RSACryptoServiceProviderとは? わかりやすく解説

RSACryptoServiceProvider クラス

暗号サービス プロバイダ (CSP : Cryptographic Service Provider) によって提供されRSA アルゴリズムの実装使用して非対称暗号化および復号化実行します。このクラス継承できません。

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

<ComVisibleAttribute(True)> _
Public NotInheritable Class
 RSACryptoServiceProvider
    Inherits RSA
    Implements ICspAsymmetricAlgorithm
Dim instance As RSACryptoServiceProvider
[ComVisibleAttribute(true)] 
public sealed class RSACryptoServiceProvider
 : RSA, ICspAsymmetricAlgorithm
[ComVisibleAttribute(true)] 
public ref class RSACryptoServiceProvider sealed
 : public RSA, ICspAsymmetricAlgorithm
/** @attribute ComVisibleAttribute(true) */ 
public final class RSACryptoServiceProvider
 extends RSA implements ICspAsymmetricAlgorithm
ComVisibleAttribute(true) 
public final class RSACryptoServiceProvider
 extends RSA implements ICspAsymmetricAlgorithm
解説解説
使用例使用例

RSACryptoServiceProvider クラス使用して文字列バイト配列暗号化し、そのバイト文字列復号化するコード例次に示します

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

 _

Class RSACSPSample


    Shared Sub Main()
        Try
            'Create a UnicodeEncoder to convert between byte array and
 string.
            Dim ByteConverter As New
 UnicodeEncoding()

            'Create byte arrays to hold original, encrypted, and decrypted
 data.
            Dim dataToEncrypt As Byte()
 = ByteConverter.GetBytes("Data to Encrypt")
            Dim encryptedData() As Byte
            Dim decryptedData() As Byte

            'Create a new instance of RSACryptoServiceProvider to generate
            'public and private key data.
            Dim RSA As New
 RSACryptoServiceProvider()

            'Pass the data to ENCRYPT, the public key information 
            '(using RSACryptoServiceProvider.ExportParameters(false)
,
            'and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, RSA.ExportParameters(False),
 False)

            'Pass the data to DECRYPT, the private key information 
            '(using RSACryptoServiceProvider.ExportParameters(true)
,
            'and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, RSA.ExportParameters(True),
 False)

            'Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}",
 ByteConverter.GetString(decryptedData))
        Catch e As ArgumentNullException
            'Catch this exception in case the encryption did
            'not succeed.
            Console.WriteLine("Encryption failed.")
        End Try
    End Sub


    Public Shared Function
 RSAEncrypt(ByVal DataToEncrypt() As Byte,
 ByVal RSAKeyInfo As RSAParameters, ByVal DoOAEPPadding As Boolean)
 As Byte()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSA As New
 RSACryptoServiceProvider()

            'Import the RSA Key information. This only needs
            'toinclude the public key information.
            RSA.ImportParameters(RSAKeyInfo)

            'Encrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSA.Encrypt(DataToEncrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.Message)

            Return Nothing
        End Try
    End Function


    Public Shared Function
 RSADecrypt(ByVal DataToDecrypt() As Byte,
 ByVal RSAKeyInfo As RSAParameters, ByVal DoOAEPPadding As Boolean)
 As Byte()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSA As New
 RSACryptoServiceProvider()

            'Import the RSA Key information. This needs
            'to include the private key information.
            RSA.ImportParameters(RSAKeyInfo)

            'Decrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSA.Decrypt(DataToDecrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.ToString())

            Return Nothing
        End Try
    End Function
End Class
using System;
using System.Security.Cryptography;
using System.Text;

class RSACSPSample
{

    static void Main()
    {
        try
        {
            //Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding ByteConverter = new UnicodeEncoding();

            //Create byte arrays to hold original, encrypted, and decrypted
 data.
            byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
            byte[] encryptedData;
            byte[] decryptedData;
            
            //Create a new instance of RSACryptoServiceProvider to generate
            //public and private key data.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //Pass the data to ENCRYPT, the public key information 
            //(using RSACryptoServiceProvider.ExportParameters(false)
,
            //and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt,RSA.ExportParameters(false),
 false);

            //Pass the data to DECRYPT, the private key information
 
            //(using RSACryptoServiceProvider.ExportParameters(true)
,
            //and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData,RSA.ExportParameters(true),
 false);

            //Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));
        }
        catch(ArgumentNullException)
        {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");

        }
    }

    static public byte[] RSAEncrypt(byte[]
 DataToEncrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
    {
        try
        {    
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //Import the RSA Key information. This only needs
            //toinclude the public key information.
            RSA.ImportParameters(RSAKeyInfo);

            //Encrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSA.Encrypt(DataToEncrypt, DoOAEPPadding);
        }
        //Catch and display a CryptographicException  
        //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

            return null;
        }

    }

    static public byte[] RSADecrypt(byte[]
 DataToDecrypt, RSAParameters RSAKeyInfo,bool DoOAEPPadding)
    {
        try
        {
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //Import the RSA Key information. This needs
            //to include the private key information.
            RSA.ImportParameters(RSAKeyInfo);

            //Decrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSA.Decrypt(DataToDecrypt, DoOAEPPadding);
        }
        //Catch and display a CryptographicException  
        //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.ToString());

            return null;
        }

    }
}
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
array<Byte>^ RSAEncrypt( array<Byte>^DataToEncrypt, RSAParameters RSAKeyInfo,
 bool DoOAEPPadding )
{
   try
   {
      
      //Create a new instance of RSACryptoServiceProvider.
      RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
      
      //Import the RSA Key information. This only needs
      //toinclude the public key information.
      RSA->ImportParameters( RSAKeyInfo );
      
      //Encrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSA->Encrypt( DataToEncrypt, DoOAEPPadding );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
      return nullptr;
   }

}

array<Byte>^ RSADecrypt( array<Byte>^DataToDecrypt, RSAParameters RSAKeyInfo,
 bool DoOAEPPadding )
{
   try
   {
      
      //Create a new instance of RSACryptoServiceProvider.
      RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
      
      //Import the RSA Key information. This needs
      //to include the private key information.
      RSA->ImportParameters( RSAKeyInfo );
      
      //Decrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSA->Decrypt( DataToDecrypt, DoOAEPPadding );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e );
      return nullptr;
   }

}

int main()
{
   try
   {
      
      //Create a UnicodeEncoder to convert between byte array and string.
      UnicodeEncoding^ ByteConverter = gcnew UnicodeEncoding;
      
      //Create byte arrays to hold original, encrypted, and decrypted
 data.
      array<Byte>^dataToEncrypt = ByteConverter->GetBytes( "Data to
 Encrypt" );
      array<Byte>^encryptedData;
      array<Byte>^decryptedData;
      
      //Create a new instance of RSACryptoServiceProvider to generate
      //public and private key data.
      RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
      
      //Pass the data to ENCRYPT, the public key information 
      //(using RSACryptoServiceProvider.ExportParameters(false),
      //and a boolean flag specifying no OAEP padding.
      encryptedData = RSAEncrypt( dataToEncrypt, RSA->ExportParameters( false
 ), false );
      
      //Pass the data to DECRYPT, the private key information 
      //(using RSACryptoServiceProvider.ExportParameters(true),
      //and a boolean flag specifying no OAEP padding.
      decryptedData = RSADecrypt( encryptedData, RSA->ExportParameters( true
 ), false );
      
      //Display the decrypted plaintext to the console. 
      Console::WriteLine( "Decrypted plaintext: {0}", ByteConverter->GetString(
 decryptedData ) );
   }
   catch ( ArgumentNullException^ ) 
   {
      
      //Catch this exception in case the encryption did
      //not succeed.
      Console::WriteLine( "Encryption failed." );
   }

}

import System.*;
import System.Security.Cryptography.*;
import System.Text.*;

class RSACSPSample
{
    public static void main(String[]
 args)
    {
        try {
            // Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding byteConverter =  new UnicodeEncoding();
            
            // Create byte arrays to hold original, encrypted, 
            // and decrypted data.
            ubyte dataToEncrypt[] = byteConverter.GetBytes("Data to Encrypt");
            ubyte encryptedData[];
            ubyte decryptedData[];
            
            // Create a new instance of RSACryptoServiceProvider to
 generate
            // public and private key data.
            RSACryptoServiceProvider rsa =  new RSACryptoServiceProvider();
            
            // Pass the data to ENCRYPT, the public key information
 
            // (using RSACryptoServiceProvider.ExportParameters(false)
,
            // and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, 
                rsa.ExportParameters(false), false);
            
            // Pass the data to DECRYPT, the private key information
 
            //(using RSACryptoServiceProvider.ExportParameters(true)
,
            // and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, 
                rsa.ExportParameters(true), false);
            
            // Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", 
                byteConverter.GetString(decryptedData));
        }
        catch (ArgumentNullException exp) {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");
        }
    } //main 

    public static ubyte[] RSAEncrypt(ubyte
 dataToEncrypt[], 
        RSAParameters rsaKeyInfo, boolean doOaepPadding) 
    {
        try {
            // Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider rsa =  new RSACryptoServiceProvider();
            
            // Import the rsa Key information. This only needs
            // toinclude the public key information.
            rsa.ImportParameters(rsaKeyInfo);
            
            // Encrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsa.Encrypt(dataToEncrypt, doOaepPadding) ;
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
            return null ;
        }
    } //RSAEncrypt

    public static ubyte[] RSADecrypt(ubyte
 dataToDecrypt[], 
        RSAParameters rsaKeyInfo, boolean doOaepPadding) 
    {
        try {
            // Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider rsa =  new RSACryptoServiceProvider();
            
            // Import the rsa Key information. This needs
            // to include the private key information.
            rsa.ImportParameters(rsaKeyInfo);
            
            // Decrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsa.Decrypt(dataToDecrypt, doOaepPadding) ;
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.ToString());
            return null ;
        }
    } //RSADecrypt
} //RSACSPSample

RSACryptoServiceProvider使用して作成したキー情報を RSAParameters オブジェクトエクスポートするコード例次に示します

Try

    'Create a new RSACryptoServiceProvider object. 
    Dim RSA As New RSACryptoServiceProvider()

    'Export the key information to an RSAParameters object.
    'Pass false to export the public key information or pass
    'true to export public and private key information.
    Dim RSAParams As RSAParameters = RSA.ExportParameters(False)


Catch e As CryptographicException
    'Catch this exception in case the encryption did
    'not succeed.
    Console.WriteLine(e.Message)
End Try
try
{
    //Create a new RSACryptoServiceProvider object.
    RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();


    //Export the key information to an RSAParameters object.
    //Pass false to export the public key information or pass
    //true to export public and private key information.
    RSAParameters RSAParams = RSA.ExportParameters(false);


}
catch(CryptographicException e)
{
    //Catch this exception in case the encryption did
    //not succeed.
    Console.WriteLine(e.Message);

}
try
{
   //Create a new RSACryptoServiceProvider Object*.
   RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
   
   //Export the key information to an RSAParameters object.
   //Pass false to export the public key information or pass
   //true to export public and private key information.
   RSAParameters RSAParams = RSA->ExportParameters( false );
}
catch ( CryptographicException^ e ) 
{
   //Catch this exception in case the encryption did
   //not succeed.
   Console::WriteLine( e->Message );
}
try {
    // Create a new RSACryptoServiceProvider object.
    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

    // Export the key information to an RSAParameters object.
    // Pass false to export the public key information or pass
    // true to export public and private key information.
    RSAParameters rsaParams = rsa.ExportParameters(false);
}
catch (CryptographicException e) {
    // Catch this exception in case the encryption did
    // not succeed.
    Console.WriteLine(e.get_Message());
}
継承階層継承階層
System.Object
   System.Security.Cryptography.AsymmetricAlgorithm
     System.Security.Cryptography.RSA
      System.Security.Cryptography.RSACryptoServiceProvider
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
バージョン情報バージョン情報
参照参照
関連項目
RSACryptoServiceProvider メンバ
System.Security.Cryptography 名前空間
その他の技術情報
暗号サービス

RSACryptoServiceProvider コンストラクタ ()

既定キー使用して、RSACryptoServiceProvider クラス新しインスタンス初期化します。

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

Dim instance As New RSACryptoServiceProvider
public RSACryptoServiceProvider ()
public:
RSACryptoServiceProvider ()
public RSACryptoServiceProvider ()
public function RSACryptoServiceProvider ()
例外例外
例外種類条件

CryptographicException

暗号サービス プロバイダ (CSP) を取得できません。

解説解説
使用例使用例

RSACryptoServiceProvider クラス使用して文字列バイト配列暗号化し、そのバイト文字列復号化するコード例次に示します

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

 _

Class RSACSPSample


    Shared Sub Main()
        Try
            'Create a UnicodeEncoder to convert between byte array and
 string.
            Dim ByteConverter As New
 UnicodeEncoding()

            'Create byte arrays to hold original, encrypted, and decrypted
 data.
            Dim dataToEncrypt As Byte()
 = ByteConverter.GetBytes("Data to Encrypt")
            Dim encryptedData() As Byte
            Dim decryptedData() As Byte

            'Create a new instance of RSACryptoServiceProvider to generate
            'public and private key data.
            Dim RSA As New
 RSACryptoServiceProvider()

            'Pass the data to ENCRYPT, the public key information 
            '(using RSACryptoServiceProvider.ExportParameters(false)
,
            'and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, RSA.ExportParameters(False),
 False)

            'Pass the data to DECRYPT, the private key information 
            '(using RSACryptoServiceProvider.ExportParameters(true)
,
            'and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, RSA.ExportParameters(True),
 False)

            'Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}",
 ByteConverter.GetString(decryptedData))
        Catch e As ArgumentNullException
            'Catch this exception in case the encryption did
            'not succeed.
            Console.WriteLine("Encryption failed.")
        End Try
    End Sub


    Public Shared Function
 RSAEncrypt(ByVal DataToEncrypt() As Byte,
 ByVal RSAKeyInfo As RSAParameters, ByVal DoOAEPPadding As Boolean)
 As Byte()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSA As New
 RSACryptoServiceProvider()

            'Import the RSA Key information. This only needs
            'toinclude the public key information.
            RSA.ImportParameters(RSAKeyInfo)

            'Encrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSA.Encrypt(DataToEncrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.Message)

            Return Nothing
        End Try
    End Function


    Public Shared Function
 RSADecrypt(ByVal DataToDecrypt() As Byte,
 ByVal RSAKeyInfo As RSAParameters, ByVal DoOAEPPadding As Boolean)
 As Byte()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSA As New
 RSACryptoServiceProvider()

            'Import the RSA Key information. This needs
            'to include the private key information.
            RSA.ImportParameters(RSAKeyInfo)

            'Decrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSA.Decrypt(DataToDecrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.ToString())

            Return Nothing
        End Try
    End Function
End Class
using System;
using System.Security.Cryptography;
using System.Text;

class RSACSPSample
{

    static void Main()
    {
        try
        {
            //Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding ByteConverter = new UnicodeEncoding();

            //Create byte arrays to hold original, encrypted, and decrypted
 data.
            byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
            byte[] encryptedData;
            byte[] decryptedData;
            
            //Create a new instance of RSACryptoServiceProvider to generate
            //public and private key data.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //Pass the data to ENCRYPT, the public key information 
            //(using RSACryptoServiceProvider.ExportParameters(false)
,
            //and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt,RSA.ExportParameters(false),
 false);

            //Pass the data to DECRYPT, the private key information
 
            //(using RSACryptoServiceProvider.ExportParameters(true)
,
            //and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData,RSA.ExportParameters(true),
 false);

            //Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));
        }
        catch(ArgumentNullException)
        {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");

        }
    }

    static public byte[] RSAEncrypt(byte[]
 DataToEncrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
    {
        try
        {    
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //Import the RSA Key information. This only needs
            //toinclude the public key information.
            RSA.ImportParameters(RSAKeyInfo);

            //Encrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSA.Encrypt(DataToEncrypt, DoOAEPPadding);
        }
        //Catch and display a CryptographicException  
        //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

            return null;
        }

    }

    static public byte[] RSADecrypt(byte[]
 DataToDecrypt, RSAParameters RSAKeyInfo,bool DoOAEPPadding)
    {
        try
        {
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //Import the RSA Key information. This needs
            //to include the private key information.
            RSA.ImportParameters(RSAKeyInfo);

            //Decrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSA.Decrypt(DataToDecrypt, DoOAEPPadding);
        }
        //Catch and display a CryptographicException  
        //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.ToString());

            return null;
        }

    }
}
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
array<Byte>^ RSAEncrypt( array<Byte>^DataToEncrypt, RSAParameters RSAKeyInfo,
 bool DoOAEPPadding )
{
   try
   {
      
      //Create a new instance of RSACryptoServiceProvider.
      RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
      
      //Import the RSA Key information. This only needs
      //toinclude the public key information.
      RSA->ImportParameters( RSAKeyInfo );
      
      //Encrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSA->Encrypt( DataToEncrypt, DoOAEPPadding );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
      return nullptr;
   }

}

array<Byte>^ RSADecrypt( array<Byte>^DataToDecrypt, RSAParameters RSAKeyInfo,
 bool DoOAEPPadding )
{
   try
   {
      
      //Create a new instance of RSACryptoServiceProvider.
      RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
      
      //Import the RSA Key information. This needs
      //to include the private key information.
      RSA->ImportParameters( RSAKeyInfo );
      
      //Decrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSA->Decrypt( DataToDecrypt, DoOAEPPadding );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e );
      return nullptr;
   }

}

int main()
{
   try
   {
      
      //Create a UnicodeEncoder to convert between byte array and string.
      UnicodeEncoding^ ByteConverter = gcnew UnicodeEncoding;
      
      //Create byte arrays to hold original, encrypted, and decrypted
 data.
      array<Byte>^dataToEncrypt = ByteConverter->GetBytes( "Data to
 Encrypt" );
      array<Byte>^encryptedData;
      array<Byte>^decryptedData;
      
      //Create a new instance of RSACryptoServiceProvider to generate
      //public and private key data.
      RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
      
      //Pass the data to ENCRYPT, the public key information 
      //(using RSACryptoServiceProvider.ExportParameters(false),
      //and a boolean flag specifying no OAEP padding.
      encryptedData = RSAEncrypt( dataToEncrypt, RSA->ExportParameters( false
 ), false );
      
      //Pass the data to DECRYPT, the private key information 
      //(using RSACryptoServiceProvider.ExportParameters(true),
      //and a boolean flag specifying no OAEP padding.
      decryptedData = RSADecrypt( encryptedData, RSA->ExportParameters( true
 ), false );
      
      //Display the decrypted plaintext to the console. 
      Console::WriteLine( "Decrypted plaintext: {0}", ByteConverter->GetString(
 decryptedData ) );
   }
   catch ( ArgumentNullException^ ) 
   {
      
      //Catch this exception in case the encryption did
      //not succeed.
      Console::WriteLine( "Encryption failed." );
   }

}

import System.*;
import System.Security.Cryptography.*;
import System.Text.*;

class RSACSPSample
{
    public static void main(String[]
 args)
    {
        try {
            // Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding byteConverter =  new UnicodeEncoding();
            
            // Create byte arrays to hold original, encrypted, 
            // and decrypted data.
            ubyte dataToEncrypt[] = byteConverter.GetBytes("Data to Encrypt");
            ubyte encryptedData[];
            ubyte decryptedData[];
            
            // Create a new instance of RSACryptoServiceProvider to
 generate
            // public and private key data.
            RSACryptoServiceProvider rsa =  new RSACryptoServiceProvider();
            
            // Pass the data to ENCRYPT, the public key information
 
            // (using RSACryptoServiceProvider.ExportParameters(false)
,
            // and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, 
                rsa.ExportParameters(false), false);
            
            // Pass the data to DECRYPT, the private key information
 
            //(using RSACryptoServiceProvider.ExportParameters(true)
,
            // and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, 
                rsa.ExportParameters(true), false);
            
            // Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", 
                byteConverter.GetString(decryptedData));
        }
        catch (ArgumentNullException exp) {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");
        }
    } //main 

    public static ubyte[] RSAEncrypt(ubyte
 dataToEncrypt[], 
        RSAParameters rsaKeyInfo, boolean doOaepPadding) 
    {
        try {
            // Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider rsa =  new RSACryptoServiceProvider();
            
            // Import the rsa Key information. This only needs
            // toinclude the public key information.
            rsa.ImportParameters(rsaKeyInfo);
            
            // Encrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsa.Encrypt(dataToEncrypt, doOaepPadding) ;
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
            return null ;
        }
    } //RSAEncrypt

    public static ubyte[] RSADecrypt(ubyte
 dataToDecrypt[], 
        RSAParameters rsaKeyInfo, boolean doOaepPadding) 
    {
        try {
            // Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider rsa =  new RSACryptoServiceProvider();
            
            // Import the rsa Key information. This needs
            // to include the private key information.
            rsa.ImportParameters(rsaKeyInfo);
            
            // Decrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsa.Decrypt(dataToDecrypt, doOaepPadding) ;
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.ToString());
            return null ;
        }
    } //RSADecrypt
} //RSACSPSample
.NET Framework のセキュリティ.NET Frameworkセキュリティ
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
RSACryptoServiceProvider クラス
RSACryptoServiceProvider メンバ
System.Security.Cryptography 名前空間
その他の技術情報
暗号サービス

RSACryptoServiceProvider コンストラクタ (CspParameters)

指定したパラメータ使用して、RSACryptoServiceProvider クラス新しインスタンス初期化します。

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

Public Sub New ( _
    parameters As CspParameters _
)
Dim parameters As CspParameters

Dim instance As New RSACryptoServiceProvider(parameters)
public RSACryptoServiceProvider (
    CspParameters parameters
)
public:
RSACryptoServiceProvider (
    CspParameters^ parameters
)
public RSACryptoServiceProvider (
    CspParameters parameters
)
public function RSACryptoServiceProvider (
    parameters : CspParameters
)

パラメータ

parameters

暗号サービス プロバイダ (CSP) に渡すパラメータ

例外例外
例外種類条件

CryptographicException

CSP取得できません。

解説解説
使用例使用例

RSACryptoServiceProvider オブジェクト作成し新しキー生成して、このキーキー コンテナ内に格納するコード例次に示します

Imports System.Security.Cryptography
Imports System.Text

Module RSACSPExample

    Sub Main()
        Try
            Dim KeyContainerName As String
 = "MyKeyContainer"

            'Create a new key and persist it in 
            'the key container.
            RSAPersistKeyInCSP(KeyContainerName)

            'Create a UnicodeEncoder to convert between byte array and
 string.
            Dim ByteConverter As New
 UnicodeEncoding

            'Create byte arrays to hold original, encrypted, and decrypted
 data.
            Dim dataToEncrypt As Byte()
 = ByteConverter.GetBytes("Data to Encrypt")
            Dim encryptedData() As Byte
            Dim decryptedData() As Byte

            'Pass the data to ENCRYPT, the name of the key container,
 
            'and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, KeyContainerName, False)

            'Pass the data to DECRYPT, the name of the key container,
 
            'and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, KeyContainerName, False)

            'Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}",
 ByteConverter.GetString(decryptedData))

            RSADeleteKeyInCSP(KeyContainerName)
        Catch e As ArgumentNullException
            'Catch this exception in case the encryption did
            'not succeed.
            Console.WriteLine("Encryption failed.")
        End Try
    End Sub


    Sub RSAPersistKeyInCSP(ByVal ContainerName
 As String)
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider to generate
            'a new key pair.  Pass the CspParameters class to persist
 the 
            'key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Indicate that the key was persisted.
            Console.WriteLine("The RSA key was persisted in the
 container, ""{0}"".",
 ContainerName)
        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub


    Sub RSADeleteKeyInCSP(ByVal ContainerName
 As String)
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider. 
            'Pass the CspParameters class to use the 
            'key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Delete the key entry in the container.
            RSAalg.PersistKeyInCsp = False

            'Call Clear to release resources and delete the key from
 the container.
            RSAalg.Clear()

            'Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the
 container, ""{0}"".",
 ContainerName)
        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub


    Function RSAEncrypt(ByVal DataToEncrypt()
 As Byte, ByVal ContainerName
 As String, ByVal DoOAEPPadding As Boolean) As Byte()
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider.
            'Pass the CspParameters class to use the key 
            'from the key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Encrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSAalg.Encrypt(DataToEncrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.Message)

            Return Nothing
        End Try
    End Function


    Function RSADecrypt(ByVal DataToDecrypt()
 As Byte, ByVal ContainerName
 As String, ByVal DoOAEPPadding As Boolean) As Byte()
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider.
            'Pass the CspParameters class to use the key 
            'from the key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Decrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSAalg.Decrypt(DataToDecrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.ToString())

            Return Nothing
        End Try
    End Function

End Module
using System;
using System.Security.Cryptography;
using System.Text;

class RSACSPSample
{

    static void Main()
    {
        try
        {
            string KeyContainerName = "MyKeyContainer";

            //Create a new key and persist it in 
            //the key container.
            RSAPersistKeyInCSP(KeyContainerName);

            //Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding ByteConverter = new UnicodeEncoding();

            //Create byte arrays to hold original, encrypted, and decrypted
 data.
            byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
            byte[] encryptedData;
            byte[] decryptedData;

            //Pass the data to ENCRYPT, the name of the key container
,
            //and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt,KeyContainerName, false);

            //Pass the data to DECRYPT, the name of the key container
,
            //and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData,KeyContainerName, false);

            //Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));

            RSADeleteKeyInCSP(KeyContainerName);
        }
        catch(ArgumentNullException)
        {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");

        }
    }

    public static void RSAPersistKeyInCSP(string
 ContainerName)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider to generate
            //a new key pair.  Pass the CspParameters class to persist
 the 
            //key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was persisted in
 the container, \"{0}\".", ContainerName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
    }

    public static void RSADeleteKeyInCSP(string
 ContainerName)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider. 
            //Pass the CspParameters class to use the 
            //key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Delete the key entry in the container.
            RSAalg.PersistKeyInCsp = false;

            //Call Clear to release resources and delete the key from
 the container.
            RSAalg.Clear();

            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the container, \"{0}\".",
 ContainerName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
    }

    static public byte[] RSAEncrypt(byte[]
 DataToEncrypt, string ContainerName, bool
 DoOAEPPadding)
    {
        try
        {    
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider.
            //Pass the CspParameters class to use the key 
            //from the key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Encrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSAalg.Encrypt(DataToEncrypt, DoOAEPPadding);
        }
            //Catch and display a CryptographicException  
            //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

            return null;
        }

    }

    static public byte[] RSADecrypt(byte[]
 DataToDecrypt, string ContainerName, bool
 DoOAEPPadding)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider.
            //Pass the CspParameters class to use the key 
            //from the key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Decrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSAalg.Decrypt(DataToDecrypt, DoOAEPPadding);
        }
            //Catch and display a CryptographicException  
            //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.ToString());

            return null;
        }

    }
}
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
void RSAPersistKeyInCSP( String^ ContainerName )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider to generate
      //a new key pair.  Pass the CspParameters class to persist the
 
      //key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Indicate that the key was persisted.
      Console::WriteLine( "The RSA key was persisted in the
 container, \"{0}\".", ContainerName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

void RSADeleteKeyInCSP( String^ ContainerName )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider. 
      //Pass the CspParameters class to use the 
      //key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Delete the key entry in the container.
      RSAalg->PersistKeyInCsp = false;
      
      //Call Clear to release resources and delete the key from the
 container.
      RSAalg->Clear();
      
      //Indicate that the key was persisted.
      Console::WriteLine( "The RSA key was deleted from the container, \"{0}\".",
 ContainerName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

array<Byte>^ RSAEncrypt( array<Byte>^DataToEncrypt, String^ ContainerName,
 bool DoOAEPPadding )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider.
      //Pass the CspParameters class to use the key 
      //from the key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Encrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSAalg->Encrypt( DataToEncrypt, DoOAEPPadding
 );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
      return nullptr;
   }

}

array<Byte>^ RSADecrypt( array<Byte>^DataToDecrypt, String^ ContainerName,
 bool DoOAEPPadding )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider.
      //Pass the CspParameters class to use the key 
      //from the key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Decrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSAalg->Decrypt( DataToDecrypt, DoOAEPPadding
 );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e );
      return nullptr;
   }

}

int main()
{
   try
   {
      String^ KeyContainerName = "MyKeyContainer";
      
      //Create a new key and persist it in 
      //the key container.
      RSAPersistKeyInCSP( KeyContainerName );
      
      //Create a UnicodeEncoder to convert between byte array and string.
      UnicodeEncoding^ ByteConverter = gcnew UnicodeEncoding;
      
      //Create byte arrays to hold original, encrypted, and decrypted
 data.
      array<Byte>^dataToEncrypt = ByteConverter->GetBytes( "Data to
 Encrypt" );
      array<Byte>^encryptedData;
      array<Byte>^decryptedData;
      
      //Pass the data to ENCRYPT, the name of the key container,
      //and a boolean flag specifying no OAEP padding.
      encryptedData = RSAEncrypt( dataToEncrypt, KeyContainerName, false
 );
      
      //Pass the data to DECRYPT, the name of the key container,
      //and a boolean flag specifying no OAEP padding.
      decryptedData = RSADecrypt( encryptedData, KeyContainerName, false
 );
      
      //Display the decrypted plaintext to the console. 
      Console::WriteLine( "Decrypted plaintext: {0}", ByteConverter->GetString(
 decryptedData ) );
      RSADeleteKeyInCSP( KeyContainerName );
   }
   catch ( ArgumentNullException^ ) 
   {
      
      //Catch this exception in case the encryption did
      //not succeed.
      Console::WriteLine( "Encryption failed." );
   }

}

import System.*;
import System.Security.Cryptography.*;
import System.Text.*;

class RSACSPSample
{
    public static void main(String[]
 args)
    {
        try {
            String keyContainerName = "MyKeyContainer";

            // Create a new key and persist it in 
            // the key container.
            RSAPersistKeyInCSP(keyContainerName);

            // Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding byteConverter = new UnicodeEncoding();

            // Create byte arrays to hold original, encrypted, and decrypted
 
            // data.
            ubyte dataToEncrypt[] = byteConverter.GetBytes("Data to Encrypt");
            ubyte encryptedData[];
            ubyte decryptedData[];

            // Pass the data to ENCRYPT, the name of the key container
,
            // and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, keyContainerName, false);

            // Pass the data to DECRYPT, the name of the key container
,
            // and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, keyContainerName, false);

            // Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", 
                byteConverter.GetString(decryptedData));
            RSADeleteKeyInCSP(keyContainerName);
        }
        catch (ArgumentNullException exp) {
            // Catch this exception in case the encryption did
            // not succeed.
            Console.WriteLine("Encryption failed.");
        }
    } //main

    public static void RSAPersistKeyInCSP(String
 containerName)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of RSACryptoServiceProvider to
 generate
            // a new key pair.  Pass the CspParameters class to persist
 the 
            // key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Indicate that the key was persisted.
            Console.WriteLine("The RSA key was persisted in
 the container, "
                + "\"{0}\".", containerName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //RSAPersistKeyInCSP

    public static void RSADeleteKeyInCSP(String
 containerName)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of RSACryptoServiceProvider. 
            // Pass the CspParameters class to use the 
            // key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Delete the key entry in the container.
            rsaAlg.set_PersistKeyInCsp(false);

            // Call Clear to release resources and delete the key from
 the 
            // container.
            rsaAlg.Clear();

            // Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the container, "
                + "\"{0}\".", containerName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //RSADeleteKeyInCSP

    public static ubyte[] RSAEncrypt(ubyte[]
 dataToEncrypt, 
        String containerName, boolean doOAEPPadding)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of RSACryptoServiceProvider.
            // Pass the CspParameters class to use the key 
            // from the key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Encrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsaAlg.Encrypt(dataToEncrypt, doOAEPPadding);
        }
            // Catch and display a CryptographicException  
            // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
            return null;
        }
    } //RSAEncrypt

    public static ubyte[] RSADecrypt(ubyte
 dataToDecrypt[], 
        String containerName, boolean doOAEPPadding)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of RSACryptoServiceProvider.
            // Pass the CspParameters class to use the key 
            // from the key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Decrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsaAlg.Decrypt(dataToDecrypt, doOAEPPadding);
        }
            // Catch and display a CryptographicException  
            // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.ToString());
            return null;
        }
    } //RSADecrypt
} //RSACSPSample
.NET Framework のセキュリティ.NET Frameworkセキュリティ
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
RSACryptoServiceProvider クラス
RSACryptoServiceProvider メンバ
System.Security.Cryptography 名前空間
その他の技術情報
暗号サービス

RSACryptoServiceProvider コンストラクタ (Int32, CspParameters)

キー サイズパラメータ指定して、RSACryptoServiceProvider クラス新しインスタンス初期化します。

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

Public Sub New ( _
    dwKeySize As Integer, _
    parameters As CspParameters _
)
Dim dwKeySize As Integer
Dim parameters As CspParameters

Dim instance As New RSACryptoServiceProvider(dwKeySize,
 parameters)
public RSACryptoServiceProvider (
    int dwKeySize,
    CspParameters parameters
)
public:
RSACryptoServiceProvider (
    int dwKeySize, 
    CspParameters^ parameters
)
public RSACryptoServiceProvider (
    int dwKeySize, 
    CspParameters parameters
)
public function RSACryptoServiceProvider (
    dwKeySize : int, 
    parameters : CspParameters
)

パラメータ

dwKeySize

使用するキーサイズ (ビット単位)。

parameters

暗号サービス プロバイダ (CSP) に渡すパラメータ

例外例外
例外種類条件

CryptographicException

CSP取得できません。

または

キー作成できません。

解説解説
使用例使用例

RSACryptoServiceProvider作成し新しキー生成して、このキーキー コンテナ内に格納するコード例次に示します

Imports System.Security.Cryptography
Imports System.Text

Module RSACSPExample

    Sub Main()
        Try
            Dim KeyContainerName As String
 = "MyKeyContainer"

            'Create a new key and persist it in 
            'the key container.
            RSAPersistKeyInCSP(KeyContainerName)

            'Create a UnicodeEncoder to convert between byte array and
 string.
            Dim ByteConverter As New
 UnicodeEncoding

            'Create byte arrays to hold original, encrypted, and decrypted
 data.
            Dim dataToEncrypt As Byte()
 = ByteConverter.GetBytes("Data to Encrypt")
            Dim encryptedData() As Byte
            Dim decryptedData() As Byte

            'Pass the data to ENCRYPT, the name of the key container,
 
            'and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, KeyContainerName, False)

            'Pass the data to DECRYPT, the name of the key container,
 
            'and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, KeyContainerName, False)

            'Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}",
 ByteConverter.GetString(decryptedData))

            RSADeleteKeyInCSP(KeyContainerName)
        Catch e As ArgumentNullException
            'Catch this exception in case the encryption did
            'not succeed.
            Console.WriteLine("Encryption failed.")
        End Try
    End Sub


    Sub RSAPersistKeyInCSP(ByVal ContainerName
 As String)
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider to generate
            'a new key pair.  Pass the CspParameters class to persist
 the 
            'key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(2048, cspParams)

            'Indicate that the key was persisted.
            Console.WriteLine("The RSA key with a key-size of
 {0} was persisted in the container, ""{1}"".",
 _
                              RSAalg.KeySize, ContainerName)
        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub


    Sub RSADeleteKeyInCSP(ByVal ContainerName
 As String)
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider. 
            'Pass the CspParameters class to use the 
            'key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Delete the key entry in the container.
            RSAalg.PersistKeyInCsp = False

            'Call Clear to release resources and delete the key from
 the container.
            RSAalg.Clear()

            'Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the
 container, ""{0}"".",
 ContainerName)
        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub


    Function RSAEncrypt(ByVal DataToEncrypt()
 As Byte, ByVal ContainerName
 As String, ByVal DoOAEPPadding As Boolean) As Byte()
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider.
            'Pass the CspParameters class to use the key 
            'from the key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Encrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSAalg.Encrypt(DataToEncrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.Message)

            Return Nothing
        End Try
    End Function


    Function RSADecrypt(ByVal DataToDecrypt()
 As Byte, ByVal ContainerName
 As String, ByVal DoOAEPPadding As Boolean) As Byte()
        Try
            ' Create a new instance of CspParameters.  Pass
            ' 13 to specify a DSA container or 1 to specify
            ' an RSA container.  The default is 1.
            Dim cspParams As New
 CspParameters

            ' Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName

            'Create a new instance of RSACryptoServiceProvider.
            'Pass the CspParameters class to use the key 
            'from the key in the container.
            Dim RSAalg As New
 RSACryptoServiceProvider(cspParams)

            'Decrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSAalg.Decrypt(DataToDecrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.ToString())

            Return Nothing
        End Try
    End Function

End Module
using System;
using System.Security.Cryptography;
using System.Text;

class RSACSPSample
{

    static void Main()
    {
        try
        {
            string KeyContainerName = "MyKeyContainer";

            //Create a new key and persist it in 
            //the key container.
            RSAPersistKeyInCSP(KeyContainerName);

            //Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding ByteConverter = new UnicodeEncoding();

            //Create byte arrays to hold original, encrypted, and decrypted
 data.
            byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
            byte[] encryptedData;
            byte[] decryptedData;

            //Pass the data to ENCRYPT, the name of the key container
,
            //and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt,KeyContainerName, false);

            //Pass the data to DECRYPT, the name of the key container
,
            //and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData,KeyContainerName, false);

            //Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));

            RSADeleteKeyInCSP(KeyContainerName);
        }
        catch(ArgumentNullException)
        {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");

        }
    }

    public static void RSAPersistKeyInCSP(string
 ContainerName)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider to generate
            //a new key pair.  Pass the CspParameters class to persist
 the 
            //key in the container.  Pass an intger of 2048 to specify
 the 
            //key-size.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(
 2048, cspParams);

            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key with a key-size of {0} was persisted
 in the container, \"{1}\".", 
                              RSAalg.KeySize , ContainerName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
    }

    public static void RSADeleteKeyInCSP(string
 ContainerName)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of DSACryptoServiceProvider. 
            //Pass the CspParameters class to use the 
            //key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Delete the key entry in the container.
            RSAalg.PersistKeyInCsp = false;

            //Call Clear to release resources and delete the key from
 the container.
            RSAalg.Clear();

            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the container, \"{0}\".",
 ContainerName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
    }

    static public byte[] RSAEncrypt(byte[]
 DataToEncrypt, string ContainerName, bool
 DoOAEPPadding)
    {
        try
        {    
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of DSACryptoServiceProvider.
            //Pass the CspParameters class to use the key 
            //from the key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Encrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSAalg.Encrypt(DataToEncrypt, DoOAEPPadding);
        }
            //Catch and display a CryptographicException  
            //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

            return null;
        }

    }

    static public byte[] RSADecrypt(byte[]
 DataToDecrypt, string ContainerName, bool
 DoOAEPPadding)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of DSACryptoServiceProvider.
            //Pass the CspParameters class to use the key 
            //from the key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Decrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSAalg.Decrypt(DataToDecrypt, DoOAEPPadding);
        }
            //Catch and display a CryptographicException  
            //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.ToString());

            return null;
        }

    }
}
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
void RSAPersistKeyInCSP( String^ ContainerName )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider to generate
      //a new key pair.  Pass the CspParameters class to persist the
 
      //key in the container.  Pass an intger of 2048 to specify the
 
      //key-size.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( 2048,cspParams
 );
      
      //Indicate that the key was persisted.
      Console::WriteLine( "The RSA key with a key-size of {0} was persisted
 in the container, \"{1}\".", RSAalg->KeySize,
 ContainerName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

void RSADeleteKeyInCSP( String^ ContainerName )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of DSACryptoServiceProvider. 
      //Pass the CspParameters class to use the 
      //key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Delete the key entry in the container.
      RSAalg->PersistKeyInCsp = false;
      
      //Call Clear to release resources and delete the key from the
 container.
      RSAalg->Clear();
      
      //Indicate that the key was persisted.
      Console::WriteLine( "The RSA key was deleted from the container, \"{0}\".",
 ContainerName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

array<Byte>^ RSAEncrypt( array<Byte>^DataToEncrypt, String^ ContainerName,
 bool DoOAEPPadding )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of DSACryptoServiceProvider.
      //Pass the CspParameters class to use the key 
      //from the key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Encrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSAalg->Encrypt( DataToEncrypt, DoOAEPPadding
 );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
      return nullptr;
   }

}

array<Byte>^ RSADecrypt( array<Byte>^DataToDecrypt, String^ ContainerName,
 bool DoOAEPPadding )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of DSACryptoServiceProvider.
      //Pass the CspParameters class to use the key 
      //from the key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams
 );
      
      //Decrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSAalg->Decrypt( DataToDecrypt, DoOAEPPadding
 );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e );
      return nullptr;
   }

}

int main()
{
   try
   {
      String^ KeyContainerName = "MyKeyContainer";
      
      //Create a new key and persist it in 
      //the key container.
      RSAPersistKeyInCSP( KeyContainerName );
      
      //Create a UnicodeEncoder to convert between byte array and string.
      UnicodeEncoding^ ByteConverter = gcnew UnicodeEncoding;
      
      //Create byte arrays to hold original, encrypted, and decrypted
 data.
      array<Byte>^dataToEncrypt = ByteConverter->GetBytes( "Data to
 Encrypt" );
      array<Byte>^encryptedData;
      array<Byte>^decryptedData;
      
      //Pass the data to ENCRYPT, the name of the key container,
      //and a boolean flag specifying no OAEP padding.
      encryptedData = RSAEncrypt( dataToEncrypt, KeyContainerName, false
 );
      
      //Pass the data to DECRYPT, the name of the key container,
      //and a boolean flag specifying no OAEP padding.
      decryptedData = RSADecrypt( encryptedData, KeyContainerName, false
 );
      
      //Display the decrypted plaintext to the console. 
      Console::WriteLine( "Decrypted plaintext: {0}", ByteConverter->GetString(
 decryptedData ) );
      RSADeleteKeyInCSP( KeyContainerName );
   }
   catch ( ArgumentNullException^ ) 
   {
      
      //Catch this exception in case the encryption did
      //not succeed.
      Console::WriteLine( "Encryption failed." );
   }

}

import System.*;
import System.Security.Cryptography.*;
import System.Text.*;

class RSACSPSample
{
    public static void main(String[]
 args)
    {
        try {
            String keyContainerName = "MyKeyContainer";

            // Create a new key and persist it in 
            // the key container.
            RSAPersistKeyInCSP(keyContainerName);

            // Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding byteConverter = new UnicodeEncoding();

            // Create byte arrays to hold original, encrypted, and decrypted
 
            // data.
            ubyte dataToEncrypt[] = byteConverter.GetBytes("Data to Encrypt");
            ubyte encryptedData[];
            ubyte decryptedData[];

            // Pass the data to ENCRYPT, the name of the key container
,
            // and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, keyContainerName, false);

            // Pass the data to DECRYPT, the name of the key container
,
            // and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, keyContainerName, false);

            // Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", 
                byteConverter.GetString(decryptedData));
            RSADeleteKeyInCSP(keyContainerName);
        }
        catch (ArgumentNullException exp) {
            // Catch this exception in case the encryption did
            // not succeed.
            Console.WriteLine("Encryption failed.");
        }
    } //main

    public static void RSAPersistKeyInCSP(String
 containerName)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of RSACryptoServiceProvider to
 generate
            // a new key pair.  Pass the CspParameters class to persist
 the 
            // key in the container.  Pass an intger of 2048 to specify
 the 
            // key-size.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(2048, cspParams);

            // Indicate that the key was persisted.
            Console.WriteLine("The RSA key with a key-size of {0} was "
                + "persisted in the container, \"{1}\".",
 
                System.Convert.ToString(rsaAlg.get_KeySize()), containerName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //RSAPersistKeyInCSP

    public static void RSADeleteKeyInCSP(String
 containerName)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of DSACryptoServiceProvider. 
            // Pass the CspParameters class to use the 
            // key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Delete the key entry in the container.
            rsaAlg.set_PersistKeyInCsp(false);

            // Call Clear to release resources and delete the key from
 
            // the container.
            rsaAlg.Clear();

            // Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the container, "
                + "\"{0}\".", containerName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //RSADeleteKeyInCSP

    public static ubyte[] RSAEncrypt(ubyte
 dataToEncrypt[], 
        String containerName, boolean doOAEPPadding)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of DSACryptoServiceProvider.
            // Pass the CspParameters class to use the key 
            // from the key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Encrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsaAlg.Encrypt(dataToEncrypt, doOAEPPadding);
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
            return null;
        }
    } //RSAEncrypt

    public static ubyte[] RSADecrypt(ubyte[]
 dataToDecrypt, 
        String containerName, boolean doOAEPPadding)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;

            // Create a new instance of DSACryptoServiceProvider.
            // Pass the CspParameters class to use the key 
            // from the key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);

            // Decrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsaAlg.Decrypt(dataToDecrypt, doOAEPPadding);
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.ToString());
            return null;
        }
    } //RSADecrypt
} //RSACSPSample
.NET Framework のセキュリティ.NET Frameworkセキュリティ
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
RSACryptoServiceProvider クラス
RSACryptoServiceProvider メンバ
System.Security.Cryptography 名前空間
その他の技術情報
暗号サービス

RSACryptoServiceProvider コンストラクタ

RSACryptoServiceProvider クラス新しインスタンス初期化します。
オーバーロードの一覧オーバーロードの一覧

名前 説明
RSACryptoServiceProvider () 既定キー使用してRSACryptoServiceProvider クラス新しインスタンス初期化します。

.NET Compact Framework によってサポートされています。

RSACryptoServiceProvider (CspParameters) 指定したパラメータ使用してRSACryptoServiceProvider クラス新しインスタンス初期化します。

.NET Compact Framework によってサポートされています。

RSACryptoServiceProvider (Int32) キーサイズ指定してRSACryptoServiceProvider クラス新しインスタンス初期化します。

.NET Compact Framework によってサポートされています。

RSACryptoServiceProvider (Int32, CspParameters) キー サイズパラメータ指定してRSACryptoServiceProvider クラス新しインスタンス初期化します。

.NET Compact Framework によってサポートされています。

参照参照

関連項目

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

その他の技術情報

暗号サービス

RSACryptoServiceProvider コンストラクタ (Int32)

キーサイズ指定して、RSACryptoServiceProvider クラス新しインスタンス初期化します。

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

Public Sub New ( _
    dwKeySize As Integer _
)
Dim dwKeySize As Integer

Dim instance As New RSACryptoServiceProvider(dwKeySize)
public RSACryptoServiceProvider (
    int dwKeySize
)
public:
RSACryptoServiceProvider (
    int dwKeySize
)
public RSACryptoServiceProvider (
    int dwKeySize
)
public function RSACryptoServiceProvider (
    dwKeySize : int
)

パラメータ

dwKeySize

使用するキーサイズ (ビット単位)。

例外例外
例外種類条件

CryptographicException

暗号サービス プロバイダ (CSP) を取得できません。

解説解説
使用例使用例

RSACryptoServiceProvider作成し新しキー生成して、このキーキー コンテナ内に格納するコード例次に示します

Imports System.Security.Cryptography
Imports System.Text

Module RSACSPExample

    Sub Main()
        Try
            'Create a UnicodeEncoder to convert between byte array and
 string.
            Dim ByteConverter As New
 UnicodeEncoding

            'Create byte arrays to hold original, encrypted, and decrypted
 data.
            Dim dataToEncrypt As Byte()
 = ByteConverter.GetBytes("Data to Encrypt")
            Dim encryptedData() As Byte
            Dim decryptedData() As Byte

            'Create a new instance of RSACryptoServiceProvider to generate
            'public and private key data.  Pass an integer specifying
 a key-
            'length of 2048.
            Dim RSAalg As New
 RSACryptoServiceProvider(2048)

            'Display the key-legth to the console.
            Console.WriteLine("A new key pair of legth {0} was
 created", RSAalg.KeySize)

            'Pass the data to ENCRYPT, the public key information 
            '(using RSACryptoServiceProvider.ExportParameters(false)
,
            'and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, RSAalg.ExportParameters(False),
 False)

            'Pass the data to DECRYPT, the private key information 
            '(using RSACryptoServiceProvider.ExportParameters(true)
,
            'and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, RSAalg.ExportParameters(True),
 False)

            'Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}",
 ByteConverter.GetString(decryptedData))
        Catch e As ArgumentNullException
            'Catch this exception in case the encryption did
            'not succeed.
            Console.WriteLine("Encryption failed.")
        End Try
    End Sub 'Main


    Function RSAEncrypt(ByVal DataToEncrypt()
 As Byte, ByVal RSAKeyInfo
 As RSAParameters, ByVal DoOAEPPadding As Boolean) As Byte()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSAalg As New
 RSACryptoServiceProvider

            'Import the RSA Key information. This only needs
            'toinclude the public key information.
            RSAalg.ImportParameters(RSAKeyInfo)

            'Encrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSAalg.Encrypt(DataToEncrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.Message)

            Return Nothing
        End Try
    End Function 


    Function RSADecrypt(ByVal DataToDecrypt()
 As Byte, ByVal RSAKeyInfo
 As RSAParameters, ByVal DoOAEPPadding As Boolean) As Byte()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSAalg As New
 RSACryptoServiceProvider

            'Import the RSA Key information. This needs
            'to include the private key information.
            RSAalg.ImportParameters(RSAKeyInfo)

            'Decrypt the passed byte array and specify OAEP padding.
  
            'OAEP padding is only available on Microsoft Windows XP
 or
            'later.  
            Return RSAalg.Decrypt(DataToDecrypt, DoOAEPPadding)
            'Catch and display a CryptographicException  
            'to the console.
        Catch e As CryptographicException
            Console.WriteLine(e.ToString())

            Return Nothing
        End Try
    End Function  

End Module
using System;
using System.Security.Cryptography;
using System.Text;

class RSACSPSample
{

    static void Main()
    {
        try
        {
            //Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding ByteConverter = new UnicodeEncoding();

            //Create byte arrays to hold original, encrypted, and decrypted
 data.
            byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
            byte[] encryptedData;
            byte[] decryptedData;
            
            //Create a new instance of RSACryptoServiceProvider to generate
            //public and private key data.  Pass an integer specifying
 a key-
            //length of 2048.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(2048);

            //Display the key-legth to the console.
            Console.WriteLine("A new key pair of legth {0}
 was created", RSAalg.KeySize);

            //Pass the data to ENCRYPT, the public key information 
            //(using RSACryptoServiceProvider.ExportParameters(false)
,
            //and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt,RSAalg.ExportParameters(false),
 false);

            //Pass the data to DECRYPT, the private key information
 
            //(using RSACryptoServiceProvider.ExportParameters(true)
,
            //and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData,RSAalg.ExportParameters(true),
 false);

            //Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));
        }
        catch(ArgumentNullException)
        {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine("Encryption failed.");

        }
    }

    static public byte[] RSAEncrypt(byte[]
 DataToEncrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
    {
        try
        {    
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider();

            //Import the RSA Key information. This only needs
            //toinclude the public key information.
            RSAalg.ImportParameters(RSAKeyInfo);

            //Encrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSAalg.Encrypt(DataToEncrypt, DoOAEPPadding);
        }
            //Catch and display a CryptographicException  
            //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

            return null;
        }

    }

    static public byte[] RSADecrypt(byte[]
 DataToDecrypt, RSAParameters RSAKeyInfo,bool DoOAEPPadding)
    {
        try
        {
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider();

            //Import the RSA Key information. This needs
            //to include the private key information.
            RSAalg.ImportParameters(RSAKeyInfo);

            //Decrypt the passed byte array and specify OAEP padding.
  
            //OAEP padding is only available on Microsoft Windows XP
 or
            //later.  
            return RSAalg.Decrypt(DataToDecrypt, DoOAEPPadding);
        }
            //Catch and display a CryptographicException  
            //to the console.
        catch(CryptographicException e)
        {
            Console.WriteLine(e.ToString());

            return null;
        }

    }
}
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;
array<Byte>^ RSAEncrypt( array<Byte>^DataToEncrypt, RSAParameters RSAKeyInfo,
 bool DoOAEPPadding )
{
   try
   {
      
      //Create a new instance of RSACryptoServiceProvider.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider;
      
      //Import the RSA Key information. This only needs
      //toinclude the public key information.
      RSAalg->ImportParameters( RSAKeyInfo );
      
      //Encrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSAalg->Encrypt( DataToEncrypt, DoOAEPPadding
 );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
      return nullptr;
   }

}

array<Byte>^ RSADecrypt( array<Byte>^DataToDecrypt, RSAParameters RSAKeyInfo,
 bool DoOAEPPadding )
{
   try
   {
      
      //Create a new instance of RSACryptoServiceProvider.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider;
      
      //Import the RSA Key information. This needs
      //to include the private key information.
      RSAalg->ImportParameters( RSAKeyInfo );
      
      //Decrypt the passed byte array and specify OAEP padding.  
      //OAEP padding is only available on Microsoft Windows XP or
      //later.  
      return RSAalg->Decrypt( DataToDecrypt, DoOAEPPadding
 );
   }
   //Catch and display a CryptographicException  
   //to the console.
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e );
      return nullptr;
   }

}

int main()
{
   try
   {
      
      //Create a UnicodeEncoder to convert between byte array and string.
      UnicodeEncoding^ ByteConverter = gcnew UnicodeEncoding;
      
      //Create byte arrays to hold original, encrypted, and decrypted
 data.
      array<Byte>^dataToEncrypt = ByteConverter->GetBytes( "Data to
 Encrypt" );
      array<Byte>^encryptedData;
      array<Byte>^decryptedData;
      
      //Create a new instance of RSACryptoServiceProvider to generate
      //public and private key data.  Pass an integer specifying a key-
      //length of 2048.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( 2048 );
      
      //Display the key-legth to the console.
      Console::WriteLine( "A new key pair of legth {0} was
 created", RSAalg->KeySize );
      
      //Pass the data to ENCRYPT, the public key information 
      //(using RSACryptoServiceProvider.ExportParameters(false),
      //and a boolean flag specifying no OAEP padding.
      encryptedData = RSAEncrypt( dataToEncrypt, RSAalg->ExportParameters( false
 ), false );
      
      //Pass the data to DECRYPT, the private key information 
      //(using RSACryptoServiceProvider.ExportParameters(true),
      //and a boolean flag specifying no OAEP padding.
      decryptedData = RSADecrypt( encryptedData, RSAalg->ExportParameters( true
 ), false );
      
      //Display the decrypted plaintext to the console. 
      Console::WriteLine( "Decrypted plaintext: {0}", ByteConverter->GetString(
 decryptedData ) );
   }
   catch ( ArgumentNullException^ ) 
   {
      
      //Catch this exception in case the encryption did
      //not succeed.
      Console::WriteLine( "Encryption failed." );
   }

}

import System.*;
import System.Security.Cryptography.*;
import System.Text.*;

class RSACSPSample
{
    public static void main(String[]
 args)
    {
        try {
            // Create a UnicodeEncoder to convert between byte array
 and string.
            UnicodeEncoding byteConverter = new UnicodeEncoding();

            // Create byte arrays to hold original, encrypted, and decrypted
 
            // data.
            ubyte dataToEncrypt[] = byteConverter.GetBytes("Data to Encrypt");
            ubyte encryptedData[];
            ubyte decryptedData[];

            // Create a new instance of RSACryptoServiceProvider to
 generate
            // public and private key data.  Pass an integer specifying
 a key-
            // length of 2048.
            RSACryptoServiceProvider rsaAlg = new RSACryptoServiceProvider(2048);

            //Display the key-legth to the console.
            Console.WriteLine("A new key pair of legth {0}
 was created", 
                System.Convert.ToString(rsaAlg.get_KeySize()));

            // Pass the data to ENCRYPT, the public key information
 
            // (using RSACryptoServiceProvider.ExportParameters(false)
,
            // and a boolean flag specifying no OAEP padding.
            encryptedData = RSAEncrypt(dataToEncrypt, 
                rsaAlg.ExportParameters(false), false);

            // Pass the data to DECRYPT, the private key information
 
            // (using RSACryptoServiceProvider.ExportParameters(true)
,
            // and a boolean flag specifying no OAEP padding.
            decryptedData = RSADecrypt(encryptedData, 
                rsaAlg.ExportParameters(true), false);

            //Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", 
                byteConverter.GetString(decryptedData));
        }
        catch (ArgumentNullException exp) {
            // Catch this exception in case the encryption did
            // not succeed.
            Console.WriteLine("Encryption failed.");
        }
    } //main

    public static ubyte[] RSAEncrypt(ubyte
 dataToEncrypt[], 
        RSAParameters rsaKeyInfo, boolean doOAEPPadding)
    {
        try {
            // Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider rsaAlg = new RSACryptoServiceProvider();

            // Import the RSA Key information. This only needs
            // toinclude the public key information.
            rsaAlg.ImportParameters(rsaKeyInfo);

            // Encrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsaAlg.Encrypt(dataToEncrypt, doOAEPPadding);
        }
        // Catch and display a CryptographicException  
        // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
            return null;
        }
    } //RSAEncrypt

    public static ubyte[] RSADecrypt(ubyte
 dataToDecrypt[], 
        RSAParameters rsaKeyInfo, boolean doOAEPPadding)
    {
        try {
            // Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider rsaAlg = new RSACryptoServiceProvider();

            // Import the RSA Key information. This needs
            // to include the private key information.
            rsaAlg.ImportParameters(rsaKeyInfo);

            // Decrypt the passed byte array and specify OAEP padding.
  
            // OAEP padding is only available on Microsoft Windows XP
 or
            // later.  
            return rsaAlg.Decrypt(dataToDecrypt, doOAEPPadding);
        }
            // Catch and display a CryptographicException  
            // to the console.
        catch (CryptographicException e) {
            Console.WriteLine(e.ToString());
            return null;
        }
    } //RSADecrypt
} //RSACSPSample
.NET Framework のセキュリティ.NET Frameworkセキュリティ
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
RSACryptoServiceProvider クラス
RSACryptoServiceProvider メンバ
System.Security.Cryptography 名前空間
その他の技術情報
暗号サービス

RSACryptoServiceProvider プロパティ


RSACryptoServiceProvider メソッド


パブリック メソッドパブリック メソッド

  名前 説明
パブリック メソッド Clear  AsymmetricAlgorithm クラスによって使用されているすべてのリソース解放します。 ( AsymmetricAlgorithm から継承されます。)
パブリック メソッド Create  オーバーロードされますRSA特定の実装インスタンス化許可します。 ( RSA から継承されます。)
パブリック メソッド Decrypt RSA アルゴリズムデータ復号化ます。
パブリック メソッド DecryptValue オーバーライドされます。 このメソッドは、現在のバージョンではサポートされていません。
パブリック メソッド Encrypt RSA アルゴリズムデータ暗号化ます。
パブリック メソッド EncryptValue オーバーライドされます。 このメソッドは、現在のバージョンではサポートされていません。
パブリック メソッド Equals  オーバーロードされます2 つObject インスタンス等しかどうか判断します。 ( Object から継承されます。)
パブリック メソッド ExportCspBlob RSACryptoServiceProvider オブジェクト関連付けられたキー情報を含む BLOBエクスポートます。
パブリック メソッド ExportParameters オーバーライドされます。 RSAParameters をエクスポートます。
パブリック メソッド FromXmlString  XML 文字列キー情報から RSA オブジェクト初期化します。 ( RSA から継承されます。)
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適してます。 ( 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Type取得します。 ( Object から継承されます。)
パブリック メソッド ImportCspBlob RSA キー情報を表す BLOBインポートます。
パブリック メソッド ImportParameters オーバーライドされます指定した RSAParametersインポートます。
パブリック メソッド ReferenceEquals  指定した複数Object インスタンス同一かどうか判断します。 ( Object から継承されます。)
パブリック メソッド SignData オーバーロードされます指定したデータハッシュ値計算し算出された値に署名します
パブリック メソッド SignHash 指定したハッシュ値秘密キー暗号化することにより、そのハッシュ値署名計算します
パブリック メソッド ToString  現在の Object を表す String返します。 ( Object から継承されます。)
パブリック メソッド ToXmlString  現在の RSA オブジェクト格納している XML 文字列作成して返します。 ( RSA から継承されます。)
パブリック メソッド VerifyData 指定した署名データを、指定したデータに対して計算され署名比較することによって検証します。
パブリック メソッド VerifyHash 指定した署名データを、指定したハッシュ値に対して計算され署名比較することによって検証します。
参照参照

関連項目

RSACryptoServiceProvider クラス
System.Security.Cryptography 名前空間

その他の技術情報

暗号サービス

RSACryptoServiceProvider メンバ

暗号サービス プロバイダ (CSP : Cryptographic Service Provider) によって提供されRSA アルゴリズムの実装使用して非対称暗号化および復号化実行します。このクラス継承できません。

RSACryptoServiceProvider データ型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
  名前 説明
パブリック メソッド RSACryptoServiceProvider オーバーロードされます。 RSACryptoServiceProvider クラス新しインスタンス初期化します。
パブリック プロパティパブリック プロパティ
パブリック メソッドパブリック メソッド
  名前 説明
パブリック メソッド Clear  AsymmetricAlgorithm クラスによって使用されているすべてのリソース解放します。 (AsymmetricAlgorithm から継承されます。)
パブリック メソッド Create  オーバーロードされますRSA特定の実装インスタンス化許可します。 (RSA から継承されます。)
パブリック メソッド Decrypt RSA アルゴリズムデータ復号化ます。
パブリック メソッド DecryptValue オーバーライドされます。 このメソッドは、現在のバージョンではサポートされていません。
パブリック メソッド Encrypt RSA アルゴリズムデータ暗号化ます。
パブリック メソッド EncryptValue オーバーライドされます。 このメソッドは、現在のバージョンではサポートされていません。
パブリック メソッド Equals  オーバーロードされます2 つObject インスタンス等しかどうか判断します。 (Object から継承されます。)
パブリック メソッド ExportCspBlob RSACryptoServiceProvider オブジェクト関連付けられたキー情報を含む BLOBエクスポートます。
パブリック メソッド ExportParameters オーバーライドされます。 RSAParameters をエクスポートます。
パブリック メソッド FromXmlString  XML 文字列キー情報から RSA オブジェクト初期化します。 (RSA から継承されます。)
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適してます。 (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Type取得します。 (Object から継承されます。)
パブリック メソッド ImportCspBlob RSA キー情報を表す BLOBインポートます。
パブリック メソッド ImportParameters オーバーライドされます指定した RSAParametersインポートます。
パブリック メソッド ReferenceEquals  指定した複数Object インスタンス同一かどうか判断します。 (Object から継承されます。)
パブリック メソッド SignData オーバーロードされます指定したデータハッシュ値計算し算出された値に署名します
パブリック メソッド SignHash 指定したハッシュ値秘密キー暗号化することにより、そのハッシュ値署名計算します
パブリック メソッド ToString  現在の Object を表す String返します。 (Object から継承されます。)
パブリック メソッド ToXmlString  現在の RSA オブジェクト格納している XML 文字列作成して返します。 (RSA から継承されます。)
パブリック メソッド VerifyData 指定した署名データを、指定したデータに対して計算され署名比較することによって検証します。
パブリック メソッド VerifyHash 指定した署名データを、指定したハッシュ値に対して計算され署名比較することによって検証します。
参照参照

関連項目

RSACryptoServiceProvider クラス
System.Security.Cryptography 名前空間

その他の技術情報

暗号サービス


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