Kinetis protection from reading firmware, decapping?

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Kinetis protection from reading firmware, decapping?

1,174 Views
arhi
Contributor I

Do Kinetis series of MCU's have the protective mesh on top of the mcu so probing after decap gets harder? (something TPU has for e.g.)

I have very little experience with secure applications and now I'm supposed to make device where it is very important firmware is not extracted so I was looking for different tamper proof solutions and found Kinetis to be interesting. K2 series especially, but I'm unable to find answer to two basic questions


1. how "tamper protection" actually works (can mcu detect tampering if there's no voltage source available? no battery backup, supercap etc? I guess cannot but .. read in few places that something is automatically erased on tamper so..). Some link to a document is highly appreciated :smileygrin:

2. protection from break-ic, mikatech, mikahk and similar "services", what is the hardware protection of the kinetis mcu series? Is there a intrusion detection mesh on top of the die or anything else? Here: https://cache.freescale.com/files/32bit/doc/prod_brief/K70PB.pdf I read that there is " Active wire-mesh tamper detect " but I don't see anywhere what that actually is :smileysad: and how does it work?! so explanation or "where to read info about it" is appreciated :smileyhappy:

Cortex M4 with USB is what I am looking for 150-180MHz, ideally tqfp for start (later I can move to bigger ones with bga package but for initial tests tqfp is hand solderable) so a suggestion of "secure" chip if I'm not looking in the right direction ... :smileygrin:

thanks
arhi

0 Kudos
4 Replies

866 Views
jingpan
NXP TechSupport
NXP TechSupport

Of course. You can find TWR-K65F180M, TWR-POS-K81, TWR-K70F120M.

0 Kudos

866 Views
jingpan
NXP TechSupport
NXP TechSupport

Hi arhi,

In K2x serial, only K21 has ther tamper protect function. Information about security-related modules is not included in open document and is available only after a nondisclosure agreement (NDA) has been signed. To request an
NDA, please contact your local NXP sales representative.

If 150M above is must, K65,K70,K81 can meet your demand.

Regards

0 Kudos

866 Views
arhi
Contributor I

 btw any demo boards available with K65/K70/K81 ?

0 Kudos

866 Views
arhi
Contributor I

Thanks for the answer. I will never understand the point of hiding documentation behind NDA but what can I do about it :smileygrin:..

Going to check K65,K70 and K81 - many thanks!

all best

a.

0 Kudos