Enecuum C++ library for Elliptic Curve cryptography. Based on OpenSSL EC methods.
For now it contains realization of Algorithms 4-8 from Enecuum Blockchain TechPaper, and signature verification by formula 3.5.
- Big Numbers Arithmetic - operations with numbers of any size (based on OpenSSL BIGNUM structure and methods)
- Creating custom Elliptic Curve (EC)
- Operations with EC points
- Shamir's key sharing scheme
- Key recovery
- Signature and Verification by Weil Pairing algorithm
OpenSSL Binaries required.
Download OpenSSL for Linux:
sudo apt-get install libssl-dev
Build and run test example:
cd crypto
g++ *.cpp -lcrypto -o test
./test
Build .so library:
cd crypto
g++ -fPIC *.cpp -shared -o libecc.so
There is .sln solution for Visual Studo 2017.
First, download OpenSSL v1.1.1.
In project Properties set correct paths:
[C/C++ -> General -> Additional Include Directories]` : OpenSSL’s include directory (e.g C:\openssl\include)
[Linker -> General -> Additional Library Directories]` : OpenSSL’s lib directory (e.g C:\openssl\lib)
[Linker -> Input -> Additional Dependencies]` : libcrypto.lib
To build test app simply use main.cpp as example.
In case of error "No openssl_applink" go to [C/C++ -> Code generation -> Runtime library ] and set value as /MD
To build DLL setup project configuration for dll.
This addon allows you to call C++ methods of the library from NodeJS. Written with node-addon-api. Node.JS version 10+ required
cd node-addon
npm install
node index.js
This will download a pre-built files from another repo as npm-packet depends of your platform. If you have any issues with this way, you should build from sources.
Note. Make sure your NodeJS and libecc.so library have the same platform (x86, x64).
In file binding.gyp set absolute path to libecc.so. In Windows it is libecc.lib path
...
"libraries": [ "/home/user/lib-crypto/crypto/libecc.so" ]
...
In file node-bignumber.h set your path to crypto.h
#include "../lib-crypto/crypto.h"
Build and run test example:
cd node-addon/src
npm install
node ./addon.js