public void SetPeerKey(BigEndianAdvancingSpan peerKey, ICertificate certificate, SignatureScheme scheme)
{
peerKey = peerKey.ReadVector <ushort>();
var decryptedLength = certificate.Decrypt(scheme, peerKey.ToSpan(), peerKey.ToSpan());
peerKey = peerKey.TakeSlice(decryptedLength);
_premasterSecret = peerKey.ToArray();
}