Is it possible to secure I2C communication between slave and master so nobody else can connect their devices to the master. Basically encrypting the message.
Is this feasible by software or hardware?
Note: I have a sensor that connects to ADC(there are amplifier and filter before this) which I communicate with I2C to read the sensor data. I would like to make sure nobody can use my sensor without my controller.
Base on everyone feedback I will try to use a microcontroller with precision ADC to send data. but does anybody know a small and cheap microcontroller that has precision ADC with I2C port?