This is a C++ implementation of the LowMC block cipher family. The
parameters (block size, number of S-boxes in the substitution layer, number
of rounds, key size) are defined in LowMC.h. Compilation requires support
of C++11 features.
The files LowMC.h and LowMC.cpp contain the relevant code. test.cpp
contains a short example usage.
The file determine_rounds.py contains a Python script that determines
the number of rounds needed for LowMC to be secure in dependence on
the other parameters: the block size n, the number of S-boxes per layer m,
the log2 of the allowed data complexity d, and the key size k.
Example usage: python3 determine_rounds.py 256 63 128 128
run make; ./test Encryptions russianFlag cacheSize graySize grayTables
Using 4 russians method with a cache size of blocksize / 256 , Gray codes of 8 bit length and 1 Gray table
./test 10000 1 256 8 1
Encrypting 10000 with classic bitsets ./test 10000 0 256 8 1