net481 
namespace System.Security.Cryptography
{
    public sealed class X25519DiffieHellmanCng : X25519DiffieHellman
    {
        public CngKey! GetKey();
    }
}
Design Reviews
.NET Framework
4.6.24.74.7.14.7.24.84.8.1
Information specific to net481
Assembly

Microsoft.Bcl.Cryptography , Version=11.0.0.0, PublicKeyToken=cc7b13ffcd2ddd51

Referencing

Your project needs a package reference to Microsoft.Bcl.Cryptography.

Package Microsoft.Bcl.Cryptography (11.0.0-rc.2.26504.105) net462
Preview This API is contained in a prerelease package.
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