namespace System.Security.Cryptography
{
    public sealed class ECDiffieHellmanCng : ECDiffieHellman
    {
        public override byte[]! DeriveKeyFromHash(ECDiffieHellmanPublicKey! otherPartyPublicKey, HashAlgorithmName hashAlgorithm, byte[]? secretPrepend, byte[]? secretAppend);
    }
}