Dory

This repo contains a POC implementation of Dory in our paper published in IEEE Security & Privacy 2026: Dory: Streaming PCG with Small Memory

It extends the emp-ot library.

Compiling

wget https://raw.githubusercontent.com/emp-toolkit/emp-readme/master/scripts/install.py
python install.py --install --tool
# Add `-DCMAKE_INSTALL_PREFIX=/PATH/TO/YOUR/LOCAL/DIR` to `cmake` if you need to install to a custom location
cmake .
make -j4

Run Experiments

We assemble experiments in the script run_dory.sh

# Run Alice
./run_dory.sh 1
# Run Bob
./run_dory.sh 2

If we just want to test a single case, the major command looks like:

./bin/test_dory [party] [port] [log(OT num)] [threads] [LPN param idx] [is malicious?]

For example, use port 12345, generate 2^20 OTs, use 8 threads, use LPN param 1, with malicious security:

# ALICE
./bin/test_dory 1 12345 20 8 1 1
# BOB
./bin/test_dory 2 12345 20 8 1 1