/// <summary>
/// Decrypts the specified packet buffer.
/// </summary>
/// <param name="packetBuffer">The packet buffer the way it was received.</param>
/// <returns>The decrypted packet data.</returns>
public byte[] DecryptPacket(byte[] packetBuffer)
{
byte[] iv = Sequence.ReadBlock(packetBuffer, 8, 8);
byte[] encryptedData = Sequence.ReadBlock(packetBuffer, 16, packetBuffer.Length - 10 - 16);
byte[] decryptedData = DesEncryption.DecryptData(encryptedData, iv, Key);
int paddingLength = (decryptedData.Last() + 2);
return(Sequence.ReadBlock(decryptedData, 0, decryptedData.Length - paddingLength));
}
/// <summary>
/// Encrypts the given packet payload data.
/// </summary>
/// <param name="payload">The payload data to be encrypted.</param>
/// <param name="iv">The initialization vector (IV).</param>
/// <returns>The encrypted payload data.</returns>
public byte[] EncryptPacket(byte[] payload, byte[] iv)
{
byte[] paddedData = PadData(payload);
return(DesEncryption.EncryptData(paddedData, iv, Key));
}
