HashAlgorithmType Enumerazione

Definizione

Spazio dei nomi:

System.Security.Authentication

Assembly:

netstandard.dll, System.Net.Primitives.dll

Origine:

SslEnumTypes.cs

Attenzione

KeyExchangeAlgorithm, KeyExchangeStrength, CipherAlgorithm, CipherStrength, HashAlgorithm and HashStrength properties of SslStream are obsolete. Use NegotiatedCipherSuite instead.

Specifica l'algoritmo utilizzato per la generazione di codici di autenticazione dei messaggi.

public enum class HashAlgorithmType

[System.Obsolete("KeyExchangeAlgorithm, KeyExchangeStrength, CipherAlgorithm, CipherStrength, HashAlgorithm and HashStrength properties of SslStream are obsolete. Use NegotiatedCipherSuite instead.", DiagnosticId="SYSLIB0058", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public enum HashAlgorithmType

[<System.Obsolete("KeyExchangeAlgorithm, KeyExchangeStrength, CipherAlgorithm, CipherStrength, HashAlgorithm and HashStrength properties of SslStream are obsolete. Use NegotiatedCipherSuite instead.", DiagnosticId="SYSLIB0058", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type HashAlgorithmType = 

Public Enum HashAlgorithmType

Ereditarietà

Object

ValueType

Enum

HashAlgorithmType

Attributi

ObsoleteAttribute

Campi

Nome	Valore	Descrizione
None	0	Non viene usato alcun algoritmo hash.
Md5	32771	Algoritmo hash MESSAGE Digest 5 (MD5). A causa di problemi di collisione con MD5, Microsoft consiglia SHA-256.
Sha1	32772	Algoritmo SHA1 (Secure Hashing Algorithm). A causa di problemi di collisione con SHA-1, Microsoft consiglia SHA-256.
Sha256	32780	Algoritmo di hash sicuro 2 (SHA-2), che usa un digest a 256 bit.
Sha384	32781	Algoritmo di hash sicuro 2 (SHA-2), che usa un digest a 384 bit.
Sha512	32782	Algoritmo di hash sicuro 2 (SHA-2), che usa un digest a 512 bit.

Esempio

Nell'esempio seguente vengono visualizzate le proprietà di un oggetto SslStream dopo che l'autenticazione è riuscita.

static void AuthenticateCallback( IAsyncResult^ ar )
{
   SslStream^ stream = dynamic_cast<SslStream^>(ar->AsyncState);
   try
   {
      stream->EndAuthenticateAsClient( ar );
      Console::WriteLine( L"Authentication succeeded." );
      Console::WriteLine( L"Cipher: {0} strength {1}", stream->CipherAlgorithm, stream->CipherStrength );
      Console::WriteLine( L"Hash: {0} strength {1}", stream->HashAlgorithm, stream->HashStrength );
      Console::WriteLine( L"Key exchange: {0} strength {1}", stream->KeyExchangeAlgorithm, stream->KeyExchangeStrength );
      Console::WriteLine( L"Protocol: {0}", stream->SslProtocol );
      
      // Encode a test message into a byte array.
      // Signal the end of the message using the "<EOF>".
      array<Byte>^message = Encoding::UTF8->GetBytes( L"Hello from the client.<EOF>" );
      
      // Asynchronously send a message to the server.
      stream->BeginWrite( message, 0, message->Length, gcnew AsyncCallback( WriteCallback ), stream );
   }
   catch ( Exception^ authenticationException ) 
   {
      e = authenticationException;
      complete = true;
      return;
   }

}

static void AuthenticateCallback(IAsyncResult ar)
{
    SslStream stream = (SslStream) ar.AsyncState;
    try
    {
        stream.EndAuthenticateAsClient(ar);
        Console.WriteLine("Authentication succeeded.");
        Console.WriteLine("Cipher: {0} strength {1}", stream.CipherAlgorithm,
            stream.CipherStrength);
        Console.WriteLine("Hash: {0} strength {1}",
            stream.HashAlgorithm, stream.HashStrength);
        Console.WriteLine("Key exchange: {0} strength {1}",
            stream.KeyExchangeAlgorithm, stream.KeyExchangeStrength);
        Console.WriteLine("Protocol: {0}", stream.SslProtocol);
        // Encode a test message into a byte array.
        // Signal the end of the message using the "<EOF>".
        byte[] message = Encoding.UTF8.GetBytes("Hello from the client.<EOF>");
        // Asynchronously send a message to the server.
        stream.BeginWrite(message, 0, message.Length,
            new AsyncCallback(WriteCallback),
            stream);
    }
    catch (Exception authenticationException)
    {
        e = authenticationException;
        complete = true;
        return;
    }
}

Commenti

Questa enumerazione specifica valori validi per la SslStream.HashAlgorithm proprietà .

Vedi anche

• HashStrength