DSASignatureFormatter 类

定义

命名空间:

System.Security.Cryptography

程序集:

System.Security.Cryptography.dll

Source:

DSASignatureFormatter.cs

创建数字签名算法 (DSA) 签名。

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

继承

Object

AsymmetricSignatureFormatter

DSASignatureFormatter

示例

#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

注解

重要

DSA 算法的创建者已经撤回了对它的支持。 请考虑使用 RSA 类或 ECDsa 类而不是 DSA 类。 仅用于 DSA 与旧应用程序和数据的兼容性。

构造函数

DSASignatureFormatter()	初始化 DSASignatureFormatter 类的新实例。
DSASignatureFormatter(AsymmetricAlgorithm)	使用指定的密钥初始化 DSASignatureFormatter 类的新实例。

方法

CreateSignature(Byte[])	为指定的数据创建数字签名算法 (DSA) PKCS #1 签名。
CreateSignature(HashAlgorithm)	使用指定哈希值创建签名。 (继承自 AsymmetricSignatureFormatter)
Equals(Object)	确定指定对象是否等于当前对象。 (继承自 Object)
GetHashCode()	作为默认哈希函数。 (继承自 Object)
GetType()	获取当前实例的 Type。 (继承自 Object)
MemberwiseClone()	创建当前 Object 的浅表副本。 (继承自 Object)
SetHashAlgorithm(String)	指定数字签名算法 (DSA) 签名格式化程序的哈希算法。
SetKey(AsymmetricAlgorithm)	指定用于数字签名算法 (DSA) 签名格式化程序的密钥。
ToString()	返回表示当前对象的字符串。 (继承自 Object)

另请参阅

• 加密服务