CipherAlgorithmType Enumeration

Defines the possible cipher algorithms for the SslStream class.

Namespace:  System.Security.Authentication
Assembly:  System (in System.dll)

public enum CipherAlgorithmType

Member nameDescription
NoneNo encryption algorithm is used.
Rc2Rivest's Code 2 (RC2) algorithm.
Rc4Rivest's Code 4 (RC4) algorithm.
DesThe Data Encryption Standard (DES) algorithm.
TripleDesThe Triple Data Encryption Standard (3DES) algorithm.
AesThe Advanced Encryption Standard (AES) algorithm.
Aes128The Advanced Encryption Standard (AES) algorithm with a 128 bit key.
Aes192The Advanced Encryption Standard (AES) algorithm with a 192 bit key.
Aes256The Advanced Encryption Standard (AES) algorithm with a 256 bit key.

This enumeration specifies valid values for the SslStream.CipherAlgorithm property.

The following example displays the properties of an SslStream.

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;
    }
}
static void AuthenticateCallback(IAsyncResult* ar)
{
    SslStream* stream = dynamic_cast<SslStream*> (ar->AsyncState);
    try 
    {
        stream->EndClientAuthenticate(ar);
        Console::WriteLine(S"Authentication succeeded.");
        Console::WriteLine(S"Cipher: {0} strength {1}", __box(stream->CipherAlgorithm), __box(stream->CipherStrength));
        Console::WriteLine(S"Hash: {0} strength {1}", __box(stream->HashAlgorithm), __box(stream->HashStrength));
        Console::WriteLine(S"Key exchange: {0} strength {1}", __box(stream->KeyExchangeAlgorithm), __box(stream->KeyExchangeStrength));
        Console::WriteLine(S"Protocol: {0}", __box(stream->SslProtocol));
        // Encode a test message into a byte array.
        // Signal the end of the message using the "<EOF>".
        Byte message[] = Encoding::UTF8->GetBytes(S"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;
    }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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