RSAPKCS1SignatureFormatter.SetHashAlgorithm メソッド

署名の作成に使用するハッシュ アルゴリズムを設定します。

Overrides Public Sub SetHashAlgorithm( _
   ByVal strName As String _)
[C#]
public override void SetHashAlgorithm(stringstrName);
[C++]
public: void SetHashAlgorithm(String* strName);
[JScript]
public override function SetHashAlgorithm(
   strName : String);

パラメータ

• strName
  署名の作成に使用するハッシュ アルゴリズムの名前。

解説

CreateSignature を呼び出す前に、ハッシュ アルゴリズムを設定する必要があります。

使用例

 
Imports System
Imports System.Security.Cryptography

 _

Class RSASample


    Shared Sub Main()
        Try
            'Create a new instance of RSACryptoServiceProvider.
            Dim RSA As New RSACryptoServiceProvider()

            'The hash to sign.
            Dim Hash As Byte() = {59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135}

            'Create an RSAOPKCS1SignatureFormatter object and pass it the 
            'RSACryptoServiceProvider to transfer the key information.
            Dim RSAFormatter As New RSAPKCS1SignatureFormatter(RSA)

            'Set the hash algorithm to SHA1.
            RSAFormatter.SetHashAlgorithm("SHA1")

            'Create a signature for HashValue and return it.
            Dim SignedHash As Byte() = RSAFormatter.CreateSignature(Hash)


        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub
End Class

[C#] 
using System;
using System.Security.Cryptography;

class RSASample
{
        
    static void Main()
    {
        try
        {
            //Create a new instance of RSACryptoServiceProvider.
            RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

            //The hash to sign.
            byte[] Hash = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100,197,213,134,130,135};

            //Create an RSAOPKCS1SignatureFormatter object and pass it the 
            //RSACryptoServiceProvider to transfer the key information.
            RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);

            //Set the hash algorithm to SHA1.
            RSAFormatter.SetHashAlgorithm("SHA1");

            //Create a signature for HashValue and return it.
            byte[] SignedHash = RSAFormatter.CreateSignature(Hash);


        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);
        }
    }

}

[C++] 
#using <mscorlib.dll>
#using <System.dll>

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

int main() {
    try {
        //Create a new instance of RSACryptoServiceProvider.
        RSACryptoServiceProvider* RSA = new RSACryptoServiceProvider();

        //The hash to sign.
        Byte Hash[] = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100,197,213,134,130,135};

        //Create an RSAOPKCS1SignatureFormatter object and pass it the 
        //RSACryptoServiceProvider to transfer the key information.
        RSAPKCS1SignatureFormatter* RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);

        //Set the hash algorithm to SHA1.
        RSAFormatter->SetHashAlgorithm(S"SHA1");

        //Create a signature for HashValue and return it.
        Byte SignedHash[] = RSAFormatter->CreateSignature(Hash);
    } catch (CryptographicException* e) {
        Console::WriteLine(e->Message);
    }
}

[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン をクリックします。

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

参照

RSAPKCS1SignatureFormatter クラス | RSAPKCS1SignatureFormatter メンバ | System.Security.Cryptography 名前空間 | 暗号サービス