Products > Test Equipment
Sniffing the Rigol's internal I2C bus
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psysc0rpi0n:

--- Quote from: hammy on October 15, 2016, 06:13:16 pm ---
--- Quote from: psysc0rpi0n on October 15, 2016, 06:07:38 pm ---I haven't asked anyone to generate license keys. If anyone is kind enough to do that, I can provide a link to my memory dump!

--- End quote ---

Excellent!  :-+ Please prepare that link.
Ok, I reinstalled my raspi some time ago, but I can setup this stuff again. I get in touch with you tomorrow via pm ...

--- End quote ---

Many thanks... The link is ready. Let me tell you that I was able to generate the keys but none was accepted by the scope! Not sure if this changes anything!
hammy:
I tried to generate license-keys for psysc0rpi0n. Unfortunately they are not valid.  :-//
Is anyone out there who was successful to generate these license-keys with a recent MSO? Maybe anyone would be so kind to give it a try with psysc0rpi0n's dump?

Cheers
hammy

qwertymodo:
The problem is likely with the dump itself. As I stated before, my suspicion is that they added code to clear the memory after verifying the installed keys, which is why the timing of the dump affects the results (you need to halt the scope after the keys are loaded but before they are cleared). If that is the case, it's not going to matter how many people try with the same dump, because the dump itself is no good.

Sent from my m8wl using Tapatalk

psysc0rpi0n:

--- Quote from: qwertymodo on October 15, 2016, 10:32:19 pm ---The problem is likely with the dump itself. As I stated before, my suspicion is that they added code to clear the memory after verifying the installed keys, which is why the timing of the dump affects the results (you need to halt the scope after the keys are loaded but before they are cleared). If that is the case, it's not going to matter how many people try with the same dump, because the dump itself is no good.

Sent from my m8wl using Tapatalk

--- End quote ---
And is that timing known? The dump I have was taken right after the Rigol logo disappear...  Was this the timing you talked about?
If I try to take the dump at any other timing, rigol tool will find no keys...

Sent from my GT-I9505 using Tapatalk
qwertymodo:
No, the timing is not known, and I'm only guessing about that even being how it works. Sorry.

Sent from my m8wl using Tapatalk

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