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AsymmetricAlgorithm.Create Method

Updated: March 2011

Creates an instance of the default implementation of an asymmetric algorithm.

Namespace:  System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)

public static AsymmetricAlgorithm Create()

Return Value

Type: System.Security.Cryptography.AsymmetricAlgorithm
A new RSACryptoServiceProvider instance, unless the default settings have been changed with the <cryptoClass> element.

By default, this overload uses the RSACryptoServiceProvider implementation of the asymmetric algorithm. If you want to specify a different implementation, use the Create overload, which lets you specify an algorithm name, instead.

The following code example demonstrates how to implement the Create method in an extended class. This code example is part of a larger example provided for the AsymmetricAlgorithm class.

// The create function attempts to create a CustomCrypto object using
// the assembly name. This functionality requires modification of the
// machine.config file. Add the following section to the configuration
// element and modify the values of the cryptoClass to reflect what is
// installed in your machines GAC.
//  <cryptographySettings>
//    <cryptoNameMapping>
//      <cryptoClasses>
//        <cryptoClass CustomCrypto="Contoso.CustomCrypto, 
//          CustomCrypto, 
//          Culture=neutral, 
//          PublicKeyToken=fdb9f9c4851028bf, 
//          Version=1.0.1448.27640" />
//      </cryptoClasses>
//      <nameEntry name="Contoso.CustomCrypto" class="CustomCrypto" />
//      <nameEntry name="CustomCrypto" class="CustomCrypto" />
//    </cryptoNameMapping>
//  </cryptographySettings>
new static public CustomCrypto Create() 
    return Create("CustomCrypto");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.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.




March 2011

Corrected the member information.

Customer feedback.