CipherAlgorithmType Enumeration

Defines the possible cipher algorithms for the SslStream class.

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

'Declaration
Public Enumeration 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.
NullNo encryption is used with a Null cipher algorithm.

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

The following example displays the properties of an SslStream.


		Private Shared Sub AuthenticateCallback(ByVal ar As IAsyncResult)
			Dim stream As SslStream = CType(ar.AsyncState, SslStream)
			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>".
				Dim message() As Byte = Encoding.UTF8.GetBytes("Hello from the client.<EOF>")
				' Asynchronously send a message to the server.
				stream.BeginWrite(message, 0, message.Length, New AsyncCallback(AddressOf WriteCallback), stream)
			Catch authenticationException As Exception
				e = authenticationException
				complete = True
				Return
			End Try
		End Sub


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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