herumi / l2-to-l1

Conversion from L2 ciphertext to L1 by Re-Encryption protocol

Support architecture

• x86-64 Windows + Visual Studio
• x86, x86-64 Linux/macOS + gcc/clang

Installation Requirements

• GMP

apt install libgmp-dev

Create a working directory (e.g., work) and clone the following repositories.

mkdir work
cd work
git clone git://github.com/herumi/mcl
git clone git://github.com/herumi/l2-to-l1
cd l2-to-l1
make

How to use

usage:bootstrap [opt]
  -h show this message
  -ip : ip address
  -p : port
  -m : message
  -bitN : message space bit
  -save-sec : save secretKey

sample test

• server
  • ./bootstrap -bitN 8
• client
  • ./bootstrap -ip <server> -bitN 8

Reference

Arbitrary Univariate Function Evaluation and Re-Encryption Protocols over Lifted-ElGamal Type Ciphertexts, Koji Nuida and Satsuya Ohata and Shigeo Mitsunari and Nuttapong Attrapadung

Acknowledgements

Thanks to Masashi Horikoshi at Intel to provide Xeon SP environments to evaluate this protocol.

Author

光成滋生 MITSUNARI Shigeo([e-mail])