Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

how to protect our firmware?

Status
Not open for further replies.

Sobakava

Full Member level 6
Joined
Mar 27, 2002
Messages
350
Helped
8
Reputation
16
Reaction score
8
Trophy points
1,298
Activity points
3,346
I read about hack attacks of code protections of microcontrollers
(PICs etc.) How safe are the code protections? How to protect
our work from thiefs? :evil:
 

C-Man

Advanced Member level 4
Joined
Jul 19, 2001
Messages
1,059
Helped
90
Reputation
180
Reaction score
17
Trophy points
1,318
Activity points
10,191
As far as I know it is safer to use non flash OTP parts.

They have real fuses for protection inside which can not be recovered by erasing parts of the flash with voltage spikes ...

regards
 

Fragrance

Advanced Member level 4
Joined
Jul 26, 2002
Messages
1,191
Helped
247
Reputation
494
Reaction score
198
Trophy points
1,343
Location
East Of Earth
Activity points
8,916
yes

Hi

I agree with c-man that used the otp part as replacement test your firmware
in flash part and sold your product on otp part

regards
fragrance
 

bunalmis

Full Member level 5
Joined
Jan 3, 2003
Messages
268
Helped
19
Reputation
38
Reaction score
11
Trophy points
1,298
Location
Ireland
Activity points
2,147
Re: yes

You can not keep the firmware from the technology.
 

waterman

Member level 5
Joined
Mar 27, 2002
Messages
80
Helped
2
Reputation
6
Reaction score
2
Trophy points
1,288
Activity points
562
Use a MCU that has EEPROM or flash memory inside
Some MCUs have mechanism to prevent the ROM code
being read out when protected.
 

koky

Full Member level 2
Joined
May 12, 2001
Messages
145
Helped
11
Reputation
22
Reaction score
8
Trophy points
1,298
Location
Italy
Activity points
1,097
I think that also for flash type, read the protected firmware is very difficult, I have read some site about micro hack, but is pure philosopy, I think that if you try to delete eeprom with fuse code you delete all flash memory. Personally prefer spend my time to write a new code that try to read immodificable hex code
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top