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Ponys Microcontroller Tools - Encryption and Decryption Example

What do i see in the video above?
On the right you see the encrypted composite, on the left you see the decrypted composite

• Choose any integer as the key (Available range: -16,000,000 to +16,000,000)
  
• floats loose a tiny bit of precision (< 1%)

Because of the limited characters and the limited performance of lua ingame, it is impossible to effectively implement currently used algorithms (both symetric and asymetric).
Even worse, in lua we have no access to the raw float bits, which makes number encryption even harder.

Algorithm (simplyfied):
Every tick, a random number m is generated.
The original value (e.g. channel 1 = 3.141) is now modified.

• We ensure that m is a high value, but also has some decimals.
  This is mandatory, because its not helpfull if gps coordinates are encrypted from (x=876,y=123.2) to (x=875.5,y=122.7).
  
• Same rule applies for very small values (e.g. battery level) which would be encrypted from (b=0.25) to (b=9000.25).
  
• By changing m every tick, we make sure people cannot guess a value by observing its change over time.
  
• By adding the channel id we also make sure, that we effectively never use the same modifier m twice. This makes sure, that even if two input values are corelated (e.g. fuel in tank 1 and fuel in tank 2) its very hard to spot that corelation in the encrypted data.
  
• The last thing we do is, we shift the channels. This ensures, that even if someone knows on which channel a guessable value would be sent, the encrypted composite does not have this encrypted value on the same channel. This prevents attacks by guessing an original value (e.g. altitude of a vehicle).

Encryption
Decryption


https://steamhost.cn/steamcommunity_com/workshop/filedetails/?id=2080346369

I will put your name in here, and if you also can develop a fix i will update the microcontroller ;)