You cannot prevent it. But you can make it
harder:
1. write messy code and implement messy
hardware.
2. put a EEPROM with a fixed value and
different on each board. encode a portion of your program using the code.
3. make the product dirt cheap so there is no
incentive to copy.
that is all I can think of.
-Andrew
----- Original Message -----
From: Rodrigo Rivas
To: c...@yahoogroups.com
Sent: Thursday, August 21, 2003 12:56 PM
Subject: [c54x] Firmware Protection
Hi ,
How do you protect the firmware in your custom boards ?
In our custom board, there is an external Flash in which reside the
firmware. The firmware can fit in the on-chip RAM of the C5416, then after
bootloading, the C5416 run from on-chip RAM.
Then the problem is how to protect the firmware that reside in the external
Flash against copies ?
any help is welcome
Thanks in advance
Rodrigo Rivas
_____________________________________ Note: If you do a simple "reply" with your email client, only the author of
this message will receive your answer. You need to do a "reply all" if you
want your answer to be distributed to the entire group.
_____________________________________ About this discussion group:
To Join: Send an email to c...@yahoogroups.com
To
Post: Send an email to c...@yahoogroups.com
To Leave: Send an
email to c...@yahoogroups.com
Archives:
http://www.yahoogroups.com/group/c54x
Other Groups:
http://www.dsprelated.com
">Yahoo! Terms of
Service.
|