/// <summary>
/// Initializes a new instance of OutPacket from the given payload data, crypto handler, auth handler, prefix and count.
/// </summary>
/// <param name="payload">The ready payload data.</param>
/// <param name="crypto">The crypto handler to be used.</param>
/// <param name="auth">The auth handler to be used.</param>
/// <param name="prefix">The packet's prefix.</param>
/// <param name="count">The packet's count.</param>
public OutPacket(byte[] payload, CryptoHandler crypto, AuthHandler auth, short prefix, int count)
{
byte[] packetPrefix = LittleEndian.GetBytes(prefix);
byte[] packetCount = LittleEndian.GetBytes(count);
byte[] iv = Generate.IV();
byte[] encryptedData = crypto.EncryptPacket(payload, iv);
byte[] size = LittleEndian.GetBytes(Convert.ToInt16(16 + encryptedData.Length + 10));
byte[] authData = Sequence.Concat(packetPrefix, packetCount, iv, encryptedData);
byte[] hmac = auth.GetHmac(authData);
PacketData = Sequence.Concat(size, authData, hmac);
}