Hi,
import chipwhisperer as cw
I am getting the error “OSError: Unable to communicate with found ChipWhisperer. Check that another process isn’t connected to it and that you have permission to communicate with it.”
I can see the USB connection in VM that it is recognised.
Any help is much appreciated. Thank you.
Hi,
What’s the output of lsusb -v in the VM?
I didnt need to login to the VM i am accessing the jupyter from my local machine google chrome by using address localhost:8888. I still logged in the VM and results are shown below. I am not able to move up tho.
Let me know if it is of any help.
In that case, try running the following in a jupyter notebook:
%%bash
lsusb -v
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 010: ID 2b3e:ace0
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Hm, you should be able to access the device. Have you been able to connect to it at all, or you do always get that error?
I dont know what happened but now i am seeing the below error. I connected the CW and entered the commands.
import chipwhisperer as cw
That is all i did.
Everything looks like it’s working fine now. That’s just a warning telling you that a new firmware version is available. I recommend updating, but you can probably continue without doing that. We have instructions for pre 5.6 ChipWhisperer firmware upgrade here: https://chipwhisperer.readthedocs.io/en/latest/api.html#api-scope-update
Alex
If you dont mind can you point me to a project which is CWnano i can try ? CPA attack on AES using CWnano. I am trying to use this https://github.com/newaetech/chipwhisperer-jupyter/blob/master/1%20-%20Connecting%20to%20Hardware.ipynb which is actually failing at Building and Uploading Firmware stage. It would be of great help if you can show me a project like that for CWnano. Thank you.
Have you set the PLATFORM variable there?
Sandeep
October 21, 2021, 8:21pm
11
Do you mean cw ?
When i executed the below command
%%bash
below is the error
But in jupyter i can see there is a path till simpleserial-base and there are two file “makefile” and “simpleserial-base.c”.
What happens if you run
%%bash
pwd
EDIT:
also try running
%%bash
ls ../
ls ../hardware/victims/firmware
Sandeep
October 21, 2021, 8:32pm
13
If i run pwd
Should i disconnect the board and run the building and uploading firmware ? i see it says in a note to disconnect the board could that be the reason ?
No this is unrelated. You seem to be one directory up for some reason (should be /home/vagrant/works/projects/chipwhisperer/jupyter). Try modifying
%%bash
cd ../hardware/victims/firmware/simpleserial-base/
make PLATFORM= CRYPTO_TARGET=NONE
to
%%bash
cd hardware/victims/firmware/simpleserial-base/
make PLATFORM= CRYPTO_TARGET=NONE
Sandeep
October 21, 2021, 9:32pm
15
I think its working . I will reach out if there are any issues. Thank you so much.
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