DSASignatureDeformatter クラス

定義

デジタル署名アルゴリズム (DSA: Digital Signature Algorithm) PKCS#1 Version 1.5 署名を検証します。Verifies a Digital Signature Algorithm (DSA) PKCS#1 v1.5 signature.

public ref class DSASignatureDeformatter : System::Security::Cryptography::AsymmetricSignatureDeformatter
[System.Runtime.InteropServices.ComVisible(true)]
public class DSASignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
type DSASignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
Public Class DSASignatureDeformatter
Inherits AsymmetricSignatureDeformatter
継承
DSASignatureDeformatter
属性

#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 );
      
      //Create an DSASignatureDeformatter object and pass it the 
      //DSACryptoServiceProvider to transfer the key information.
      DSASignatureDeformatter^ DSADeformatter = gcnew DSASignatureDeformatter( DSA );
      
      //Verify the hash and display the results to the console.
      if ( DSADeformatter->VerifySignature( Hash, SignedHash ) )
      {
         Console::WriteLine( "The signature was verified." );
      }
      else
      {
         Console::WriteLine( "The signature was not verified." );
      }
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

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);

            //Create an DSASignatureDeformatter object and pass it the 
            //DSACryptoServiceProvider to transfer the key information.
            DSASignatureDeformatter DSADeformatter = new DSASignatureDeformatter(DSA);

            //Verify the hash and display the results to the console.
            if(DSADeformatter.VerifySignature(Hash, SignedHash))
            {
                Console.WriteLine("The signature was verified.");
            }
            else
            {
                Console.WriteLine("The signature was not verified.");
            }

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

}
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)

            'Create an DSASignatureDeformatter object and pass it the 
            'DSACryptoServiceProvider to transfer the key information.
            Dim DSADeformatter As New DSASignatureDeformatter(DSA)

            'Verify the hash and display the results to the console.
            If DSADeformatter.VerifySignature(Hash, SignedHash) Then
                Console.WriteLine("The signature was verified.")
            Else
                Console.WriteLine("The signature was not verified.")
            End If

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

コンストラクター

DSASignatureDeformatter()

DSASignatureDeformatter クラスの新しいインスタンスを初期化します。Initializes a new instance of the DSASignatureDeformatter class.

DSASignatureDeformatter(AsymmetricAlgorithm)

指定したキーで、DSASignatureDeformatter クラスの新しいインスタンスを初期化します。Initializes a new instance of the DSASignatureDeformatter class with the specified key.

メソッド

Equals(Object)

指定されたオブジェクトが現在のオブジェクトと等しいかどうかを判定します。Determines whether the specified object is equal to the current object.

(継承元 Object)
GetHashCode()

既定のハッシュ関数として機能します。Serves as the default hash function.

(継承元 Object)
GetType()

現在のインスタンスの Type を取得します。Gets the Type of the current instance.

(継承元 Object)
MemberwiseClone()

現在の Object の簡易コピーを作成します。Creates a shallow copy of the current Object.

(継承元 Object)
SetHashAlgorithm(String)

デジタル署名アルゴリズム (DSA) 署名逆フォーマッタのハッシュ アルゴリズムを指定します。Specifies the hash algorithm for the Digital Signature Algorithm (DSA) signature deformatter.

SetKey(AsymmetricAlgorithm)

デジタル署名アルゴリズム (DSA) 署名逆フォーマッタで使用するキーを指定します。Specifies the key to be used for the Digital Signature Algorithm (DSA) signature deformatter.

ToString()

現在のオブジェクトを表す string を返します。Returns a string that represents the current object.

(継承元 Object)
VerifySignature(Byte[], Byte[])

データのデジタル署名アルゴリズム (DSA) 署名を検証します。Verifies the Digital Signature Algorithm (DSA) signature on the data.

VerifySignature(HashAlgorithm, Byte[])

指定されたハッシュ値から署名を検証します。Verifies the signature from the specified hash value.

(継承元 AsymmetricSignatureDeformatter)

適用対象

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