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ECDiffieHellman.Create Method (String)

Creates a new instance of the specified implementation of the Elliptic Curve Diffie-Hellman (ECDH) algorithm.

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

'Declaration
Public Shared Function Create ( _
	algorithm As String _
) As ECDiffieHellman

Parameters

algorithm
Type: System.String

The name of an implementation of the ECDH algorithm. The following strings all refer to the same implementation, which is the only implementation currently supported in the .NET Framework:

- "ECDH"

- "ECDiffieHellman"

- "ECDiffieHellmanCng"

- "System.Security.Cryptography.ECDiffieHellmanCng"

You can also provide the name of a custom ECDH implementation.

Return Value

Type: System.Security.Cryptography.ECDiffieHellman
A new instance of the specified implementation of this class. If the specified algorithm name does not map to an ECDH implementation, this method returns Nothing.

ExceptionCondition
ArgumentNullException

The algorithm parameter is Nothing.

If you develop your own implementation of an ECDiffieHellman object, you can use the Create(String) method overload to create a custom algorithm string that specifies your implementation.

If you specify a custom value for the algorithm parameter, the CryptoConfig object will use it to determine whether an ECDH object can be created.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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