Demo of power analysis against unmasked tiny AES

A demo for power analysis against unmasked tiny-AES running on an ARM M3 processor

Info

• Captured traces: 16 Sbox in the first round, 625*32ns=20us
• Target device: LPC1313 12MHz working frequency
• Target implementation: Tiny-AES at https://github.com/kokke/tiny-AES-c
• Target leakage: first round Sbox output
• Attack methodology: Hamming Weight CPA

Requirements

Python3 + numpy + scipy.stats + matplotlib

Directory organisation

• Acquisition/: files for trace acquistion with picoscope 2000 series
• TinyAES: Tiny-AES fitted to the SCALE boards' setup
• AESAttack.py: python3 script for running the demo
• TRSReader.py: TRS reading library for AESAttack.py
• README.md: This file

Combine of acquisition and attack

• Need sudo on linux
• Need picoscope (software; not SDK) installed
• python library pyserial + (time, random, secrets)
• Acquisition setup: channel B 2V trigger/5V range, repeat posedge 10%, 100us/div; channel A 1V range
• Once a while, the program will run 50 encryptions, whereas the scope shows the traces