Encrypt and Decrypt the code

[Orezpek]

Hi all,

Is there a way to protect or secure the programming code inside a PIC microcontroller by using some cryptographic algorithms.

The code is written in C language.

I’d be thankful to get your help!

[Ashutosh Bhatt]

you can only protect the code by disabling further reading of EEPROM

you can lock EEPROM so that it can not be read. but it can be erased and reprogrammed

[Orezpek]

Thanks Phatt for your reply. you are right!

This is one way. Have you tried to use AES or DES algorithms to de/encrypt the code from being altered during transmission.

As you know, if we have any code and we want to protect the transmitted data from being modified we almost use strong cipher algorithms such as AES or DES. Do you think we can do that when we have sender and reciever microcontrollers (modules)? 

Thanks again!

[Ashutosh Bhatt]

what u r talking now is completely different from wht u hv asked earlier

encryption and decryption in transmission and reception is completely different field

there are so many algorighthms. you can make ur own encryption-decryption method using your program code. or else you can implement any standard algorithm in C language. 

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