTimeValid, DateTime::Now, false ));
      
      // Select one or more certificates to display extensions information.
      X509Certificate2Collection^ scollection = X509Certificate2UI::SelectFromCollection(fcollection,
 L"Certificate Select",L"Select certificates from the following list
 to get extension information on that certificate",X509SelectionFlag::MultiSelection);
      
      // Create a new AsnEncodedDataCollection object.
      AsnEncodedDataCollection^ asncoll = gcnew AsnEncodedDataCollection;
      for ( int i = 0; i < scollection->Count;
 i++ )
      {
         
         // Display certificate information.
         Console::ForegroundColor = ConsoleColor::Red;
         Console::WriteLine( L"Certificate name: {0}", scollection[i]->GetName()
 );
         Console::ResetColor();
         
         // Display extensions information.
         System::Collections::IEnumerator^ myEnum = scollection[i]->Extensions->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            X509Extension^ extension = safe_cast<X509Extension ^>(myEnum->Current);
            
            // Create an AsnEncodedData object using the extensions
 information.
            AsnEncodedData^ asndata = gcnew AsnEncodedData( extension->Oid,extension->RawData
 );
            Console::ForegroundColor = ConsoleColor::Green;
            Console::WriteLine( L"Extension type: {0}", extension->Oid->FriendlyName
 );
            Console::WriteLine( L"Oid value: {0}", asndata->Oid->Value
 );
            Console::WriteLine( L"Raw data length: {0} {1}", asndata->RawData->Length,
 Environment::NewLine );
            Console::ResetColor();
            Console::WriteLine( asndata->Format(true) );
            Console::WriteLine( Environment::NewLine );
            
            // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
            asncoll->Add( asndata );
         }

         Console::WriteLine( Environment::NewLine );

      }
      Console::ForegroundColor = ConsoleColor::Red;
      Console::WriteLine( L"Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll->Count, Environment::NewLine );
      Console::ResetColor();
      store->Close();
      
      //Create an enumerator for moving through the collection.
      AsnEncodedDataEnumerator^ asne = asncoll->GetEnumerator();
      
      //You must execute a MoveNext() to get to the first item in the
 collection.
      asne->MoveNext();
      
      // Write out AsnEncodedData in the collection.
      Console::ForegroundColor = ConsoleColor::Blue;
      Console::WriteLine( L"First AsnEncodedData in the collection:
 {0}", asne->Current->Format(true) );
      Console::ResetColor();
      asne->MoveNext();
      Console::ForegroundColor = ConsoleColor::DarkBlue;
      Console::WriteLine( L"Second AsnEncodedData in the
 collection: {0}", asne->Current->Format(true) );
      Console::ResetColor();
      
      //Return index in the collection to the beginning.
      asne->Reset();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( L"Information could not be written out for
 this certificate." );
   }

   return 1;
}
プラットフォームプラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0
参照参照
関連項目
AsnEncodedData クラス
AsnEncodedData メンバ
System.Security.Cryptography 名前空間

AsnEncodedData コンストラクタ (Byte[])

メモ : このコンストラクタは、.NET Framework version 2.0 で新しく追加されたものです。

バイト配列を使用して、AsnEncodedData クラスの新しいインスタンスを初期化します。

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

Visual Basic (宣言)
Public Sub New ( _
    rawData As Byte() _
)
Visual Basic (使用法)
Dim rawData As Byte()

Dim instance As New AsnEncodedData(rawData)
C#
public AsnEncodedData (
    byte[] rawData
)
C++
public:
AsnEncodedData (
    array<unsigned char>^ rawData
)
J#
public AsnEncodedData (
    byte[] rawData
)
JScript
public function AsnEncodedData (
    rawData : byte[]
)

パラメータ

rawData

ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを格納するバイト配列。

プラットフォームプラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0
参照参照
関連項目
AsnEncodedData クラス
AsnEncodedData メンバ
System.Security.Cryptography 名前空間

AsnEncodedData コンストラクタ

AsnEncodedData クラスの新しいインスタンスを初期化します。
オーバーロードの一覧オーバーロードの一覧

名前 説明
AsnEncodedData () AsnEncodedData クラスの新しいインスタンスを初期化します。
AsnEncodedData (AsnEncodedData) AsnEncodedData クラスの新しいインスタンスを、AsnEncodedData クラスのインスタンスを使用して初期化します。
AsnEncodedData (Byte[]) バイト配列を使用して、AsnEncodedData クラスの新しいインスタンスを初期化します。
AsnEncodedData (Oid, Byte[]) Oid オブジェクトとバイト配列を使用して、AsnEncodedData クラスの新しいインスタンスを初期化します。
AsnEncodedData (String, Byte[]) バイト配列を使用して、AsnEncodedData クラスの新しいインスタンスを初期化します。
参照参照

関連項目

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

AsnEncodedData コンストラクタ (String, Byte[])

メモ : このコンストラクタは、.NET Framework version 2.0 で新しく追加されたものです。

バイト配列を使用して、AsnEncodedData クラスの新しいインスタンスを初期化します。

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

Visual Basic (宣言)
Public Sub New ( _
    oid As String, _
    rawData As Byte() _
)
Visual Basic (使用法)
Dim oid As String
Dim rawData As Byte()

Dim instance As New AsnEncodedData(oid,
 rawData)
C#
public AsnEncodedData (
    string oid,
    byte[] rawData
)
C++
public:
AsnEncodedData (
    String^ oid, 
    array<unsigned char>^ rawData
)
J#
public AsnEncodedData (
    String oid, 
    byte[] rawData
)
JScript
public function AsnEncodedData (
    oid : String, 
    rawData : byte[]
)

パラメータ

oid

Oid 情報を表す文字列。

rawData

ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを格納するバイト配列。

使用例使用例

AsnEncodedData クラスを使用するコード例を次に示します。

Visual Basic
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates



Class AsnEncodedDataSample
   Shared msg As String
   Shared Sub Main()
      'The following example demonstrates the usage the AsnEncodedData
 classes.
      ' Asn encoded data is read from the extensions of an X509 certificate.
      Try
         ' Open the certificate store.
         Dim store As New
 X509Store("MY", StoreLocation.CurrentUser)
         store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
         Dim collection As X509Certificate2Collection
 = CType(store.Certificates, X509Certificate2Collection)
         Dim fcollection As X509Certificate2Collection
 = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False),
 X509Certificate2Collection)
         ' Select one or more certificates to display extensions information.
         Dim scollection As X509Certificate2Collection
 = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate
 Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
         
         ' Create a new AsnEncodedDataCollection object.
         Dim asncoll As New
 AsnEncodedDataCollection()
         Dim i As Integer
         For i = 0 To scollection.Count - 1
            ' Display certificate information.
        msg = "Certificate name: "& scollection(i).GetName()
            MsgBox(msg)

            ' Display extensions information.
            Dim extension As X509Extension
            For Each extension In
  scollection(i).Extensions
               ' Create an AsnEncodedData object using the extensions
 information.
               Dim asndata As New
 AsnEncodedData(extension.Oid, extension.RawData)
           msg = "Extension type: " & extension.Oid.FriendlyName
 & Environment.NewLine & "Oid value: " &
 asndata.Oid.Value _
        & Environment.NewLine & "Raw data length: "
 & asndata.RawData.Length & Environment.NewLine _
        & asndata.Format(True) & Environment.NewLine
               MsgBox(msg)
        
               ' Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
               asncoll.Add(asndata)
            Next extension
         Next i
     msg = "Number of AsnEncodedData items in the collection:
 " & asncoll.Count
         MsgBox(msg)         
         store.Close()

         'Create an enumerator for moving through the collection.
         Dim asne As AsnEncodedDataEnumerator
 = asncoll.GetEnumerator()
         'You must execute a MoveNext() to get to the first item in
 the collection.
         asne.MoveNext()
         ' Write out AsnEncodedData in the collection.
     msg = "First AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
    
         
         asne.MoveNext()
     msg = "Second AsnEncodedData in the collection: "
 & asne.Current.Format(True)
     MsgBox(msg)
        
         'Return index in the collection to the beginning.
         asne.Reset()
      Catch 
         MsgBox("Information could not be written out for this
 certificate.")
      End Try
   End Sub 'Main
End Class 'AsnEncodedDataSample
C#
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

class AsnEncodedDataSample
{
    static void Main()
    {        
        //The following example demonstrates the usage the AsnEncodedData
 classes.
        // Asn encoded data is read from the extensions of an X509 certificate.
        try
        {
            // Open the certificate store.
            X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
            X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
            X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,
 DateTime.Now, false);
            // Select one or more certificates to display extensions
 information.
            X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection,
 "Certificate Select", "Select certificates from the following list
 to get extension information on that certificate", X509SelectionFlag.MultiSelection);

            // Create a new AsnEncodedDataCollection object.
            AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
            for (int i = 0; i < scollection.Count;
 i++)
            {
                // Display certificate information.
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
                Console.ResetColor();
                // Display extensions information.
                foreach (X509Extension extension in
 scollection[i].Extensions)
                {
                    // Create an AsnEncodedData object using the extensions
 information.
                    AsnEncodedData asndata = new AsnEncodedData(extension.Oid,
 extension.RawData);
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
                    Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
                    Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length,
 Environment.NewLine);
                    Console.ResetColor();
                    Console.WriteLine(asndata.Format(true));
                    Console.WriteLine(Environment.NewLine);
                    // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
                    asncoll.Add(asndata);
                }
                Console.WriteLine(Environment.NewLine);
            }
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll.Count, Environment.NewLine);
            Console.ResetColor();

            store.Close();
            //Create an enumerator for moving through the collection.
            AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
            //You must execute a MoveNext() to get to the first item
 in the collection.
            asne.MoveNext();
            // Write out AsnEncodedData in the collection.
            Console.ForegroundColor = ConsoleColor.Blue;
            Console.WriteLine("First AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();

            asne.MoveNext();
            Console.ForegroundColor = ConsoleColor.DarkBlue;
            Console.WriteLine("Second AsnEncodedData in the
 collection: {0}", asne.Current.Format(true));
            Console.ResetColor();
            //Return index in the collection to the beginning.
            asne.Reset();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for
 this certificate.");
        }
    }
}
C++
#using <System.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;

int main()
{
   
   //The following example demonstrates the usage of the AsnEncodedData
 classes.
   // Asn encoded data is read from the extensions of an X509 certificate.
   try
   {
      
      // Open the certificate store.
      X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser
 );
      store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly)
 );
      X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
      X509Certificate2Collection^ fcollection = dynamic_cast<X509Certificate2Collection^>(collection->Find(
 X509FindType::FindByTimeValid, DateTime::Now, false ));
      
      // Select one or more certificates to display extensions information.
      X509Certificate2Collection^ scollection = X509Certificate2UI::SelectFromCollection(fcollection,
 L"Certificate Select",L"Select certificates from the following list
 to get extension information on that certificate",X509SelectionFlag::MultiSelection);
      
      // Create a new AsnEncodedDataCollection object.
      AsnEncodedDataCollection^ asncoll = gcnew AsnEncodedDataCollection;
      for ( int i = 0; i < scollection->Count;
 i++ )
      {
         
         // Display certificate information.
         Console::ForegroundColor = ConsoleColor::Red;
         Console::WriteLine( L"Certificate name: {0}", scollection[i]->GetName()
 );
         Console::ResetColor();
         
         // Display extensions information.
         System::Collections::IEnumerator^ myEnum = scollection[i]->Extensions->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            X509Extension^ extension = safe_cast<X509Extension ^>(myEnum->Current);
            
            // Create an AsnEncodedData object using the extensions
 information.
            AsnEncodedData^ asndata = gcnew AsnEncodedData( extension->Oid,extension->RawData
 );
            Console::ForegroundColor = ConsoleColor::Green;
            Console::WriteLine( L"Extension type: {0}", extension->Oid->FriendlyName
 );
            Console::WriteLine( L"Oid value: {0}", asndata->Oid->Value
 );
            Console::WriteLine( L"Raw data length: {0} {1}", asndata->RawData->Length,
 Environment::NewLine );
            Console::ResetColor();
            Console::WriteLine( asndata->Format(true) );
            Console::WriteLine( Environment::NewLine );
            
            // Add the AsnEncodedData object to the AsnEncodedDataCollection
 object.
            asncoll->Add( asndata );
         }

         Console::WriteLine( Environment::NewLine );

      }
      Console::ForegroundColor = ConsoleColor::Red;
      Console::WriteLine( L"Number of AsnEncodedData items in
 the collection: {0} {1}", asncoll->Count, Environment::NewLine );
      Console::ResetColor();
      store->Close();
      
      //Create an enumerator for moving through the collection.
      AsnEncodedDataEnumerator^ asne = asncoll->GetEnumerator();
      
      //You must execute a MoveNext() to get to the first item in the
 collection.
      asne->MoveNext();
      
      // Write out AsnEncodedData in the collection.
      Console::ForegroundColor = ConsoleColor::Blue;
      Console::WriteLine( L"First AsnEncodedData in the collection:
 {0}", asne->Current->Format(true) );
      Console::ResetColor();
      asne->MoveNext();
      Console::ForegroundColor = ConsoleColor::DarkBlue;
      Console::WriteLine( L"Second AsnEncodedData in the
 collection: {0}", asne->Current->Format(true) );
      Console::ResetColor();
      
      //Return index in the collection to the beginning.
      asne->Reset();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( L"Information could not be written out for
 this certificate." );
   }

   return 1;
}
プラットフォームプラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0
参照参照
関連項目
AsnEncodedData クラス
AsnEncodedData メンバ
System.Security.Cryptography 名前空間

AsnEncodedData プロパティ


パブリック プロパティパブリック プロパティ

  名前 説明
パブリック プロパティ Oid AsnEncodedData オブジェクトの Oid 値を取得または設定します。
パブリック プロパティ RawData ASN.1 (Abstract Syntax Notation One) でエンコードされたデータをバイト配列表現で取得または設定します。
参照参照

関連項目

AsnEncodedData クラス
System.Security.Cryptography 名前空間

AsnEncodedData メソッド


パブリック メソッドパブリック メソッド

( プロテクト メソッド も参照)
  名前 説明
パブリック メソッド CopyFrom AsnEncodedData オブジェクトの情報をコピーします。
パブリック メソッド 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。)
パブリック メソッド Format ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを、文字列として書式設定して返します。
パブリック メソッド 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。)
パブリック メソッド 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。)
パブリック メソッド 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。)
パブリック メソッド ToString  現在の Object を表す String を返します。 ( Object から継承されます。)
プロテクト メソッドプロテクト メソッド
  名前 説明
プロテクト メソッド 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。)
プロテクト メソッド 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。)
参照参照

関連項目

AsnEncodedData クラス
System.Security.Cryptography 名前空間

AsnEncodedData メンバ

ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを表します。

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


パブリック コンストラクタパブリック コンストラクタ
( プロテクト コンストラクタ も参照)
  名前 説明
パブリック メソッド AsnEncodedData オーバーロードされます。 AsnEncodedData クラスの新しいインスタンスを初期化します。
プロテクト コンストラクタプロテクト コンストラクタ
  名前 説明
プロテクト メソッド AsnEncodedData オーバーロードされます。 AsnEncodedData クラスの新しいインスタンスを初期化します。
パブリック プロパティパブリック プロパティ
  名前 説明
パブリック プロパティ Oid AsnEncodedData オブジェクトの Oid 値を取得または設定します。
パブリック プロパティ RawData ASN.1 (Abstract Syntax Notation One) でエンコードされたデータをバイト配列表現で取得または設定します。
パブリック メソッドパブリック メソッド
( プロテクト メソッド も参照)
  名前 説明
パブリック メソッド CopyFrom AsnEncodedData オブジェクトの情報をコピーします。
パブリック メソッド 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。)
パブリック メソッド Format ASN.1 (Abstract Syntax Notation One) でエンコードされたデータを、文字列として書式設定して返します。
パブリック メソッド 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。)
パブリック メソッド 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。)
パブリック メソッド 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。)
パブリック メソッド ToString  現在の Object を表す String を返します。 (Object から継承されます。)
プロテクト メソッドプロテクト メソッド
  名前 説明
プロテクト メソッド 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。)
プロテクト メソッド 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。)
参照参照

関連項目

AsnEncodedData クラス
System.Security.Cryptography 名前空間

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AsnEncodedDataのお隣キーワード

ASCIIEncoding.IsSingleByte プロパティ

Array クラス

Array プロパティ

Array メソッド

Array メンバ

ArrowDirection 列挙体

AsnEncodedData

AsnEncodedData.CopyFrom メソッド

AsnEncodedDataCollection クラス

AsnEncodedDataCollection コンストラクタ

AsnEncodedDataCollection プロパティ

AsnEncodedDataCollection メソッド

AsnEncodedDataCollection メンバ

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