Errors Hidden Trapdoor is a public-key cryptosystem introduced with the manuscript New Public-Key Crypto-System EHT based on the well known LWE problem.
This repository contains a working proof-of-concept of EHT written in pure C with no external dependencies.
The code has been tested only on machines with Intel Core processors running Ubuntu/Linux Mint and GCC 9.3.0 as compiler. To build the repository, run the following
mkdir target
cd target
cmake ..
make
Run correctness tests
make test
To run the benchmark test for EHT-light-A, run the following
./test/EHT_light_A_bench_cycles
By default the memory is allocated both in heap and stack. One can choose the option of using only stack memory and achieve the best performances with the following
cmake -D FULL_STACK=ON ..
With the above, it may be required for some machines to increase the stack size available with ulimit -s 131070 to run EHT-medium-* and EHT-high-*.
We do not claim this code to be secure against side channel attacks and therefore it should not be used in production.
The code is released under the GNU General Public License version 3.
The function sample_error(...) in src/encrypt.c was taken and modified from a function in https://github.com/Microsoft/PQCrypto-LWEKE that is relased under the MIT Licence .
- Alessandro Budroni