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