Currently there are two ways to decrypt the IC chip,
one is software-based, to some software means, such as self-similar device programmer, this method does not destroy the master (decrypted chip is not encrypted);
there is a It is mainly hardware and auxiliary software. This method needs to peel off the mother film (opening or decapsulation), and then modify the circuit (usually called FIB: focused ion beam), which destroys the chip structure and chip tube. The core circuit only affects the encryption function, and does not change the function of the chip itself.
dsPIC33FJ128GP202 chip decryption We generally use the method of hard decryption, destroying the program inside the chip extraction.