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Software accompanying the paper "Single-Trace Attacks on Keccak" which will be published in the IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES) 2020 Issue 3.

Authors:

The paper is available at: https://eprint.iacr.org/2020/371.pdf

Usage

All simulation results were obtained using the provided code.

Installation

python3 -m pip install -r requirements.txt --user installs the required packages.

Running Simulations

Change to directory keccak-p/ and run python3 bp.py. Alternatively, call ./inst_generic_xxx_xxx.sh for one of the predefined scenarios.

Important command line parameters for simulation: -l: lane length. default = 64 (keccak-f[1600]) -s: sigma for noisy Hamming weight. default = 1.0 -w: processor wordsize. default = 8 -c: clustersize. default = 8. Supported are 1, 8, 16 -r: number of simulated keccak-f rounds. default = 2 -d: damping factor alpha. default = 0.75 -i: maximum number of belief-propagation iterations. default = 50

--istate: input state as 1600bit hexstring. --imask: separate input bits to known and unknown parts. 1600bit hexstring. 1 = known bit, 0 = unknown bit --fmask: separate output bits to known and unknown parts. 1600bit hexstring. 1 = known bit, 0 = unknown bit. default all zero, due to typically simulating only a small number of rounds. Shortcuts for above parameters: R = fully random, 0 = all zero, supports python string expansion, e.g., "RR"*16 + "00"*(200-16) sets first 16 bytes random, others to zero

--seed: allows specifying a randomness seed (32bit hexstring) for rerunning specific simulations

License

All files in this repository fall under the CC0 Public Domain dedication.

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