public SecureSession CreateSession(IPAddress clientIp) { var sess = new SecureSession(clientIp); // At some point Sessions was a List //Sessions.Add(sess); // We could, in theory, have a collision of sessions. // I'm going to take that risk. // We need to hash(hashed_sequence + session_id) // Both of these are byte arrays, so we need to build a bigger byte array. // Then clear that byte array once we no longer need it. byte[] hashedId = HashUtils.HashBytes(HashUtils.ConcatByteArrays(_sequence, sess.SessionId)); Sessions.TryAdd(HashUtils.ByteArrayToHexString(hashedId), sess); HashUtils.ClearByteArray(hashedId); return(sess); }