DSASignatureFormatter 類別

定義

命名空間:

System.Security.Cryptography

組件:

System.Security.Cryptography.dll

來源:

DSASignatureFormatter.cs

建立數位簽章演算法 (DSA) 簽章。

public ref class DSASignatureFormatter : System::Security::Cryptography::AsymmetricSignatureFormatter

public class DSASignatureFormatter : System.Security.Cryptography.AsymmetricSignatureFormatter

type DSASignatureFormatter = class
    inherit AsymmetricSignatureFormatter

Public Class DSASignatureFormatter
Inherits AsymmetricSignatureFormatter

繼承

Object

AsymmetricSignatureFormatter

DSASignatureFormatter

範例

#using <System.dll>

using namespace System;
using namespace System::Security::Cryptography;
int main()
{
   try
   {
      
      //Create a new instance of DSA.
      DSA^ DSA = DSA::Create();
      
      //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 
      //DSA instance 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 );
   }

}

using System;
using System.Security.Cryptography;

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

            //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 
            //DSA instance 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);
        }
    }
}

Imports System.Security.Cryptography

 _

Class DSASample


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

            '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 
            'DSA instance 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

備註

重要

DSA 演算法的建立者已撤銷其支援。 請考慮使用 RSA 類別或 ECDsa 類別，而不是類別 DSA 。 DSA僅用於與舊版應用程式和數據的相容性。

建構函式

DSASignatureFormatter()	初始化 DSASignatureFormatter 類別的新執行個體。
DSASignatureFormatter(AsymmetricAlgorithm)	使用指定的金鑰，初始化 DSASignatureFormatter 類別的新執行個體。

方法

CreateSignature(Byte[])	對指定的資料建立數位簽章演算法 (DSA) PKCS #1 的簽章。
CreateSignature(HashAlgorithm)	建立指定雜湊值的簽章。 (繼承來源 AsymmetricSignatureFormatter)
Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設雜湊函式。 (繼承來源 Object)
GetType()	取得目前執行個體的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object 的淺層複製。 (繼承來源 Object)
SetHashAlgorithm(String)	指定數位簽章演算法 (DSA) 簽章格式子 (Formatter) 的雜湊演算法。
SetKey(AsymmetricAlgorithm)	指定要使用於數位簽章演算法 (DSA) 簽章格式子的金鑰。
ToString()	傳回代表目前物件的字串。 (繼承來源 Object)

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