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ECDiffieHellmanCng Constructor (Int32)

Initializes a new instance of the ECDiffieHellmanCng class with a random key pair, using the specified key size.

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

public ECDiffieHellmanCng(
	int keySize


Type: System.Int32

The size of the key. Valid key sizes are 256, 384, and 521 bits.


keySize specifies an invalid length.


Cryptography Next Generation (CNG) classes are not supported on this system.

The random key pair will have the public key length defined by the keySize parameter.

Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008

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