LCS-based-code-plagiarism-detector

Introduction

This Longest Common Subsequence based detector tries to detect plagiarism in short programs like programming assignments. It considers similarity for both LLVM basic blocks and code execution paths. Check report here

Build

mkdir build && cd build
cmake -DLLVM_DIR=<path/to/llvm> ..
make

Running

Running the detector with instruction histogram based method:

./bin/ppa-detector --instruction-histogram <plaintiff>.bc <suspicious>.bc

Running the detector with sampling based dynamic analysis method:

./bin/ppa-detector --sebb <plaintiff>.bc <suspicious>.bc </path/to/input/folder> --relocation-model=pic