CryptoAPITransform

.NET Framework クラス ライブラリ リファレンス

CryptoAPITransform クラス

データの暗号変換を実行します。このクラスは継承できません。

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

Visual Basic (宣言)

<ComVisibleAttribute(True)> _
Public NotInheritable Class
 CryptoAPITransform
    Implements ICryptoTransform, IDisposable

Visual Basic (使用法)

Dim instance As CryptoAPITransform

C#

[ComVisibleAttribute(true)] 
public sealed class CryptoAPITransform : ICryptoTransform,
 IDisposable

C++

[ComVisibleAttribute(true)] 
public ref class CryptoAPITransform sealed
 : ICryptoTransform, IDisposable

J#

/** @attribute ComVisibleAttribute(true) */ 
public final class CryptoAPITransform implements
 ICryptoTransform, IDisposable

JScript

ComVisibleAttribute(true) 
public final class CryptoAPITransform implements
 ICryptoTransform, IDisposable

使用例

CryptoAPITransform クラスのメンバを使用する方法を次のコード例に示します。

Visual Basic

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

Public Class Form1
    Inherits System.Windows.Forms.Form

    ' Use a public service provider for encryption and decryption.
    Dim des As New DESCryptoServiceProvider

    ' 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 = ""

        Dim message As String
 = "01234567890123456789"
        Dim sourceBytes() As Byte
 = Encoding.ASCII.GetBytes(message)
        tbxOutput.AppendText("** Phrase to be encoded: "
 + message + vbCrLf)

        Dim encodedBytes() As Byte
 = EncodeBytes(sourceBytes)
        tbxOutput.AppendText("** Phrase after encoding: "
 + _
            Encoding.ASCII.GetString(encodedBytes) + vbCrLf)

        Dim decodedBytes() As Byte
 = DecodeBytes(encodedBytes)
        tbxOutput.AppendText("** Phrase after decoding: "
 + _
            Encoding.ASCII.GetString(decodedBytes) + vbCrLf)

        tbxOutput.AppendText(vbCrLf + "Sample ended successfully;
 " + _
            "press Enter to continue.")
        tbxOutput.Cursor = Cursors.Default
    End Sub

    ' Encode the specified byte array by using CryptoAPITranform.
    Private Function EncodeBytes(ByVal
 sourceBytes() As Byte) As
 Byte()
        Dim currentPosition As Int16 = 0
        Dim targetBytes(1024) As Byte
        Dim sourceByteLength As Integer
 = sourceBytes.Length

        ' Create a DES encryptor from this instance to perform encryption.
        Dim cryptoTransform As CryptoAPITransform
        cryptoTransform = CType(DES.CreateEncryptor(), CryptoAPITransform)

        ' Retrieve the block size to read the bytes.
        Dim inputBlockSize As Integer
 = cryptoTransform.InputBlockSize

        ' Retrieve the key handle.
        Dim keyHandle As IntPtr = cryptoTransform.KeyHandle

        ' Retrieve the block size to write the bytes.
        Dim outputBlockSize As Integer
 = cryptoTransform.OutputBlockSize

        Try
            ' Determine if multiple blocks can be transformed.
            If (cryptoTransform.CanTransformMultipleBlocks) Then
                Dim numBytesRead As Int16 =
 0
                While (sourceByteLength - currentPosition >=
 inputBlockSize)
                    ' Transform the bytes from currentposition in the
 
                    ' sourceBytes array, writing the bytes to the targetBytes
                    ' array.
                    numBytesRead = cryptoTransform.TransformBlock( _
                        sourceBytes, _
                        currentPosition, _
                        inputBlockSize, _
                        targetBytes, _
                        currentPosition)

                    ' Advance the current position in the sourceBytes
 array.
                    currentPosition += numBytesRead
                End While

                ' Transform the final block of bytes.
                Dim finalBytes() As Byte
                finalBytes = cryptoTransform.TransformFinalBlock( _
                    sourceBytes, _
                    currentPosition, _
                    sourceByteLength - currentPosition)

                ' Copy the contents of the finalBytes array to the targetBytes
                ' array.
                finalBytes.CopyTo(targetBytes, currentPosition)
            End If

        Catch ex As Exception
            tbxOutput.AppendText("Caught unexpected exception:"
 + _
                ex.ToString() + vbCrLf)

        End Try

        ' Determine if the current transform can be reused.
        If (Not cryptoTransform.CanReuseTransform)
 Then

            ' Free up any used resources.
            cryptoTransform.Clear()
        End If

        ' Trim the extra bytes in the array that were not used.
        Return TrimArray(targetBytes)
    End Function

    ' Decode the specified byte array using CryptoAPITranform.
    Private Function DecodeBytes(ByVal
 sourceBytes() As Byte) As
 Byte()

        Dim currentPosition As Int16 = 0
        Dim targetBytes(1024) As Byte
        Dim sourceByteLength As Integer
 = sourceBytes.Length

        ' Create a DES decryptor from this instance to perform decryption.
        Dim cryptoTransform As CryptoAPITransform
        cryptoTransform = CType(DES.CreateDecryptor(), CryptoAPITransform)

        Dim inputBlockSize As Integer
 = cryptoTransform.InputBlockSize

        Try
            ' Determine if multiple blocks can be transformed.
            If (cryptoTransform.CanTransformMultipleBlocks) Then

                Dim numBytesRead As Int16 =
 0
                While (sourceByteLength - currentPosition >=
 inputBlockSize)

                    ' Transform the bytes from currentPosition in the
                    ' sourceBytes array, writing the bytes to the targetBytes
                    ' array.
                    numBytesRead = cryptoTransform.TransformBlock( _
                        sourceBytes, _
                        currentPosition, _
                        inputBlockSize, _
                        targetBytes, _
                        currentPosition)

                    ' Advance the current position in the source array.
                    currentPosition += numBytesRead
                End While

                ' Transform the final block of bytes.
                Dim finalBytes() As Byte
                finalBytes = cryptoTransform.TransformFinalBlock( _
                    sourceBytes, _
                    currentPosition, _
                    sourceByteLength - currentPosition)

                ' Copy the contents of the finalBytes array to the targetBytes
                ' array.
                finalBytes.CopyTo(targetBytes, currentPosition)
            End If

        Catch ex As Exception
            tbxOutput.AppendText("Caught unexpected exception:"
 + _
                ex.ToString() + vbCrLf)

        End Try

        ' Strip out the second block of bytes.
        Array.Copy(targetBytes, (inputBlockSize * 2), targetBytes, inputBlockSize,
 targetBytes.Length - (inputBlockSize * 2))

        ' Trim the extra bytes in the array that were not used.
        Return TrimArray(targetBytes)
    End Function

    ' Resize the dimensions of the array to a size that contains only
 valid
    ' bytes.
    Private Function TrimArray(ByVal
 targetArray() As Byte) As
 Byte()

        Dim enum1 As IEnumerator = targetArray.GetEnumerator()
        Dim i As Int16 = 0

        While (enum1.MoveNext())
            If (enum1.Current.ToString().Equals("0"))
 Then
                Exit While
            End If

            i += 1
        End While

        ' Create a new array with the number of valid bytes.
        Dim returnedArray(i - 1) As Byte
        For j As Int16 = 0 To
 i - 1 Step 1
            returnedArray(j) = targetArray(j)
        Next

        Return returnedArray
    End Function


    ' 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 = "CryptoAPITransform"
        Me.Panel2.ResumeLayout(False)
        Me.Panel1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region
End Class
'
' This sample produces the following output:
'
' ** Phrase to be encoded: 01234567890123456789
' ** Phrase after encoding: Eaa0$\iv\oXgS
' ** Phrase after decoding: 01234567890123456789
' 
' Sample ended successfully; press Enter to continue.

C#

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

class Members
{
    // Use a public service provider for encryption and decryption.
    static DESCryptoServiceProvider des = new
 DESCryptoServiceProvider();

    [STAThread]
    static void Main(string[]
 args)
    {
        string message = "012345678901234567890";
        byte[] sourceBytes = Encoding.ASCII.GetBytes(message);
        Console.WriteLine("** Phrase to be encoded: " + message);

        byte[] encodedBytes = EncodeBytes(sourceBytes);
        Console.WriteLine("** Phrase after encoding: " +
            Encoding.ASCII.GetString(encodedBytes));

        byte[] decodedBytes = DecodeBytes(encodedBytes);
        Console.WriteLine("** Phrase after decoding: " +
            Encoding.ASCII.GetString(decodedBytes));

        Console.WriteLine("Sample ended successfully; " +
            "press Enter to continue.");
        Console.ReadLine();
    }

    // Encode the specified byte array by using CryptoAPITranform.
    private static byte[] EncodeBytes(byte[]
 sourceBytes)
    {
        int currentPosition = 0;
        byte[] targetBytes = new byte[1024];
        int sourceByteLength = sourceBytes.Length;

        // Create a DES encryptor from this instance to perform encryption.
        CryptoAPITransform cryptoTransform =
            (CryptoAPITransform)des.CreateEncryptor();

        // Retrieve the block size to read the bytes.
        int inputBlockSize = cryptoTransform.InputBlockSize;

        // Retrieve the key handle.
        IntPtr keyHandle = cryptoTransform.KeyHandle;

        // Retrieve the block size to write the bytes.
        int outputBlockSize = cryptoTransform.OutputBlockSize;

        try
        {
            // Determine if multiple blocks can be transformed.
            if (cryptoTransform.CanTransformMultipleBlocks)
            {
                int numBytesRead = 0;
                while (sourceByteLength - currentPosition >=
 inputBlockSize)
                {
                    // Transform the bytes from currentPosition in the
                    // sourceBytes array, writing the bytes to the targetBytes
                    // array.
                    numBytesRead = cryptoTransform.TransformBlock(
                        sourceBytes,
                        currentPosition,
                        inputBlockSize,
                        targetBytes,
                        currentPosition);

                    // Advance the current position in the sourceBytes
 array.
                    currentPosition += numBytesRead;
                }

                // Transform the final block of bytes.
                byte[] finalBytes = cryptoTransform.TransformFinalBlock(
                    sourceBytes,
                    currentPosition,
                    sourceByteLength - currentPosition);

                // Copy the contents of the finalBytes array to the
                // targetBytes array.
                finalBytes.CopyTo(targetBytes, currentPosition);
            }

        }
        catch (Exception ex)
        {
            Console.WriteLine("Caught unexpected exception:" + ex.ToString());
        }

        // Determine if the current transform can be reused.
        if (!cryptoTransform.CanReuseTransform)
        {
            // Free up any used resources.
            cryptoTransform.Clear();
        }

        // Trim the extra bytes in the array that were not used.
        return TrimArray(targetBytes);
    }

    // Decode the specified byte array using CryptoAPITranform.
    private static byte[] DecodeBytes(byte[]
 sourceBytes)
    {
        byte[] targetBytes = new byte[1024];
        int currentPosition = 0;

        // Create a DES decryptor from this instance to perform decryption.
        CryptoAPITransform cryptoTransform =
            (CryptoAPITransform)des.CreateDecryptor();

        int inputBlockSize = cryptoTransform.InputBlockSize;
        int sourceByteLength = sourceBytes.Length;

        try
        {
            int numBytesRead = 0;
            while (sourceByteLength - currentPosition >= inputBlockSize)
            {
                // Transform the bytes from current position in the
 
                // sourceBytes array, writing the bytes to the targetBytes
                // array.
                numBytesRead = cryptoTransform.TransformBlock(
                    sourceBytes,
                    currentPosition,
                    inputBlockSize,
                    targetBytes,
                    currentPosition);

                // Advance the current position in the source array.
                currentPosition += numBytesRead;
            }

            // Transform the final block of bytes.
            byte[] finalBytes = cryptoTransform.TransformFinalBlock(
                sourceBytes,
                currentPosition,
                sourceByteLength - currentPosition);

            // Copy the contents of the finalBytes array to the targetBytes
            // array.
            finalBytes.CopyTo(targetBytes, currentPosition);
        }
        catch (Exception ex)
        {
            Console.WriteLine("Caught unexpected exception:" + ex.ToString());
        }

        // Strip out the second block of bytes.
        Array.Copy(targetBytes, (inputBlockSize * 2), targetBytes, inputBlockSize,
 targetBytes.Length - (inputBlockSize * 2));

        // Trim the extra bytes in the array that were not used.
        return TrimArray(targetBytes);
    }

    // Resize the dimensions of the array to a size that contains only
 valid
    // bytes.
    private static byte[] TrimArray(byte[]
 targetArray)
    {
        IEnumerator enum1 = targetArray.GetEnumerator();
        int i = 0;

        while (enum1.MoveNext())
        {
            if (enum1.Current.ToString().Equals("0"))
            {
                break;
            }
            i++;
        }

        // Create a new array with the number of valid bytes.
        byte[] returnedArray = new byte[i];
        for (int j = 0; j < i; j++)
        {
            returnedArray[j] = targetArray[j];
        }

        return returnedArray;
    }
}
//
// This sample produces the following output:
//
// ** Phrase to be encoded: 012345678901234567890
// ** Phrase after encoding: AIGC(+b7X?^djAU?15ve?o
// ** Phrase after decoding: 012345678901234567890
// Sample ended successfully; press Enter to continue.

C++

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Collections;
using namespace System::Text;

ref class Members
{
private:

   // Use a public service provider for encryption and decryption.
   static DESCryptoServiceProvider^ des = gcnew DESCryptoServiceProvider;

public:
   [STAThread]
   static void Main()
   {
      String^ message = L"012345678901234567890";
      array<Byte>^sourceBytes = Encoding::ASCII->GetBytes( message );
      Console::WriteLine( L"** Phrase to be encoded: {0}", message );
      array<Byte>^encodedBytes = EncodeBytes( sourceBytes );
      Console::WriteLine( L"** Phrase after encoding: {0}",
         Encoding::ASCII->GetString( encodedBytes ) );
      array<Byte>^decodedBytes = DecodeBytes( encodedBytes );
      Console::WriteLine( L"** Phrase after decoding: {0}",
         Encoding::ASCII->GetString( decodedBytes ) );
      Console::WriteLine( L"Sample ended successfully; "
      L"press Enter to continue." );
      Console::ReadLine();
   }

private:
   // Encode the specified byte array by using CryptoAPITranform.
   static array<Byte>^ EncodeBytes( array<Byte>^sourceBytes
 )
   {
      int currentPosition = 0;
      array<Byte>^targetBytes = gcnew array<Byte>(1024);
      int sourceByteLength = sourceBytes->Length;
      
      // Create a DES encryptor from this instance to perform encryption.
      CryptoAPITransform^ cryptoTransform =
         static_cast<CryptoAPITransform^>(des->CreateEncryptor());
      
      // Retrieve the block size to read the bytes.
      int inputBlockSize = cryptoTransform->InputBlockSize;

      // Retrieve the key handle.
      IntPtr keyHandle = cryptoTransform->KeyHandle;

      // Retrieve the block size to write the bytes.
      int outputBlockSize = cryptoTransform->OutputBlockSize;

      try
      {
         // Determine if multiple blocks can be transformed.
         if ( cryptoTransform->CanTransformMultipleBlocks )
         {
            int numBytesRead = 0;
            while ( sourceByteLength - currentPosition >= inputBlockSize
 )
            {
               // Transform the bytes from currentPosition in the
               // sourceBytes array, writing the bytes to the targetBytes
               // array.
               numBytesRead = cryptoTransform->TransformBlock(
                  sourceBytes, currentPosition, inputBlockSize,
                  targetBytes, currentPosition );
               // Advance the current position in the sourceBytes array.
               currentPosition += numBytesRead;
            }
            
            // Transform the final block of bytes.
            array<Byte>^finalBytes = cryptoTransform->TransformFinalBlock(
               sourceBytes, currentPosition, sourceByteLength - currentPosition );

            // Copy the contents of the finalBytes array to the
            // targetBytes array.
            finalBytes->CopyTo( targetBytes, currentPosition );
         }
      }
      catch ( Exception^ ex ) 
      {
         Console::WriteLine( L"Caught unexpected exception:{0}", ex );
      }
      
      // Determine if the current transform can be reused.
      if (  !cryptoTransform->CanReuseTransform )
      {
         // Free up any used resources.
         cryptoTransform->Clear();
      }

      // Trim the extra bytes in the array that were not used.
      return TrimArray( targetBytes );
   }

   // Decode the specified byte array using CryptoAPITranform.
   static array<Byte>^ DecodeBytes( array<Byte>^sourceBytes
 )
   {
      array<Byte>^targetBytes = gcnew array<Byte>(1024);
      int currentPosition = 0;
      
      // Create a DES decryptor from this instance to perform decryption.
      CryptoAPITransform^ cryptoTransform =
         static_cast<CryptoAPITransform^>(des->CreateDecryptor());
      int inputBlockSize = cryptoTransform->InputBlockSize;
      int sourceByteLength = sourceBytes->Length;
      try
      {
         int numBytesRead = 0;
         while ( sourceByteLength - currentPosition >= inputBlockSize
 )
         {
            // Transform the bytes from currentposition in the 
            // sourceBytes array, writing the bytes to the targetBytes
            // array.
            numBytesRead = cryptoTransform->TransformBlock(
               sourceBytes, currentPosition, inputBlockSize,
               targetBytes, currentPosition );
            
            // Advance the current position in the source array.
            currentPosition += numBytesRead;
         }
         
         // Transform the final block of bytes.
         array<Byte>^finalBytes = cryptoTransform->TransformFinalBlock(
            sourceBytes, currentPosition, sourceByteLength - currentPosition );
         
         // Copy the contents of the finalBytes array to the targetBytes
         // array.
         finalBytes->CopyTo( targetBytes, currentPosition );
      }
      catch ( Exception^ ex ) 
      {
         Console::WriteLine( L"Caught unexpected exception:{0}", ex );
      }

      // Strip out the second block of bytes.
      Array::Copy(targetBytes, (inputBlockSize * 2), targetBytes, inputBlockSize,
 targetBytes->Length - (inputBlockSize * 2));

      
      // Trim the extra bytes in the array that were not used.
      return TrimArray( targetBytes );
   }

   // Resize the dimensions of the array to a size that contains only
 valid
   // bytes.
   static array<Byte>^ TrimArray( array<Byte>^targetArray
 )
   {
      IEnumerator^ enum1 = targetArray->GetEnumerator();
      int i = 0;
      while ( enum1->MoveNext() )
      {
         if ( enum1->Current->ToString()->Equals( L"0"
 ) )
         {
            break;
         }
         i++;
      }

      // Create a new array with the number of valid bytes.
      array<Byte>^returnedArray = gcnew array<Byte>(i);
      for ( int j = 0; j < i; j++ )
      {
         returnedArray[ j ] = targetArray[ j ];
      }
      return returnedArray;
   }
};

int main()
{
   Members::Main();
}

//
// This sample produces the following output:
//
// ** Phrase to be encoded: 012345678901234567890
// ** Phrase after encoding: AIGC(+b7X?^djAU?15ve?o
// ** Phrase after decoding: 012345678901234567890
// Sample ended successfully; press Enter to continue.

継承階層

System.Object
  System.Security.Cryptography.CryptoAPITransform

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

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、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0

参照

関連項目
CryptoAPITransform メンバ
System.Security.Cryptography 名前空間
その他の技術情報
暗号サービス

CryptoAPITransform プロパティ

パブリック プロパティ

	名前	説明
	OutputBlockSize	出力ブロック サイズを取得します。

参照

関連項目

CryptoAPITransform クラス
System.Security.Cryptography 名前空間

その他の技術情報

暗号サービス

CryptoAPITransform メソッド

パブリック メソッド

	名前	説明
	Clear	CryptoAPITransform メソッドによって使用されているすべてのリソースを解放します。
	Equals	オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 ( Object から継承されます。)
	GetHashCode	特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 ( Object から継承されます。)
	GetType	現在のインスタンスの Type を取得します。 ( Object から継承されます。)
	ReferenceEquals	指定した複数の Object インスタンスが同一かどうかを判断します。 ( Object から継承されます。)
	Reset	別の暗号化または復号化に使用できるように、CryptoAPITransform の内部状態をリセットします。
	ToString	現在の Object を表す String を返します。 ( Object から継承されます。)
	TransformBlock	入力バイト配列の指定した領域の変換を計算し、結果として得られる変換を出力バイト配列の指定した領域にコピーします。
	TransformFinalBlock	指定したバイト配列の指定した領域の変換を計算します。

明示的インターフェイスの実装

	名前	説明
	System.IDisposable.Dispose	アンマネージ リソースの解放およびリセットに関連付けられているアプリケーション定義のタスクを実行します。

参照

関連項目

CryptoAPITransform クラス
System.Security.Cryptography 名前空間

その他の技術情報

暗号サービス

CryptoAPITransform メンバ

データの暗号変換を実行します。このクラスは継承できません。

CryptoAPITransform 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 プロパティ

	名前	説明
	OutputBlockSize	出力ブロック サイズを取得します。

パブリック メソッド

	名前	説明
	Clear	CryptoAPITransform メソッドによって使用されているすべてのリソースを解放します。
	Equals	オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 (Object から継承されます。)
	GetHashCode	特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 (Object から継承されます。)
	GetType	現在のインスタンスの Type を取得します。 (Object から継承されます。)
	ReferenceEquals	指定した複数の Object インスタンスが同一かどうかを判断します。 (Object から継承されます。)
	Reset	別の暗号化または復号化に使用できるように、CryptoAPITransform の内部状態をリセットします。
	ToString	現在の Object を表す String を返します。 (Object から継承されます。)
	TransformBlock	入力バイト配列の指定した領域の変換を計算し、結果として得られる変換を出力バイト配列の指定した領域にコピーします。
	TransformFinalBlock	指定したバイト配列の指定した領域の変換を計算します。

明示的インターフェイスの実装

	名前	説明
	System.IDisposable.Dispose	アンマネージ リソースの解放およびリセットに関連付けられているアプリケーション定義のタスクを実行します。

参照

関連項目

CryptoAPITransform クラス
System.Security.Cryptography 名前空間

その他の技術情報

暗号サービス