Attack DSP Chip by chemical decapsulation, through which it will be able to get access to the databus of microcontroller memory and extract encrypted code from flash and eeprom memory;
Attack DSP Chip by chemical decapsulation, through which it will be able to get access to the databus of microcontroller memory and extract encrypted code from flash and eeprom memory;
The acid residues can be removed from the etched plastic and from the chip surface by ultrasonic treatment. For that the chip is placed into a beaker with acetone and then put in an ultrasonic bath for 1–3 minutes. After washing the chip with acetone and drying it in an air jet, we have a clean and fully operational chip.