DSASignatureFormatter.SetHashAlgorithm メソッドとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

DSASignatureFormatter.SetHashAlgorithm メソッド

デジタル署名アルゴリズム (DSA) 署名フォーマッタのハッシュアルゴリズムを指定します。

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

Visual Basic (宣言)

Public Overrides Sub SetHashAlgorithm
 ( _
    strName As String _
)

Visual Basic (使用法)

Dim instance As DSASignatureFormatter
Dim strName As String

instance.SetHashAlgorithm(strName)

public override void SetHashAlgorithm (
    string strName
)

C++

public:
virtual void SetHashAlgorithm (
    String^ strName
) override

public void SetHashAlgorithm (
    String strName
)

JScript

public override function SetHashAlgorithm (
    strName : String
)

パラメータ

strName: 署名フォーマッタで使用するハッシュアルゴリズムの名前。

例外

例外の種類	条件
CryptographicUnexpectedOperationException	strName パラメータが、SHA1 ハッシュアルゴリズムに割り当てられません。

使用例

Visual Basic

Imports System
Imports System.Security.Cryptography

 _

Class DSASample


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

            '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 DSASignatureFormatter object and pass it the
 
            'DSACryptoServiceProvider to transfer the key information.
            Dim DSAFormatter As New
 DSASignatureFormatter(DSA)

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

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

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

using System;
using System.Security.Cryptography;

class DSASample
{
        
    static void Main()
    {
        try
        {
            //Create a new instance of DSACryptoServiceProvider.
            DSACryptoServiceProvider DSA = new DSACryptoServiceProvider();

            //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 DSASignatureFormatter object and pass it the
 
            //DSACryptoServiceProvider to transfer the key information.
            DSASignatureFormatter DSAFormatter = new DSASignatureFormatter(DSA);

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

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

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

}

C++

#using <System.dll>

using namespace System;
using namespace System::Security::Cryptography;
int main()
{
   try
   {
      
      //Create a new instance of DSACryptoServiceProvider.
      DSACryptoServiceProvider^ DSA = gcnew DSACryptoServiceProvider;
      
      //The hash to sign.
      array<Byte>^Hash = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100
,197,213,134,130,135};
      
      //Create an DSASignatureFormatter Object* and pass it the 
      //DSACryptoServiceProvider to transfer the key information.
      DSASignatureFormatter^ DSAFormatter = gcnew DSASignatureFormatter( DSA );
      
      //Set the hash algorithm to SHA1.
      DSAFormatter->SetHashAlgorithm( "SHA1" );
      
      //Create a signature for HashValue and return it.
      array<Byte>^SignedHash = DSAFormatter->CreateSignature( Hash );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

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

class DSASample
{
    public static void main(String[]
 args)
    {
        try {
            // Create a new instance of DSACryptoServiceProvider.
            DSACryptoServiceProvider dsa = new DSACryptoServiceProvider();

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

            // Create an DSASignatureFormatter object and pass it the
 
            // DSACryptoServiceProvider to transfer the key information.
            DSASignatureFormatter dsaFormatter = new DSASignatureFormatter(dsa);

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

            // Create a signature for HashValue and return it.
            ubyte signedHash[] = dsaFormatter.CreateSignature(hash);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //main
} //DSASample