Is it possible to program the Microcontroller on the CW305?

Embedded Security ChipWhisperer Software
1

HI，Is it possible to control the MCU on the CW305 to receive the output of the FPGA core?
Thank U

2

Yup, absolutely! In fact, you should be able to use target.fpga_write() and target.fpga_read() to communicate with the FPGA without needing any firmware changes. This uses the usb_data/usb_addr pins from the schematic: https://rtfm.newae.com/Targets/CW305%20Artix%20FPGA/#schematic

If you do need to do communication in another way, the firmware is in chipwhisperer\hardware\victims\cw305_artixtarget\fw\sam3u and can be built with Atmel Studio.

Alex

3

As another quick note on this - we recently pushed out an app-note you can find at http://media.newae.com/appnotes/NAE0010_Whitepaper_CW305_AES_SCA_Attack.pdf that discusses the communication protocol.

You’ll find some nice diagrams like this in it:

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image1367×663 234 KB

4

Thank @Alex_Dewar @coflynn a lot for your helping.

5

Hi, @Alex_Dewar @coflynn

In addition, I want to know that if it’s possible to implement the Vcc glitch with overshoot amplitude.
Thank you!