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SslStream.CipherAlgorithm Property

Gets a value that identifies the bulk encryption algorithm used by this SslStream.

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

public virtual CipherAlgorithmType CipherAlgorithm { get; }


The CipherAlgorithm property was accessed before the completion of the authentication process or the authentication process failed.

A value of Null is required for the CipherAlgorithm property when the NoEncryption enumeration value is used to construct a SslStream instance.

Windows Server 2003 and Windows XP do not support the Null value. So even if the Null value is used to construct the SslStream instance, the EncryptionPolicy property will be None. The Null value is only returned on Windows Vista and later.

The following code example displays the cryptography settings for the specified stream.

static void DisplaySecurityLevel(SslStream stream)
   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);

.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.